./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.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 3340815bef7e21ae2d4803d7059577c1761bb3b7b4bb24b2b34d5d0d0054fd10 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 00:47:53,629 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 00:47:53,699 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 00:47:53,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 00:47:53,707 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 00:47:53,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 00:47:53,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 00:47:53,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 00:47:53,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 00:47:53,747 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 00:47:53,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 00:47:53,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 00:47:53,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 00:47:53,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 00:47:53,751 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 00:47:53,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 00:47:53,752 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 00:47:53,752 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 00:47:53,752 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 00:47:53,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 00:47:53,753 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 00:47:53,756 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 00:47:53,757 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 00:47:53,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 00:47:53,757 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 00:47:53,757 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 00:47:53,757 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 00:47:53,758 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 00:47:53,758 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 00:47:53,758 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 00:47:53,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 00:47:53,759 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 00:47:53,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 00:47:53,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:47:53,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 00:47:53,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 00:47:53,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 00:47:53,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 00:47:53,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 00:47:53,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 00:47:53,763 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 00:47:53,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 00:47:53,764 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3340815bef7e21ae2d4803d7059577c1761bb3b7b4bb24b2b34d5d0d0054fd10 [2024-11-17 00:47:54,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 00:47:54,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 00:47:54,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 00:47:54,071 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 00:47:54,071 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 00:47:54,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i [2024-11-17 00:47:55,515 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 00:47:55,792 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 00:47:55,793 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i [2024-11-17 00:47:55,805 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c411281/304ed015c18547a7b6e4a712386b2663/FLAG4fe78bbeb [2024-11-17 00:47:55,817 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c411281/304ed015c18547a7b6e4a712386b2663 [2024-11-17 00:47:55,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 00:47:55,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 00:47:55,822 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 00:47:55,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 00:47:55,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 00:47:55,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:47:55" (1/1) ... [2024-11-17 00:47:55,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa45fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:55, skipping insertion in model container [2024-11-17 00:47:55,829 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:47:55" (1/1) ... [2024-11-17 00:47:55,874 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 00:47:56,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:47:56,215 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 00:47:56,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:47:56,283 INFO L204 MainTranslator]: Completed translation [2024-11-17 00:47:56,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56 WrapperNode [2024-11-17 00:47:56,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 00:47:56,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 00:47:56,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 00:47:56,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 00:47:56,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56" (1/1) ... [2024-11-17 00:47:56,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56" (1/1) ... [2024-11-17 00:47:56,337 INFO L138 Inliner]: procedures = 126, calls = 37, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 124 [2024-11-17 00:47:56,339 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 00:47:56,340 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 00:47:56,340 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 00:47:56,340 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 00:47:56,350 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56" (1/1) ... [2024-11-17 00:47:56,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56" (1/1) ... [2024-11-17 00:47:56,355 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56" (1/1) ... [2024-11-17 00:47:56,394 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 9, 9]. 45 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 6 writes are split as follows [0, 5, 1]. [2024-11-17 00:47:56,395 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56" (1/1) ... [2024-11-17 00:47:56,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56" (1/1) ... [2024-11-17 00:47:56,406 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56" (1/1) ... [2024-11-17 00:47:56,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56" (1/1) ... [2024-11-17 00:47:56,411 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56" (1/1) ... [2024-11-17 00:47:56,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56" (1/1) ... [2024-11-17 00:47:56,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 00:47:56,424 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 00:47:56,424 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 00:47:56,424 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 00:47:56,425 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56" (1/1) ... [2024-11-17 00:47:56,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:47:56,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:47:56,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 00:47:56,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 00:47:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 00:47:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 00:47:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 00:47:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-11-17 00:47:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-11-17 00:47:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 00:47:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 00:47:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 00:47:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 00:47:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 00:47:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-17 00:47:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 00:47:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-17 00:47:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-17 00:47:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 00:47:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-17 00:47:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-17 00:47:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-17 00:47:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 00:47:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 00:47:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 00:47:56,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 00:47:56,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 00:47:56,652 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 00:47:56,654 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 00:47:56,933 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L615: call ULTIMATE.dealloc(main_~#s~0#1.base, main_~#s~0#1.offset);havoc main_~#s~0#1.base, main_~#s~0#1.offset; [2024-11-17 00:47:56,960 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint myexit_returnLabel#1: assume true;havoc myexit_~s#1;havoc myexit_#in~s#1;assume { :end_inline_myexit } true; [2024-11-17 00:47:56,988 INFO L? ?]: Removed 102 outVars from TransFormulas that were not future-live. [2024-11-17 00:47:56,988 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 00:47:57,001 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 00:47:57,001 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 00:47:57,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:47:57 BoogieIcfgContainer [2024-11-17 00:47:57,002 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 00:47:57,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 00:47:57,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 00:47:57,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 00:47:57,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:47:55" (1/3) ... [2024-11-17 00:47:57,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b64cc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:47:57, skipping insertion in model container [2024-11-17 00:47:57,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:47:56" (2/3) ... [2024-11-17 00:47:57,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b64cc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:47:57, skipping insertion in model container [2024-11-17 00:47:57,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:47:57" (3/3) ... [2024-11-17 00:47:57,011 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_reverse.i [2024-11-17 00:47:57,034 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 00:47:57,035 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-11-17 00:47:57,088 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 00:47:57,097 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;@7696e4c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 00:47:57,098 INFO L334 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2024-11-17 00:47:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 103 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:47:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-17 00:47:57,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:47:57,111 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 00:47:57,111 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:47:57,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:47:57,118 INFO L85 PathProgramCache]: Analyzing trace with hash -94489962, now seen corresponding path program 1 times [2024-11-17 00:47:57,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:47:57,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856979844] [2024-11-17 00:47:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:47:57,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:47:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:47:57,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:47:57,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856979844] [2024-11-17 00:47:57,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856979844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:47:57,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:47:57,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:47:57,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129313013] [2024-11-17 00:47:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:47:57,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:47:57,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:47:57,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:47:57,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:47:57,406 INFO L87 Difference]: Start difference. First operand has 107 states, 61 states have (on average 1.8852459016393444) internal successors, (115), 103 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:47:57,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:47:57,506 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2024-11-17 00:47:57,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:47:57,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-17 00:47:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:47:57,516 INFO L225 Difference]: With dead ends: 104 [2024-11-17 00:47:57,516 INFO L226 Difference]: Without dead ends: 100 [2024-11-17 00:47:57,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:47:57,522 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 2 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:47:57,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 163 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:47:57,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-17 00:47:57,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-17 00:47:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 57 states have (on average 1.7719298245614035) internal successors, (101), 96 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:47:57,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2024-11-17 00:47:57,563 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 6 [2024-11-17 00:47:57,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:47:57,563 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2024-11-17 00:47:57,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:47:57,564 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2024-11-17 00:47:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-17 00:47:57,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:47:57,564 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 00:47:57,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 00:47:57,565 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:47:57,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:47:57,566 INFO L85 PathProgramCache]: Analyzing trace with hash -94489961, now seen corresponding path program 1 times [2024-11-17 00:47:57,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:47:57,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314089821] [2024-11-17 00:47:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:47:57,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:47:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:47:57,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:47:57,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314089821] [2024-11-17 00:47:57,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314089821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:47:57,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:47:57,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:47:57,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347926155] [2024-11-17 00:47:57,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:47:57,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:47:57,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:47:57,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:47:57,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:47:57,739 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:47:57,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:47:57,827 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2024-11-17 00:47:57,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:47:57,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-17 00:47:57,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:47:57,829 INFO L225 Difference]: With dead ends: 98 [2024-11-17 00:47:57,829 INFO L226 Difference]: Without dead ends: 98 [2024-11-17 00:47:57,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:47:57,830 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:47:57,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 165 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:47:57,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-17 00:47:57,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-17 00:47:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 57 states have (on average 1.736842105263158) internal successors, (99), 94 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:47:57,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2024-11-17 00:47:57,864 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 6 [2024-11-17 00:47:57,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:47:57,865 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2024-11-17 00:47:57,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:47:57,865 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2024-11-17 00:47:57,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-17 00:47:57,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:47:57,867 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:47:57,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 00:47:57,868 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:47:57,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:47:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2125398478, now seen corresponding path program 1 times [2024-11-17 00:47:57,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:47:57,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487861829] [2024-11-17 00:47:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:47:57,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:47:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:58,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:47:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:58,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:47:58,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:47:58,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487861829] [2024-11-17 00:47:58,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487861829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:47:58,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:47:58,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:47:58,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220340085] [2024-11-17 00:47:58,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:47:58,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:47:58,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:47:58,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:47:58,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:47:58,065 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:47:58,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:47:58,180 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2024-11-17 00:47:58,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:47:58,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 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 14 [2024-11-17 00:47:58,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:47:58,182 INFO L225 Difference]: With dead ends: 106 [2024-11-17 00:47:58,182 INFO L226 Difference]: Without dead ends: 106 [2024-11-17 00:47:58,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:47:58,183 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 5 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:47:58,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 236 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:47:58,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-17 00:47:58,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2024-11-17 00:47:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 96 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:47:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2024-11-17 00:47:58,194 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 14 [2024-11-17 00:47:58,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:47:58,195 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2024-11-17 00:47:58,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:47:58,195 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2024-11-17 00:47:58,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-17 00:47:58,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:47:58,196 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:47:58,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 00:47:58,196 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:47:58,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:47:58,197 INFO L85 PathProgramCache]: Analyzing trace with hash 2080692714, now seen corresponding path program 1 times [2024-11-17 00:47:58,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:47:58,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071644237] [2024-11-17 00:47:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:47:58,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:47:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:58,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:47:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:58,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:47:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:47:58,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:47:58,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071644237] [2024-11-17 00:47:58,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071644237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:47:58,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:47:58,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 00:47:58,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9267652] [2024-11-17 00:47:58,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:47:58,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:47:58,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:47:58,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:47:58,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:47:58,370 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:47:58,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:47:58,578 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2024-11-17 00:47:58,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:47:58,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-17 00:47:58,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:47:58,582 INFO L225 Difference]: With dead ends: 99 [2024-11-17 00:47:58,582 INFO L226 Difference]: Without dead ends: 99 [2024-11-17 00:47:58,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:47:58,583 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 2 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:47:58,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 339 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:47:58,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-17 00:47:58,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-17 00:47:58,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 59 states have (on average 1.694915254237288) internal successors, (100), 95 states have internal predecessors, (100), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:47:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2024-11-17 00:47:58,595 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 23 [2024-11-17 00:47:58,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:47:58,596 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2024-11-17 00:47:58,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:47:58,596 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2024-11-17 00:47:58,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-17 00:47:58,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:47:58,597 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:47:58,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 00:47:58,597 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:47:58,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:47:58,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2080692715, now seen corresponding path program 1 times [2024-11-17 00:47:58,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:47:58,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580623463] [2024-11-17 00:47:58,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:47:58,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:47:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:58,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:47:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:58,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:47:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:47:58,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:47:58,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580623463] [2024-11-17 00:47:58,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580623463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:47:58,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:47:58,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 00:47:58,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628929003] [2024-11-17 00:47:58,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:47:58,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:47:58,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:47:58,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:47:58,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:47:58,947 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:47:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:47:59,114 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2024-11-17 00:47:59,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:47:59,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-17 00:47:59,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:47:59,115 INFO L225 Difference]: With dead ends: 98 [2024-11-17 00:47:59,116 INFO L226 Difference]: Without dead ends: 98 [2024-11-17 00:47:59,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:47:59,119 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 1 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:47:59,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 371 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:47:59,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-17 00:47:59,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-17 00:47:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 59 states have (on average 1.6779661016949152) internal successors, (99), 94 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:47:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2024-11-17 00:47:59,130 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 23 [2024-11-17 00:47:59,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:47:59,130 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2024-11-17 00:47:59,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:47:59,131 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2024-11-17 00:47:59,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-17 00:47:59,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:47:59,132 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:47:59,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 00:47:59,132 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:47:59,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:47:59,133 INFO L85 PathProgramCache]: Analyzing trace with hash -655205143, now seen corresponding path program 1 times [2024-11-17 00:47:59,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:47:59,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875471364] [2024-11-17 00:47:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:47:59,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:47:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:59,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:47:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:59,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:47:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:47:59,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:47:59,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875471364] [2024-11-17 00:47:59,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875471364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:47:59,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101217179] [2024-11-17 00:47:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:47:59,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:47:59,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:47:59,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:47:59,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 00:47:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:47:59,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-17 00:47:59,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:47:59,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 00:47:59,673 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2024-11-17 00:47:59,760 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-17 00:47:59,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-17 00:47:59,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2024-11-17 00:47:59,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:47:59,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101217179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:47:59,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:47:59,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2024-11-17 00:47:59,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149208109] [2024-11-17 00:47:59,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:47:59,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:47:59,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:47:59,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:47:59,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2024-11-17 00:47:59,896 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:48:00,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:00,177 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2024-11-17 00:48:00,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:48:00,178 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2024-11-17 00:48:00,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:00,179 INFO L225 Difference]: With dead ends: 97 [2024-11-17 00:48:00,179 INFO L226 Difference]: Without dead ends: 97 [2024-11-17 00:48:00,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=124, Unknown=1, NotChecked=22, Total=182 [2024-11-17 00:48:00,181 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:00,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 342 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 94 Unchecked, 0.2s Time] [2024-11-17 00:48:00,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-17 00:48:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-17 00:48:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 93 states have internal predecessors, (98), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2024-11-17 00:48:00,194 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 27 [2024-11-17 00:48:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:00,194 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2024-11-17 00:48:00,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:48:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2024-11-17 00:48:00,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-17 00:48:00,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:00,196 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:00,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 00:48:00,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-17 00:48:00,397 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:00,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:00,398 INFO L85 PathProgramCache]: Analyzing trace with hash -655205142, now seen corresponding path program 1 times [2024-11-17 00:48:00,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:00,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179555095] [2024-11-17 00:48:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:00,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:00,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:00,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:48:00,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:00,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179555095] [2024-11-17 00:48:00,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179555095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:00,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080253977] [2024-11-17 00:48:00,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:00,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:00,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:00,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:00,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 00:48:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:00,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-17 00:48:00,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:01,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 00:48:01,208 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-17 00:48:01,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-17 00:48:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:48:01,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:48:01,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080253977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:01,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:48:01,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2024-11-17 00:48:01,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391939637] [2024-11-17 00:48:01,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:48:01,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 00:48:01,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:01,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 00:48:01,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-17 00:48:01,421 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 13 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-17 00:48:01,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:01,995 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2024-11-17 00:48:01,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:48:01,996 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 13 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2024-11-17 00:48:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:02,001 INFO L225 Difference]: With dead ends: 98 [2024-11-17 00:48:02,001 INFO L226 Difference]: Without dead ends: 98 [2024-11-17 00:48:02,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-11-17 00:48:02,003 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 4 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:02,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 768 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 00:48:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-17 00:48:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2024-11-17 00:48:02,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 59 states have (on average 1.6440677966101696) internal successors, (97), 92 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2024-11-17 00:48:02,016 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 27 [2024-11-17 00:48:02,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:02,016 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2024-11-17 00:48:02,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 13 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-17 00:48:02,017 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2024-11-17 00:48:02,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-17 00:48:02,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:02,018 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:02,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 00:48:02,218 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,SelfDestructingSolverStorable6 [2024-11-17 00:48:02,219 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:02,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:02,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2104611792, now seen corresponding path program 1 times [2024-11-17 00:48:02,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:02,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952524452] [2024-11-17 00:48:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:02,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:02,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:02,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:02,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:02,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952524452] [2024-11-17 00:48:02,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952524452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:02,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:48:02,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 00:48:02,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115844682] [2024-11-17 00:48:02,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:02,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:48:02,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:02,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:48:02,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:48:02,338 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:02,433 INFO L93 Difference]: Finished difference Result 159 states and 167 transitions. [2024-11-17 00:48:02,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:48:02,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-11-17 00:48:02,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:02,435 INFO L225 Difference]: With dead ends: 159 [2024-11-17 00:48:02,435 INFO L226 Difference]: Without dead ends: 159 [2024-11-17 00:48:02,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:48:02,438 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 195 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:02,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 226 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:48:02,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-17 00:48:02,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 98. [2024-11-17 00:48:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 61 states have (on average 1.6229508196721312) internal successors, (99), 94 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2024-11-17 00:48:02,450 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 32 [2024-11-17 00:48:02,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:02,451 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2024-11-17 00:48:02,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:02,451 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2024-11-17 00:48:02,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-17 00:48:02,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:02,452 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:02,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 00:48:02,453 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:02,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:02,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2104611920, now seen corresponding path program 1 times [2024-11-17 00:48:02,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:02,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458623610] [2024-11-17 00:48:02,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:02,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:02,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:02,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:02,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:02,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458623610] [2024-11-17 00:48:02,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458623610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:02,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:48:02,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 00:48:02,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647400833] [2024-11-17 00:48:02,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:02,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:48:02,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:02,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:48:02,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:48:02,746 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:02,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:02,912 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2024-11-17 00:48:02,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:48:02,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-11-17 00:48:02,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:02,913 INFO L225 Difference]: With dead ends: 139 [2024-11-17 00:48:02,913 INFO L226 Difference]: Without dead ends: 139 [2024-11-17 00:48:02,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:48:02,914 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 132 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:02,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 157 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:48:02,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-17 00:48:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 95. [2024-11-17 00:48:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 62 states have (on average 1.564516129032258) internal successors, (97), 91 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2024-11-17 00:48:02,922 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 32 [2024-11-17 00:48:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:02,923 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2024-11-17 00:48:02,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:02,923 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2024-11-17 00:48:02,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-17 00:48:02,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:02,924 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:02,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 00:48:02,925 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:02,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:02,926 INFO L85 PathProgramCache]: Analyzing trace with hash 2104611921, now seen corresponding path program 1 times [2024-11-17 00:48:02,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:02,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266556147] [2024-11-17 00:48:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:02,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:03,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:03,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:03,324 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 00:48:03,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:03,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266556147] [2024-11-17 00:48:03,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266556147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:03,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20352368] [2024-11-17 00:48:03,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:03,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:03,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:03,327 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:03,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 00:48:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:03,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-17 00:48:03,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:03,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 00:48:03,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-17 00:48:03,490 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|))) is different from true [2024-11-17 00:48:03,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:48:03,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-17 00:48:03,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-17 00:48:03,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:48:03,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-17 00:48:03,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 00:48:03,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:48:03,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20352368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:03,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:48:03,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2024-11-17 00:48:03,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69094560] [2024-11-17 00:48:03,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:48:03,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:48:03,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:03,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:48:03,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=120, Unknown=1, NotChecked=22, Total=182 [2024-11-17 00:48:03,807 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand has 11 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 00:48:04,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:04,018 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2024-11-17 00:48:04,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:48:04,019 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-11-17 00:48:04,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:04,020 INFO L225 Difference]: With dead ends: 87 [2024-11-17 00:48:04,020 INFO L226 Difference]: Without dead ends: 87 [2024-11-17 00:48:04,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=138, Unknown=1, NotChecked=24, Total=210 [2024-11-17 00:48:04,021 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 161 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:04,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 183 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 207 Invalid, 0 Unknown, 81 Unchecked, 0.2s Time] [2024-11-17 00:48:04,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-17 00:48:04,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-17 00:48:04,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 83 states have internal predecessors, (88), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:04,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2024-11-17 00:48:04,024 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 32 [2024-11-17 00:48:04,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:04,024 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 92 transitions. [2024-11-17 00:48:04,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 00:48:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 92 transitions. [2024-11-17 00:48:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-17 00:48:04,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:04,025 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:04,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 00:48:04,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:04,226 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:04,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:04,227 INFO L85 PathProgramCache]: Analyzing trace with hash 561174275, now seen corresponding path program 1 times [2024-11-17 00:48:04,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:04,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100371897] [2024-11-17 00:48:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:04,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:04,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:04,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:48:04,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:04,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100371897] [2024-11-17 00:48:04,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100371897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:04,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:48:04,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-17 00:48:04,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918443959] [2024-11-17 00:48:04,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:04,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 00:48:04,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:04,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 00:48:04,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-17 00:48:04,621 INFO L87 Difference]: Start difference. First operand 87 states and 92 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:05,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:05,098 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2024-11-17 00:48:05,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 00:48:05,099 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2024-11-17 00:48:05,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:05,100 INFO L225 Difference]: With dead ends: 160 [2024-11-17 00:48:05,100 INFO L226 Difference]: Without dead ends: 160 [2024-11-17 00:48:05,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-17 00:48:05,101 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 166 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:05,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 605 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:48:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-17 00:48:05,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 129. [2024-11-17 00:48:05,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 104 states have (on average 1.5192307692307692) internal successors, (158), 125 states have internal predecessors, (158), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 162 transitions. [2024-11-17 00:48:05,106 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 162 transitions. Word has length 35 [2024-11-17 00:48:05,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:05,106 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 162 transitions. [2024-11-17 00:48:05,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 162 transitions. [2024-11-17 00:48:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-17 00:48:05,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:05,107 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:05,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 00:48:05,108 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:05,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:05,108 INFO L85 PathProgramCache]: Analyzing trace with hash 561174274, now seen corresponding path program 1 times [2024-11-17 00:48:05,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:05,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675525492] [2024-11-17 00:48:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:05,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:05,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:48:05,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675525492] [2024-11-17 00:48:05,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675525492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:05,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:48:05,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-17 00:48:05,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018792940] [2024-11-17 00:48:05,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:05,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 00:48:05,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:05,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 00:48:05,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:48:05,320 INFO L87 Difference]: Start difference. First operand 129 states and 162 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:05,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:05,691 INFO L93 Difference]: Finished difference Result 180 states and 221 transitions. [2024-11-17 00:48:05,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 00:48:05,692 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2024-11-17 00:48:05,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:05,693 INFO L225 Difference]: With dead ends: 180 [2024-11-17 00:48:05,693 INFO L226 Difference]: Without dead ends: 180 [2024-11-17 00:48:05,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-17 00:48:05,694 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 128 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:05,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 414 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 00:48:05,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-17 00:48:05,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 130. [2024-11-17 00:48:05,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 107 states have (on average 1.4579439252336448) internal successors, (156), 126 states have internal predecessors, (156), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:05,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 160 transitions. [2024-11-17 00:48:05,698 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 160 transitions. Word has length 35 [2024-11-17 00:48:05,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:05,698 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 160 transitions. [2024-11-17 00:48:05,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:05,698 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 160 transitions. [2024-11-17 00:48:05,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-17 00:48:05,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:05,699 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:05,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 00:48:05,699 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:05,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:05,700 INFO L85 PathProgramCache]: Analyzing trace with hash -658865025, now seen corresponding path program 1 times [2024-11-17 00:48:05,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:05,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426974289] [2024-11-17 00:48:05,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:05,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:05,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:05,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:05,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:48:05,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:05,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426974289] [2024-11-17 00:48:05,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426974289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:05,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:48:05,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-17 00:48:05,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894657860] [2024-11-17 00:48:05,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:05,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 00:48:05,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:05,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 00:48:05,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:48:05,935 INFO L87 Difference]: Start difference. First operand 130 states and 160 transitions. Second operand has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:06,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:06,149 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2024-11-17 00:48:06,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 00:48:06,149 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2024-11-17 00:48:06,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:06,150 INFO L225 Difference]: With dead ends: 132 [2024-11-17 00:48:06,150 INFO L226 Difference]: Without dead ends: 132 [2024-11-17 00:48:06,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-17 00:48:06,151 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 85 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:06,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 575 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:48:06,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-17 00:48:06,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2024-11-17 00:48:06,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 107 states have (on average 1.4485981308411215) internal successors, (155), 125 states have internal predecessors, (155), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:06,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 159 transitions. [2024-11-17 00:48:06,155 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 159 transitions. Word has length 41 [2024-11-17 00:48:06,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:06,155 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 159 transitions. [2024-11-17 00:48:06,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:06,155 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 159 transitions. [2024-11-17 00:48:06,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-17 00:48:06,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:06,156 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:06,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 00:48:06,157 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:06,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:06,157 INFO L85 PathProgramCache]: Analyzing trace with hash -657788098, now seen corresponding path program 1 times [2024-11-17 00:48:06,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:06,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018846836] [2024-11-17 00:48:06,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:06,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:06,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:06,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:48:07,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:07,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018846836] [2024-11-17 00:48:07,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018846836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:07,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677577370] [2024-11-17 00:48:07,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:07,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:07,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:07,147 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:07,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 00:48:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:07,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-17 00:48:07,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:07,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 00:48:07,674 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:48:07,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:48:07,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:48:07,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:48:07,973 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-17 00:48:07,973 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 50 treesize of output 45 [2024-11-17 00:48:07,979 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 24 treesize of output 11 [2024-11-17 00:48:08,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 28 [2024-11-17 00:48:08,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-17 00:48:08,522 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 7 treesize of output 3 [2024-11-17 00:48:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:48:08,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:48:09,053 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 56 treesize of output 40 [2024-11-17 00:48:09,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 31 [2024-11-17 00:48:09,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:48:09,190 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 40 treesize of output 44 [2024-11-17 00:48:09,418 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:48:09,418 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-17 00:48:09,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2024-11-17 00:48:09,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-17 00:48:09,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:48:09,435 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-17 00:48:09,440 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:48:09,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-17 00:48:09,454 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:48:09,454 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2024-11-17 00:48:09,458 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:48:09,460 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 18 treesize of output 10 [2024-11-17 00:48:09,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677577370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:09,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:48:09,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2024-11-17 00:48:09,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671061568] [2024-11-17 00:48:09,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:48:09,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-17 00:48:09,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:09,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-17 00:48:09,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=3148, Unknown=1, NotChecked=0, Total=3306 [2024-11-17 00:48:09,712 INFO L87 Difference]: Start difference. First operand 129 states and 159 transitions. Second operand has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 38 states have internal predecessors, (73), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:48:11,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:11,672 INFO L93 Difference]: Finished difference Result 224 states and 267 transitions. [2024-11-17 00:48:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-17 00:48:11,673 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 38 states have internal predecessors, (73), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 41 [2024-11-17 00:48:11,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:11,674 INFO L225 Difference]: With dead ends: 224 [2024-11-17 00:48:11,674 INFO L226 Difference]: Without dead ends: 224 [2024-11-17 00:48:11,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=315, Invalid=5234, Unknown=1, NotChecked=0, Total=5550 [2024-11-17 00:48:11,677 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 606 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:11,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 1539 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-17 00:48:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-17 00:48:11,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 148. [2024-11-17 00:48:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 125 states have (on average 1.4) internal successors, (175), 143 states have internal predecessors, (175), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:48:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 181 transitions. [2024-11-17 00:48:11,682 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 181 transitions. Word has length 41 [2024-11-17 00:48:11,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:11,682 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 181 transitions. [2024-11-17 00:48:11,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 38 states have internal predecessors, (73), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:48:11,683 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 181 transitions. [2024-11-17 00:48:11,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-17 00:48:11,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:11,684 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:11,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 00:48:11,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:11,884 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:11,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:11,885 INFO L85 PathProgramCache]: Analyzing trace with hash -657788099, now seen corresponding path program 1 times [2024-11-17 00:48:11,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:11,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404822994] [2024-11-17 00:48:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:11,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:12,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:12,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:48:12,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:12,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404822994] [2024-11-17 00:48:12,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404822994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:12,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29062113] [2024-11-17 00:48:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:12,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:12,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:12,427 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:12,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 00:48:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:12,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-17 00:48:12,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:12,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 00:48:12,770 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:48:12,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:48:12,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:48:12,933 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-17 00:48:12,933 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 34 treesize of output 33 [2024-11-17 00:48:13,120 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 45 treesize of output 29 [2024-11-17 00:48:13,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-17 00:48:13,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-17 00:48:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:48:13,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:48:13,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2024-11-17 00:48:13,253 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 14 [2024-11-17 00:48:13,267 INFO L349 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2024-11-17 00:48:13,267 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 19 treesize of output 18 [2024-11-17 00:48:13,272 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1065 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1065) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) is different from false [2024-11-17 00:48:13,283 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1065 (Array Int Int))) (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1065) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) is different from false [2024-11-17 00:48:13,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:48:13,290 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-17 00:48:13,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2024-11-17 00:48:13,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-17 00:48:13,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29062113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:13,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:48:13,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 34 [2024-11-17 00:48:13,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874401631] [2024-11-17 00:48:13,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:48:13,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-17 00:48:13,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:13,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-17 00:48:13,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1169, Unknown=2, NotChecked=138, Total=1406 [2024-11-17 00:48:13,379 INFO L87 Difference]: Start difference. First operand 148 states and 181 transitions. Second operand has 35 states, 33 states have (on average 1.878787878787879) internal successors, (62), 29 states have internal predecessors, (62), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:48:14,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:14,162 INFO L93 Difference]: Finished difference Result 213 states and 259 transitions. [2024-11-17 00:48:14,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-17 00:48:14,163 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 1.878787878787879) internal successors, (62), 29 states have internal predecessors, (62), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 41 [2024-11-17 00:48:14,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:14,164 INFO L225 Difference]: With dead ends: 213 [2024-11-17 00:48:14,164 INFO L226 Difference]: Without dead ends: 213 [2024-11-17 00:48:14,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=1817, Unknown=2, NotChecked=174, Total=2162 [2024-11-17 00:48:14,165 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 462 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:14,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 880 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-17 00:48:14,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-17 00:48:14,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 148. [2024-11-17 00:48:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 125 states have (on average 1.4) internal successors, (175), 143 states have internal predecessors, (175), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:48:14,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 181 transitions. [2024-11-17 00:48:14,170 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 181 transitions. Word has length 41 [2024-11-17 00:48:14,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:14,170 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 181 transitions. [2024-11-17 00:48:14,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 1.878787878787879) internal successors, (62), 29 states have internal predecessors, (62), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:48:14,171 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 181 transitions. [2024-11-17 00:48:14,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-17 00:48:14,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:14,172 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:14,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 00:48:14,375 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,SelfDestructingSolverStorable14 [2024-11-17 00:48:14,376 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:14,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1050020703, now seen corresponding path program 1 times [2024-11-17 00:48:14,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:14,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685373150] [2024-11-17 00:48:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:14,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:14,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:14,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:48:14,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:14,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685373150] [2024-11-17 00:48:14,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685373150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:14,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:48:14,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-17 00:48:14,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785527587] [2024-11-17 00:48:14,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:14,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 00:48:14,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:14,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 00:48:14,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:48:14,627 INFO L87 Difference]: Start difference. First operand 148 states and 181 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:14,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:14,893 INFO L93 Difference]: Finished difference Result 170 states and 191 transitions. [2024-11-17 00:48:14,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 00:48:14,893 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2024-11-17 00:48:14,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:14,894 INFO L225 Difference]: With dead ends: 170 [2024-11-17 00:48:14,894 INFO L226 Difference]: Without dead ends: 170 [2024-11-17 00:48:14,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-17 00:48:14,895 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 86 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:14,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 588 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:48:14,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-17 00:48:14,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 151. [2024-11-17 00:48:14,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 128 states have (on average 1.390625) internal successors, (178), 146 states have internal predecessors, (178), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:48:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 184 transitions. [2024-11-17 00:48:14,899 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 184 transitions. Word has length 42 [2024-11-17 00:48:14,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:14,900 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 184 transitions. [2024-11-17 00:48:14,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:14,900 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 184 transitions. [2024-11-17 00:48:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-17 00:48:14,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:14,901 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:14,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 00:48:14,901 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:14,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:14,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1780466437, now seen corresponding path program 1 times [2024-11-17 00:48:14,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:14,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809419788] [2024-11-17 00:48:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:14,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:14,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:15,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:15,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809419788] [2024-11-17 00:48:15,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809419788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:15,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:48:15,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 00:48:15,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688807531] [2024-11-17 00:48:15,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:15,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 00:48:15,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:15,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 00:48:15,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:48:15,006 INFO L87 Difference]: Start difference. First operand 151 states and 184 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:15,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:15,121 INFO L93 Difference]: Finished difference Result 165 states and 203 transitions. [2024-11-17 00:48:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 00:48:15,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2024-11-17 00:48:15,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:15,123 INFO L225 Difference]: With dead ends: 165 [2024-11-17 00:48:15,123 INFO L226 Difference]: Without dead ends: 165 [2024-11-17 00:48:15,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:48:15,124 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 2 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:15,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 296 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:48:15,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-17 00:48:15,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2024-11-17 00:48:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 140 states have (on average 1.3857142857142857) internal successors, (194), 158 states have internal predecessors, (194), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:48:15,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 200 transitions. [2024-11-17 00:48:15,128 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 200 transitions. Word has length 43 [2024-11-17 00:48:15,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:15,129 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 200 transitions. [2024-11-17 00:48:15,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:15,129 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 200 transitions. [2024-11-17 00:48:15,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-17 00:48:15,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:15,129 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:15,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 00:48:15,130 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:15,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:15,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1809096579, now seen corresponding path program 1 times [2024-11-17 00:48:15,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:15,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443628997] [2024-11-17 00:48:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:15,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:15,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:15,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:15,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:15,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443628997] [2024-11-17 00:48:15,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443628997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:15,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:48:15,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 00:48:15,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042730400] [2024-11-17 00:48:15,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:15,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 00:48:15,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:15,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 00:48:15,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:48:15,230 INFO L87 Difference]: Start difference. First operand 163 states and 200 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:15,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:15,385 INFO L93 Difference]: Finished difference Result 166 states and 202 transitions. [2024-11-17 00:48:15,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:48:15,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2024-11-17 00:48:15,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:15,387 INFO L225 Difference]: With dead ends: 166 [2024-11-17 00:48:15,388 INFO L226 Difference]: Without dead ends: 166 [2024-11-17 00:48:15,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:48:15,389 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 38 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:15,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 304 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:48:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-17 00:48:15,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2024-11-17 00:48:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 140 states have (on average 1.3785714285714286) internal successors, (193), 157 states have internal predecessors, (193), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:48:15,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 199 transitions. [2024-11-17 00:48:15,397 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 199 transitions. Word has length 43 [2024-11-17 00:48:15,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:15,397 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 199 transitions. [2024-11-17 00:48:15,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:15,398 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 199 transitions. [2024-11-17 00:48:15,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-17 00:48:15,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:15,398 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:15,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-17 00:48:15,400 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:15,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:15,400 INFO L85 PathProgramCache]: Analyzing trace with hash 919942298, now seen corresponding path program 1 times [2024-11-17 00:48:15,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:15,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541332293] [2024-11-17 00:48:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:15,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:15,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:15,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:48:15,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:15,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541332293] [2024-11-17 00:48:15,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541332293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:15,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21887837] [2024-11-17 00:48:15,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:15,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:15,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:15,728 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:15,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 00:48:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:15,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 00:48:15,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:16,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:48:16,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-17 00:48:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:16,013 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:48:16,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21887837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:16,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:48:16,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 17 [2024-11-17 00:48:16,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318915067] [2024-11-17 00:48:16,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:16,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:48:16,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:16,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:48:16,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-17 00:48:16,014 INFO L87 Difference]: Start difference. First operand 162 states and 199 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:16,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:16,124 INFO L93 Difference]: Finished difference Result 161 states and 198 transitions. [2024-11-17 00:48:16,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 00:48:16,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2024-11-17 00:48:16,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:16,125 INFO L225 Difference]: With dead ends: 161 [2024-11-17 00:48:16,125 INFO L226 Difference]: Without dead ends: 161 [2024-11-17 00:48:16,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2024-11-17 00:48:16,126 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 111 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:16,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 151 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:48:16,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-17 00:48:16,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-17 00:48:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 140 states have (on average 1.3714285714285714) internal successors, (192), 156 states have internal predecessors, (192), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:48:16,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 198 transitions. [2024-11-17 00:48:16,131 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 198 transitions. Word has length 45 [2024-11-17 00:48:16,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:16,132 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 198 transitions. [2024-11-17 00:48:16,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:16,132 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 198 transitions. [2024-11-17 00:48:16,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-17 00:48:16,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:16,133 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:16,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 00:48:16,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:16,334 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:16,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash 229488441, now seen corresponding path program 2 times [2024-11-17 00:48:16,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:16,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593787953] [2024-11-17 00:48:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:16,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:17,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:17,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:48:17,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:17,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593787953] [2024-11-17 00:48:17,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593787953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:17,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899348063] [2024-11-17 00:48:17,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:48:17,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:17,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:17,144 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:17,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 00:48:17,331 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:48:17,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:48:17,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-17 00:48:17,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:17,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 00:48:17,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 00:48:17,666 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:48:17,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:48:17,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:48:17,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:48:17,892 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-17 00:48:17,892 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 47 treesize of output 33 [2024-11-17 00:48:17,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2024-11-17 00:48:18,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-17 00:48:18,551 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 82 treesize of output 50 [2024-11-17 00:48:18,662 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-17 00:48:18,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 21 [2024-11-17 00:48:18,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 00:48:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:48:18,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:48:19,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 76 [2024-11-17 00:48:19,135 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 80 treesize of output 52 [2024-11-17 00:48:19,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:48:19,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2050 treesize of output 1930 [2024-11-17 00:48:19,491 INFO L349 Elim1Store]: treesize reduction 11, result has 60.7 percent of original size [2024-11-17 00:48:19,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3374 treesize of output 3294 [2024-11-17 00:48:21,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:48:21,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 964 treesize of output 844 [2024-11-17 00:48:21,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899348063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:21,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:48:21,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25] total 47 [2024-11-17 00:48:21,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396726089] [2024-11-17 00:48:21,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:48:21,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-17 00:48:21,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:21,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-17 00:48:21,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3600, Unknown=0, NotChecked=0, Total=3782 [2024-11-17 00:48:21,972 INFO L87 Difference]: Start difference. First operand 161 states and 198 transitions. Second operand has 47 states, 46 states have (on average 1.8478260869565217) internal successors, (85), 41 states have internal predecessors, (85), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:48:23,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:23,311 INFO L93 Difference]: Finished difference Result 183 states and 216 transitions. [2024-11-17 00:48:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-17 00:48:23,311 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.8478260869565217) internal successors, (85), 41 states have internal predecessors, (85), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 47 [2024-11-17 00:48:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:23,312 INFO L225 Difference]: With dead ends: 183 [2024-11-17 00:48:23,312 INFO L226 Difference]: Without dead ends: 183 [2024-11-17 00:48:23,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=293, Invalid=4677, Unknown=0, NotChecked=0, Total=4970 [2024-11-17 00:48:23,314 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 279 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:23,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1445 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-17 00:48:23,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-17 00:48:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 161. [2024-11-17 00:48:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 140 states have (on average 1.3642857142857143) internal successors, (191), 156 states have internal predecessors, (191), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:48:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 197 transitions. [2024-11-17 00:48:23,318 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 197 transitions. Word has length 47 [2024-11-17 00:48:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:23,319 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 197 transitions. [2024-11-17 00:48:23,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.8478260869565217) internal successors, (85), 41 states have internal predecessors, (85), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:48:23,319 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 197 transitions. [2024-11-17 00:48:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-17 00:48:23,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:23,319 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:23,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 00:48:23,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:23,520 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:23,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:23,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1450038214, now seen corresponding path program 1 times [2024-11-17 00:48:23,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:23,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251277997] [2024-11-17 00:48:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:23,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:23,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:23,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:23,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:23,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251277997] [2024-11-17 00:48:23,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251277997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:23,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:48:23,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:48:23,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444794336] [2024-11-17 00:48:23,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:23,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:48:23,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:23,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:48:23,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:48:23,595 INFO L87 Difference]: Start difference. First operand 161 states and 197 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:23,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:23,676 INFO L93 Difference]: Finished difference Result 159 states and 194 transitions. [2024-11-17 00:48:23,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 00:48:23,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2024-11-17 00:48:23,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:23,677 INFO L225 Difference]: With dead ends: 159 [2024-11-17 00:48:23,678 INFO L226 Difference]: Without dead ends: 159 [2024-11-17 00:48:23,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:48:23,679 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 72 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:23,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 143 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:48:23,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-17 00:48:23,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-17 00:48:23,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 140 states have (on average 1.3428571428571427) internal successors, (188), 154 states have internal predecessors, (188), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:48:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 194 transitions. [2024-11-17 00:48:23,682 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 194 transitions. Word has length 49 [2024-11-17 00:48:23,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:23,682 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 194 transitions. [2024-11-17 00:48:23,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:23,683 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 194 transitions. [2024-11-17 00:48:23,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-17 00:48:23,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:23,683 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:23,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-17 00:48:23,684 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:23,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash 488762934, now seen corresponding path program 1 times [2024-11-17 00:48:23,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:23,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189313611] [2024-11-17 00:48:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:23,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:23,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:23,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:23,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:23,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189313611] [2024-11-17 00:48:23,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189313611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:23,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049145749] [2024-11-17 00:48:23,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:23,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:23,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:23,800 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:23,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 00:48:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:24,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-17 00:48:24,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:24,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 00:48:24,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-17 00:48:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 00:48:24,215 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:48:24,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049145749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:24,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:48:24,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 17 [2024-11-17 00:48:24,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406854358] [2024-11-17 00:48:24,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:24,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 00:48:24,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:24,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 00:48:24,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-11-17 00:48:24,218 INFO L87 Difference]: Start difference. First operand 159 states and 194 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:24,496 INFO L93 Difference]: Finished difference Result 199 states and 238 transitions. [2024-11-17 00:48:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 00:48:24,496 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2024-11-17 00:48:24,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:24,497 INFO L225 Difference]: With dead ends: 199 [2024-11-17 00:48:24,497 INFO L226 Difference]: Without dead ends: 199 [2024-11-17 00:48:24,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-17 00:48:24,498 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 132 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:24,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 469 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:48:24,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-17 00:48:24,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 175. [2024-11-17 00:48:24,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 157 states have (on average 1.3375796178343948) internal successors, (210), 170 states have internal predecessors, (210), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:48:24,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 216 transitions. [2024-11-17 00:48:24,502 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 216 transitions. Word has length 49 [2024-11-17 00:48:24,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:24,502 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 216 transitions. [2024-11-17 00:48:24,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:24,503 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 216 transitions. [2024-11-17 00:48:24,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-17 00:48:24,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:24,503 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:24,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 00:48:24,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-17 00:48:24,704 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:24,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:24,704 INFO L85 PathProgramCache]: Analyzing trace with hash 488762935, now seen corresponding path program 1 times [2024-11-17 00:48:24,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:24,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590476245] [2024-11-17 00:48:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:24,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:25,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:25,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:48:25,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:25,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590476245] [2024-11-17 00:48:25,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590476245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:25,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100725199] [2024-11-17 00:48:25,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:25,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:25,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:25,128 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:25,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 00:48:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:25,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-17 00:48:25,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:25,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 00:48:25,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-17 00:48:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:48:25,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:48:26,184 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 24 treesize of output 16 [2024-11-17 00:48:26,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-17 00:48:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:48:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100725199] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:26,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:48:26,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 15] total 41 [2024-11-17 00:48:26,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453180343] [2024-11-17 00:48:26,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:26,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 00:48:26,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:26,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 00:48:26,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2024-11-17 00:48:26,441 INFO L87 Difference]: Start difference. First operand 175 states and 216 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:26,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:26,912 INFO L93 Difference]: Finished difference Result 189 states and 216 transitions. [2024-11-17 00:48:26,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 00:48:26,912 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2024-11-17 00:48:26,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:26,913 INFO L225 Difference]: With dead ends: 189 [2024-11-17 00:48:26,913 INFO L226 Difference]: Without dead ends: 189 [2024-11-17 00:48:26,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=192, Invalid=2160, Unknown=0, NotChecked=0, Total=2352 [2024-11-17 00:48:26,915 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 99 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:26,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 647 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 00:48:26,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-17 00:48:26,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 175. [2024-11-17 00:48:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 159 states have (on average 1.2955974842767295) internal successors, (206), 170 states have internal predecessors, (206), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:48:26,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 212 transitions. [2024-11-17 00:48:26,920 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 212 transitions. Word has length 49 [2024-11-17 00:48:26,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:26,921 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 212 transitions. [2024-11-17 00:48:26,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:26,921 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 212 transitions. [2024-11-17 00:48:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-17 00:48:26,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:26,922 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:26,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 00:48:27,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:27,126 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:27,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash 692616535, now seen corresponding path program 1 times [2024-11-17 00:48:27,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:27,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911606483] [2024-11-17 00:48:27,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:27,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:27,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:27,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:27,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:27,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911606483] [2024-11-17 00:48:27,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911606483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:27,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322029729] [2024-11-17 00:48:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:27,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:27,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:27,229 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:27,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 00:48:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:27,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 00:48:27,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:27,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:48:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:27,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322029729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:48:27,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:48:27,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-17 00:48:27,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792441686] [2024-11-17 00:48:27,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:48:27,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:48:27,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:27,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:48:27,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:48:27,582 INFO L87 Difference]: Start difference. First operand 175 states and 212 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 00:48:27,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:27,641 INFO L93 Difference]: Finished difference Result 210 states and 245 transitions. [2024-11-17 00:48:27,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 00:48:27,641 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-11-17 00:48:27,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:27,642 INFO L225 Difference]: With dead ends: 210 [2024-11-17 00:48:27,642 INFO L226 Difference]: Without dead ends: 210 [2024-11-17 00:48:27,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:48:27,642 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 307 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:27,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 219 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:48:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-17 00:48:27,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 201. [2024-11-17 00:48:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 185 states have (on average 1.2918918918918918) internal successors, (239), 196 states have internal predecessors, (239), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:48:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 245 transitions. [2024-11-17 00:48:27,646 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 245 transitions. Word has length 52 [2024-11-17 00:48:27,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:27,646 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 245 transitions. [2024-11-17 00:48:27,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 00:48:27,646 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 245 transitions. [2024-11-17 00:48:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-17 00:48:27,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:27,647 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:27,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 00:48:27,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-17 00:48:27,848 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:27,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:27,848 INFO L85 PathProgramCache]: Analyzing trace with hash 696495705, now seen corresponding path program 1 times [2024-11-17 00:48:27,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:27,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453985575] [2024-11-17 00:48:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:27,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:28,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:28,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:48:28,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:28,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453985575] [2024-11-17 00:48:28,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453985575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:28,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091389705] [2024-11-17 00:48:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:28,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:28,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:28,524 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:28,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 00:48:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:28,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-17 00:48:28,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:28,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 00:48:28,826 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:48:28,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:48:28,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:48:28,897 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-17 00:48:28,897 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 25 treesize of output 26 [2024-11-17 00:48:28,996 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:48:28,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2024-11-17 00:48:29,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-17 00:48:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:48:29,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:48:29,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-17 00:48:29,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-17 00:48:29,387 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2076 (Array Int Int))) (not (= |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2076) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) 0)))) is different from false [2024-11-17 00:48:29,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:48:29,393 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2024-11-17 00:48:29,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:48:29,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2024-11-17 00:48:29,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-17 00:48:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:48:29,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091389705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:48:29,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:48:29,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 50 [2024-11-17 00:48:29,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146913576] [2024-11-17 00:48:29,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:48:29,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-17 00:48:29,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:29,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-17 00:48:29,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2188, Unknown=6, NotChecked=94, Total=2450 [2024-11-17 00:48:29,814 INFO L87 Difference]: Start difference. First operand 201 states and 245 transitions. Second operand has 50 states, 50 states have (on average 1.98) internal successors, (99), 43 states have internal predecessors, (99), 3 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-17 00:48:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:30,815 INFO L93 Difference]: Finished difference Result 222 states and 264 transitions. [2024-11-17 00:48:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-17 00:48:30,815 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.98) internal successors, (99), 43 states have internal predecessors, (99), 3 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 52 [2024-11-17 00:48:30,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:30,816 INFO L225 Difference]: With dead ends: 222 [2024-11-17 00:48:30,816 INFO L226 Difference]: Without dead ends: 218 [2024-11-17 00:48:30,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=267, Invalid=3037, Unknown=6, NotChecked=112, Total=3422 [2024-11-17 00:48:30,818 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 50 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:30,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1448 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1181 Invalid, 0 Unknown, 77 Unchecked, 0.7s Time] [2024-11-17 00:48:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-17 00:48:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 201. [2024-11-17 00:48:30,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 185 states have (on average 1.2864864864864864) internal successors, (238), 196 states have internal predecessors, (238), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:48:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 244 transitions. [2024-11-17 00:48:30,822 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 244 transitions. Word has length 52 [2024-11-17 00:48:30,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:30,822 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 244 transitions. [2024-11-17 00:48:30,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.98) internal successors, (99), 43 states have internal predecessors, (99), 3 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-17 00:48:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 244 transitions. [2024-11-17 00:48:30,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-17 00:48:30,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:30,823 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:30,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-17 00:48:31,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-17 00:48:31,028 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:31,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:31,028 INFO L85 PathProgramCache]: Analyzing trace with hash 797456992, now seen corresponding path program 1 times [2024-11-17 00:48:31,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:31,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748520799] [2024-11-17 00:48:31,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:31,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:31,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:31,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:48:31,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:31,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748520799] [2024-11-17 00:48:31,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748520799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:31,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525684499] [2024-11-17 00:48:31,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:31,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:31,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:31,590 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:31,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 00:48:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:31,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-17 00:48:31,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:31,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 00:48:31,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-17 00:48:31,975 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:48:31,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:48:32,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:48:32,145 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-17 00:48:32,146 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 34 treesize of output 33 [2024-11-17 00:48:32,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-11-17 00:48:32,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-17 00:48:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:48:32,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:48:32,859 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 24 treesize of output 16 [2024-11-17 00:48:32,860 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 20 treesize of output 12 [2024-11-17 00:48:32,879 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2195 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2195) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-11-17 00:48:32,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:48:32,946 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-17 00:48:32,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2024-11-17 00:48:32,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-17 00:48:33,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525684499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:33,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:48:33,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24] total 41 [2024-11-17 00:48:33,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263861192] [2024-11-17 00:48:33,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:48:33,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-17 00:48:33,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:33,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-17 00:48:33,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2196, Unknown=19, NotChecked=94, Total=2450 [2024-11-17 00:48:33,022 INFO L87 Difference]: Start difference. First operand 201 states and 244 transitions. Second operand has 42 states, 40 states have (on average 2.25) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:48:34,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:34,090 INFO L93 Difference]: Finished difference Result 220 states and 263 transitions. [2024-11-17 00:48:34,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-17 00:48:34,090 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 2.25) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 52 [2024-11-17 00:48:34,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:34,091 INFO L225 Difference]: With dead ends: 220 [2024-11-17 00:48:34,091 INFO L226 Difference]: Without dead ends: 220 [2024-11-17 00:48:34,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 50 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=292, Invalid=3474, Unknown=20, NotChecked=120, Total=3906 [2024-11-17 00:48:34,093 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 267 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:34,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 971 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-17 00:48:34,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-17 00:48:34,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 202. [2024-11-17 00:48:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 186 states have (on average 1.2849462365591398) internal successors, (239), 197 states have internal predecessors, (239), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:48:34,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 245 transitions. [2024-11-17 00:48:34,097 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 245 transitions. Word has length 52 [2024-11-17 00:48:34,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:34,098 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 245 transitions. [2024-11-17 00:48:34,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 2.25) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:48:34,098 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 245 transitions. [2024-11-17 00:48:34,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-17 00:48:34,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:34,099 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:34,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-17 00:48:34,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-17 00:48:34,300 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:34,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:34,300 INFO L85 PathProgramCache]: Analyzing trace with hash -531464381, now seen corresponding path program 3 times [2024-11-17 00:48:34,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:34,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679737929] [2024-11-17 00:48:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:34,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:34,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:34,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:34,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-17 00:48:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-17 00:48:34,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:34,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679737929] [2024-11-17 00:48:34,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679737929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:34,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651486115] [2024-11-17 00:48:34,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:48:34,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:34,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:34,402 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:34,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 00:48:34,625 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 00:48:34,625 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:48:34,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 00:48:34,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:34,650 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:48:34,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651486115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:34,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:48:34,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-17 00:48:34,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840334248] [2024-11-17 00:48:34,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:34,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:48:34,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:48:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:48:34,652 INFO L87 Difference]: Start difference. First operand 202 states and 245 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:48:34,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:34,664 INFO L93 Difference]: Finished difference Result 163 states and 192 transitions. [2024-11-17 00:48:34,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:48:34,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 54 [2024-11-17 00:48:34,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:34,666 INFO L225 Difference]: With dead ends: 163 [2024-11-17 00:48:34,666 INFO L226 Difference]: Without dead ends: 163 [2024-11-17 00:48:34,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:48:34,667 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:34,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:48:34,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-17 00:48:34,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-11-17 00:48:34,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 148 states have (on average 1.2702702702702702) internal successors, (188), 159 states have internal predecessors, (188), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 192 transitions. [2024-11-17 00:48:34,670 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 192 transitions. Word has length 54 [2024-11-17 00:48:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:34,671 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 192 transitions. [2024-11-17 00:48:34,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:48:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 192 transitions. [2024-11-17 00:48:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-17 00:48:34,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:34,671 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:34,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-17 00:48:34,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-17 00:48:34,872 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:34,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:34,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1853008287, now seen corresponding path program 1 times [2024-11-17 00:48:34,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:34,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53442257] [2024-11-17 00:48:34,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:34,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:35,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:35,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:35,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53442257] [2024-11-17 00:48:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53442257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82250194] [2024-11-17 00:48:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:35,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:35,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:35,099 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:35,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 00:48:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:35,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-17 00:48:35,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:35,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-11-17 00:48:35,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 00:48:35,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 00:48:35,876 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 00:48:35,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:48:36,013 INFO L349 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2024-11-17 00:48:36,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2024-11-17 00:48:36,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-17 00:48:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:36,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82250194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:48:36,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:48:36,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 9] total 34 [2024-11-17 00:48:36,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613124160] [2024-11-17 00:48:36,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:48:36,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-17 00:48:36,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:36,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-17 00:48:36,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2024-11-17 00:48:36,056 INFO L87 Difference]: Start difference. First operand 163 states and 192 transitions. Second operand has 34 states, 34 states have (on average 2.911764705882353) internal successors, (99), 31 states have internal predecessors, (99), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 00:48:36,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:36,983 INFO L93 Difference]: Finished difference Result 198 states and 238 transitions. [2024-11-17 00:48:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-17 00:48:36,983 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.911764705882353) internal successors, (99), 31 states have internal predecessors, (99), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2024-11-17 00:48:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:36,984 INFO L225 Difference]: With dead ends: 198 [2024-11-17 00:48:36,984 INFO L226 Difference]: Without dead ends: 198 [2024-11-17 00:48:36,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=251, Invalid=2101, Unknown=0, NotChecked=0, Total=2352 [2024-11-17 00:48:36,985 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 267 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:36,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 808 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 00:48:36,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-17 00:48:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 184. [2024-11-17 00:48:36,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 169 states have (on average 1.2899408284023668) internal successors, (218), 180 states have internal predecessors, (218), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 222 transitions. [2024-11-17 00:48:36,989 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 222 transitions. Word has length 54 [2024-11-17 00:48:36,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:36,989 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 222 transitions. [2024-11-17 00:48:36,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.911764705882353) internal successors, (99), 31 states have internal predecessors, (99), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 00:48:36,990 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 222 transitions. [2024-11-17 00:48:36,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-17 00:48:36,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:36,990 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:37,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-17 00:48:37,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:37,191 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:37,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:37,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1577148363, now seen corresponding path program 1 times [2024-11-17 00:48:37,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:37,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501777212] [2024-11-17 00:48:37,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:37,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:37,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:37,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:37,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:37,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501777212] [2024-11-17 00:48:37,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501777212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:37,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45624450] [2024-11-17 00:48:37,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:37,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:37,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:37,370 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:37,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 00:48:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:37,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 00:48:37,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:37,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:48:37,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-17 00:48:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-17 00:48:37,711 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:48:37,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45624450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:37,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:48:37,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 9 [2024-11-17 00:48:37,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008308948] [2024-11-17 00:48:37,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:37,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:48:37,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:37,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:48:37,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:48:37,713 INFO L87 Difference]: Start difference. First operand 184 states and 222 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:37,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:37,818 INFO L93 Difference]: Finished difference Result 183 states and 219 transitions. [2024-11-17 00:48:37,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 00:48:37,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 55 [2024-11-17 00:48:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:37,820 INFO L225 Difference]: With dead ends: 183 [2024-11-17 00:48:37,820 INFO L226 Difference]: Without dead ends: 183 [2024-11-17 00:48:37,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:48:37,821 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 104 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:37,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 137 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:48:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-17 00:48:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-17 00:48:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 169 states have (on average 1.272189349112426) internal successors, (215), 179 states have internal predecessors, (215), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 219 transitions. [2024-11-17 00:48:37,828 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 219 transitions. Word has length 55 [2024-11-17 00:48:37,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:37,829 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 219 transitions. [2024-11-17 00:48:37,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:37,829 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 219 transitions. [2024-11-17 00:48:37,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-17 00:48:37,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:37,829 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:37,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-17 00:48:38,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-17 00:48:38,030 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:38,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:38,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1646959004, now seen corresponding path program 1 times [2024-11-17 00:48:38,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:38,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240529068] [2024-11-17 00:48:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:38,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:38,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:38,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:48:38,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:38,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240529068] [2024-11-17 00:48:38,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240529068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:38,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210556294] [2024-11-17 00:48:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:38,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:38,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:38,665 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:38,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 00:48:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:38,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-17 00:48:38,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:39,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-17 00:48:39,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-17 00:48:39,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-17 00:48:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:48:39,446 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:48:39,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210556294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:48:39,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:48:39,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [24] total 39 [2024-11-17 00:48:39,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246759666] [2024-11-17 00:48:39,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:48:39,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 00:48:39,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:39,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 00:48:39,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1470, Unknown=0, NotChecked=0, Total=1560 [2024-11-17 00:48:39,448 INFO L87 Difference]: Start difference. First operand 183 states and 219 transitions. Second operand has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:39,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:39,968 INFO L93 Difference]: Finished difference Result 201 states and 244 transitions. [2024-11-17 00:48:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-17 00:48:39,968 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2024-11-17 00:48:39,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:39,969 INFO L225 Difference]: With dead ends: 201 [2024-11-17 00:48:39,970 INFO L226 Difference]: Without dead ends: 201 [2024-11-17 00:48:39,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=195, Invalid=2355, Unknown=0, NotChecked=0, Total=2550 [2024-11-17 00:48:39,972 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 147 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:39,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 489 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:48:39,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-17 00:48:39,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2024-11-17 00:48:39,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 185 states have (on average 1.2864864864864864) internal successors, (238), 195 states have internal predecessors, (238), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:39,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 242 transitions. [2024-11-17 00:48:39,976 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 242 transitions. Word has length 56 [2024-11-17 00:48:39,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:39,976 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 242 transitions. [2024-11-17 00:48:39,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:39,977 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 242 transitions. [2024-11-17 00:48:39,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-17 00:48:39,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:39,979 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:39,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-17 00:48:40,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:40,180 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:40,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:40,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1334194046, now seen corresponding path program 1 times [2024-11-17 00:48:40,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:40,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659476329] [2024-11-17 00:48:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:40,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:40,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:40,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:40,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:40,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659476329] [2024-11-17 00:48:40,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659476329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:40,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773226107] [2024-11-17 00:48:40,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:40,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:40,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:40,356 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:40,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-17 00:48:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:40,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-17 00:48:40,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:40,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2024-11-17 00:48:40,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-17 00:48:40,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-17 00:48:40,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-17 00:48:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:40,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:48:40,653 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 28 treesize of output 20 [2024-11-17 00:48:40,655 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 28 treesize of output 20 [2024-11-17 00:48:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:40,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773226107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:48:40,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:48:40,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 10 [2024-11-17 00:48:40,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266280394] [2024-11-17 00:48:40,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:48:40,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 00:48:40,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:40,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 00:48:40,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:48:40,665 INFO L87 Difference]: Start difference. First operand 199 states and 242 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:40,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:40,823 INFO L93 Difference]: Finished difference Result 190 states and 228 transitions. [2024-11-17 00:48:40,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:48:40,823 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2024-11-17 00:48:40,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:40,824 INFO L225 Difference]: With dead ends: 190 [2024-11-17 00:48:40,824 INFO L226 Difference]: Without dead ends: 190 [2024-11-17 00:48:40,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-17 00:48:40,825 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 13 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:40,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 327 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:48:40,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-17 00:48:40,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-11-17 00:48:40,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 176 states have (on average 1.2727272727272727) internal successors, (224), 186 states have internal predecessors, (224), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:40,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 228 transitions. [2024-11-17 00:48:40,829 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 228 transitions. Word has length 58 [2024-11-17 00:48:40,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:40,829 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 228 transitions. [2024-11-17 00:48:40,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-17 00:48:40,829 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 228 transitions. [2024-11-17 00:48:40,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-17 00:48:40,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:40,830 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:40,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-17 00:48:41,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:41,032 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:41,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:41,032 INFO L85 PathProgramCache]: Analyzing trace with hash -689787128, now seen corresponding path program 1 times [2024-11-17 00:48:41,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:41,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896240648] [2024-11-17 00:48:41,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:41,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:41,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:41,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-17 00:48:41,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:41,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896240648] [2024-11-17 00:48:41,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896240648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:41,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001500411] [2024-11-17 00:48:41,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:41,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:41,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:41,192 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:41,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-17 00:48:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:41,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-17 00:48:41,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:41,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-17 00:48:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 00:48:41,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:48:41,716 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-11-17 00:48:41,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-17 00:48:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-17 00:48:41,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001500411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:48:41,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:48:41,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 8] total 21 [2024-11-17 00:48:41,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921635192] [2024-11-17 00:48:41,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:48:41,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 00:48:41,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:41,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 00:48:41,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2024-11-17 00:48:41,794 INFO L87 Difference]: Start difference. First operand 190 states and 228 transitions. Second operand has 22 states, 21 states have (on average 5.666666666666667) internal successors, (119), 20 states have internal predecessors, (119), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 00:48:42,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:42,187 INFO L93 Difference]: Finished difference Result 281 states and 334 transitions. [2024-11-17 00:48:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-17 00:48:42,190 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.666666666666667) internal successors, (119), 20 states have internal predecessors, (119), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2024-11-17 00:48:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:42,191 INFO L225 Difference]: With dead ends: 281 [2024-11-17 00:48:42,191 INFO L226 Difference]: Without dead ends: 281 [2024-11-17 00:48:42,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2024-11-17 00:48:42,191 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 279 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:42,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 566 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 00:48:42,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-17 00:48:42,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 258. [2024-11-17 00:48:42,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 244 states have (on average 1.2868852459016393) internal successors, (314), 254 states have internal predecessors, (314), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 318 transitions. [2024-11-17 00:48:42,196 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 318 transitions. Word has length 64 [2024-11-17 00:48:42,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:42,196 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 318 transitions. [2024-11-17 00:48:42,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.666666666666667) internal successors, (119), 20 states have internal predecessors, (119), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 00:48:42,196 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 318 transitions. [2024-11-17 00:48:42,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-17 00:48:42,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:42,197 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:42,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-17 00:48:42,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:42,402 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:42,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:42,402 INFO L85 PathProgramCache]: Analyzing trace with hash -27382076, now seen corresponding path program 1 times [2024-11-17 00:48:42,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:42,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102305204] [2024-11-17 00:48:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:42,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:42,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:42,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-17 00:48:42,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:42,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102305204] [2024-11-17 00:48:42,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102305204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:42,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875065546] [2024-11-17 00:48:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:42,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:42,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:42,787 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:42,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-17 00:48:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:43,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-17 00:48:43,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:43,983 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-17 00:48:43,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2024-11-17 00:48:43,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-17 00:48:44,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-17 00:48:44,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-17 00:48:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:48:44,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:48:44,364 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 60 treesize of output 48 [2024-11-17 00:48:44,546 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-17 00:48:44,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-17 00:48:44,699 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 8 treesize of output 4 [2024-11-17 00:48:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:48:44,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875065546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:48:44,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:48:44,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 27, 19] total 48 [2024-11-17 00:48:44,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686064642] [2024-11-17 00:48:44,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:48:44,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-17 00:48:44,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:48:44,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-17 00:48:44,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1991, Unknown=0, NotChecked=0, Total=2256 [2024-11-17 00:48:44,802 INFO L87 Difference]: Start difference. First operand 258 states and 318 transitions. Second operand has 48 states, 48 states have (on average 2.8541666666666665) internal successors, (137), 46 states have internal predecessors, (137), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 00:48:45,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:48:45,817 INFO L93 Difference]: Finished difference Result 179 states and 193 transitions. [2024-11-17 00:48:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-17 00:48:45,817 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.8541666666666665) internal successors, (137), 46 states have internal predecessors, (137), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2024-11-17 00:48:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:48:45,818 INFO L225 Difference]: With dead ends: 179 [2024-11-17 00:48:45,818 INFO L226 Difference]: Without dead ends: 179 [2024-11-17 00:48:45,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2024-11-17 00:48:45,819 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 157 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-17 00:48:45,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1202 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-17 00:48:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-17 00:48:45,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 153. [2024-11-17 00:48:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 139 states have (on average 1.20863309352518) internal successors, (168), 149 states have internal predecessors, (168), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:48:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2024-11-17 00:48:45,822 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 70 [2024-11-17 00:48:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:48:45,822 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2024-11-17 00:48:45,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.8541666666666665) internal successors, (137), 46 states have internal predecessors, (137), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 00:48:45,822 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2024-11-17 00:48:45,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-17 00:48:45,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:48:45,823 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:48:45,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-17 00:48:46,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:46,024 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-17 00:48:46,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:48:46,024 INFO L85 PathProgramCache]: Analyzing trace with hash -772869615, now seen corresponding path program 1 times [2024-11-17 00:48:46,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:48:46,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57582813] [2024-11-17 00:48:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:46,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:48:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:47,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:48:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:47,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-17 00:48:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:48:47,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:48:47,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57582813] [2024-11-17 00:48:47,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57582813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:48:47,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266861393] [2024-11-17 00:48:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:48:47,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:48:47,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:48:48,001 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:48:48,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-17 00:48:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:48:48,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-17 00:48:48,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:48:48,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-17 00:48:48,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:48:49,131 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-17 00:48:49,131 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 109 treesize of output 100 [2024-11-17 00:48:51,095 INFO L349 Elim1Store]: treesize reduction 36, result has 57.1 percent of original size [2024-11-17 00:48:51,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 432 treesize of output 296 [2024-11-17 00:49:11,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:49:11,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 639 treesize of output 667