./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 023d838f 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-023d838-m [2024-11-10 15:28:59,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:28:59,825 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 15:28:59,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:28:59,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:28:59,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:28:59,854 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:28:59,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:28:59,855 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:28:59,856 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:28:59,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:28:59,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:28:59,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:28:59,858 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:28:59,859 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:28:59,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:28:59,860 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 15:28:59,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:28:59,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 15:28:59,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:28:59,860 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:28:59,861 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:28:59,861 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:28:59,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:28:59,862 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:28:59,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:28:59,862 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:28:59,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 15:28:59,863 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:28:59,863 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:28:59,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:28:59,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:28:59,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:28:59,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:28:59,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:28:59,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:28:59,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:28:59,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:28:59,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:28:59,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:28:59,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:28:59,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:28:59,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3340815bef7e21ae2d4803d7059577c1761bb3b7b4bb24b2b34d5d0d0054fd10 [2024-11-10 15:29:00,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:29:00,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:29:00,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:29:00,095 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:29:00,096 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:29:00,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i [2024-11-10 15:29:01,429 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:29:01,629 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:29:01,630 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i [2024-11-10 15:29:01,642 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eb07d05d/fa5a9e6764e54c2cb91e1766057aa2fc/FLAG470dea637 [2024-11-10 15:29:01,989 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eb07d05d/fa5a9e6764e54c2cb91e1766057aa2fc [2024-11-10 15:29:01,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:29:01,993 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:29:01,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:29:01,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:29:01,999 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:29:02,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:29:01" (1/1) ... [2024-11-10 15:29:02,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412c9d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02, skipping insertion in model container [2024-11-10 15:29:02,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:29:01" (1/1) ... [2024-11-10 15:29:02,029 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:29:02,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:29:02,354 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:29:02,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:29:02,428 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:29:02,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02 WrapperNode [2024-11-10 15:29:02,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:29:02,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:29:02,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:29:02,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:29:02,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02" (1/1) ... [2024-11-10 15:29:02,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02" (1/1) ... [2024-11-10 15:29:02,464 INFO L138 Inliner]: procedures = 126, calls = 37, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 124 [2024-11-10 15:29:02,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:29:02,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:29:02,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:29:02,465 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:29:02,476 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02" (1/1) ... [2024-11-10 15:29:02,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02" (1/1) ... [2024-11-10 15:29:02,485 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02" (1/1) ... [2024-11-10 15:29:02,512 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]. [2024-11-10 15:29:02,515 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02" (1/1) ... [2024-11-10 15:29:02,515 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02" (1/1) ... [2024-11-10 15:29:02,524 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02" (1/1) ... [2024-11-10 15:29:02,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02" (1/1) ... [2024-11-10 15:29:02,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02" (1/1) ... [2024-11-10 15:29:02,527 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02" (1/1) ... [2024-11-10 15:29:02,530 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:29:02,531 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:29:02,531 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:29:02,531 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:29:02,536 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02" (1/1) ... [2024-11-10 15:29:02,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:29:02,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:02,570 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) [2024-11-10 15:29:02,574 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 [2024-11-10 15:29:02,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 15:29:02,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 15:29:02,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 15:29:02,625 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-11-10 15:29:02,625 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-11-10 15:29:02,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 15:29:02,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 15:29:02,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 15:29:02,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 15:29:02,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 15:29:02,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 15:29:02,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 15:29:02,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 15:29:02,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 15:29:02,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 15:29:02,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 15:29:02,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-10 15:29:02,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-10 15:29:02,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 15:29:02,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 15:29:02,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 15:29:02,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:29:02,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:29:02,732 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:29:02,734 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:29:02,968 INFO L1247 $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; [2024-11-10 15:29:03,006 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint myexit_returnLabel#1: assume true;havoc myexit_~s#1;havoc myexit_#in~s#1;assume { :end_inline_myexit } true; [2024-11-10 15:29:03,031 INFO L? ?]: Removed 102 outVars from TransFormulas that were not future-live. [2024-11-10 15:29:03,031 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:29:03,045 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:29:03,047 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:29:03,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:29:03 BoogieIcfgContainer [2024-11-10 15:29:03,048 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:29:03,051 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:29:03,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:29:03,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:29:03,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:29:01" (1/3) ... [2024-11-10 15:29:03,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56409599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:29:03, skipping insertion in model container [2024-11-10 15:29:03,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:29:02" (2/3) ... [2024-11-10 15:29:03,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56409599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:29:03, skipping insertion in model container [2024-11-10 15:29:03,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:29:03" (3/3) ... [2024-11-10 15:29:03,057 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_reverse.i [2024-11-10 15:29:03,069 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:29:03,069 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-11-10 15:29:03,111 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:29:03,117 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;@45619fd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:29:03,117 INFO L334 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2024-11-10 15:29:03,121 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) [2024-11-10 15:29:03,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-10 15:29:03,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:03,126 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 15:29:03,127 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)] === [2024-11-10 15:29:03,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash -94489962, now seen corresponding path program 1 times [2024-11-10 15:29:03,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:03,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560294411] [2024-11-10 15:29:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:03,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:29:03,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:03,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560294411] [2024-11-10 15:29:03,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560294411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:03,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:03,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:29:03,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014297149] [2024-11-10 15:29:03,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:03,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:29:03,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:03,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:29:03,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:29:03,390 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) [2024-11-10 15:29:03,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:03,479 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2024-11-10 15:29:03,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:29:03,481 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 [2024-11-10 15:29:03,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:03,513 INFO L225 Difference]: With dead ends: 104 [2024-11-10 15:29:03,514 INFO L226 Difference]: Without dead ends: 100 [2024-11-10 15:29:03,516 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 [2024-11-10 15:29:03,521 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 [2024-11-10 15:29:03,523 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] [2024-11-10 15:29:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-10 15:29:03,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-10 15:29:03,579 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) [2024-11-10 15:29:03,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2024-11-10 15:29:03,584 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 6 [2024-11-10 15:29:03,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:03,585 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2024-11-10 15:29:03,586 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) [2024-11-10 15:29:03,586 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2024-11-10 15:29:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-10 15:29:03,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:03,586 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 15:29:03,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:29:03,587 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)] === [2024-11-10 15:29:03,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:03,588 INFO L85 PathProgramCache]: Analyzing trace with hash -94489961, now seen corresponding path program 1 times [2024-11-10 15:29:03,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:03,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467135076] [2024-11-10 15:29:03,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:03,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:29:03,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:03,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467135076] [2024-11-10 15:29:03,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467135076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:03,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:03,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:29:03,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097444468] [2024-11-10 15:29:03,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:03,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:29:03,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:03,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:29:03,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:29:03,705 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) [2024-11-10 15:29:03,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:03,761 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2024-11-10 15:29:03,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:29:03,761 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 [2024-11-10 15:29:03,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:03,762 INFO L225 Difference]: With dead ends: 98 [2024-11-10 15:29:03,762 INFO L226 Difference]: Without dead ends: 98 [2024-11-10 15:29:03,762 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 [2024-11-10 15:29:03,765 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:03,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 165 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:29:03,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-10 15:29:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-10 15:29:03,774 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) [2024-11-10 15:29:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2024-11-10 15:29:03,777 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 6 [2024-11-10 15:29:03,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:03,777 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2024-11-10 15:29:03,778 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) [2024-11-10 15:29:03,778 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2024-11-10 15:29:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-10 15:29:03,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:03,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:29:03,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:29:03,779 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)] === [2024-11-10 15:29:03,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:03,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2125398478, now seen corresponding path program 1 times [2024-11-10 15:29:03,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:03,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190352219] [2024-11-10 15:29:03,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:03,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:03,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:29:03,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:03,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190352219] [2024-11-10 15:29:03,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190352219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:03,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:03,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:29:03,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501378389] [2024-11-10 15:29:03,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:03,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:29:03,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:03,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:29:03,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:29:03,925 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) [2024-11-10 15:29:04,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:04,008 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2024-11-10 15:29:04,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:29:04,010 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 [2024-11-10 15:29:04,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:04,011 INFO L225 Difference]: With dead ends: 106 [2024-11-10 15:29:04,011 INFO L226 Difference]: Without dead ends: 106 [2024-11-10 15:29:04,012 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 [2024-11-10 15:29:04,012 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 [2024-11-10 15:29:04,015 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] [2024-11-10 15:29:04,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-10 15:29:04,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2024-11-10 15:29:04,024 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) [2024-11-10 15:29:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2024-11-10 15:29:04,029 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 14 [2024-11-10 15:29:04,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:04,029 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2024-11-10 15:29:04,029 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) [2024-11-10 15:29:04,029 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2024-11-10 15:29:04,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-10 15:29:04,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:04,030 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:29:04,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 15:29:04,030 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)] === [2024-11-10 15:29:04,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:04,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2080692714, now seen corresponding path program 1 times [2024-11-10 15:29:04,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:04,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153583390] [2024-11-10 15:29:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:04,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:04,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:04,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:04,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:29:04,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:04,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153583390] [2024-11-10 15:29:04,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153583390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:04,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:04,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 15:29:04,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752802970] [2024-11-10 15:29:04,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:04,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:29:04,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:04,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:29:04,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:29:04,230 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) [2024-11-10 15:29:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:04,395 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2024-11-10 15:29:04,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:29:04,396 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 [2024-11-10 15:29:04,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:04,396 INFO L225 Difference]: With dead ends: 99 [2024-11-10 15:29:04,397 INFO L226 Difference]: Without dead ends: 99 [2024-11-10 15:29:04,397 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 [2024-11-10 15:29:04,398 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 2 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-10 15:29:04,398 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] [2024-11-10 15:29:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-10 15:29:04,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-10 15:29:04,402 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) [2024-11-10 15:29:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2024-11-10 15:29:04,403 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 23 [2024-11-10 15:29:04,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:04,403 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2024-11-10 15:29:04,403 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) [2024-11-10 15:29:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2024-11-10 15:29:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-10 15:29:04,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:04,404 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:29:04,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 15:29:04,405 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)] === [2024-11-10 15:29:04,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:04,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2080692715, now seen corresponding path program 1 times [2024-11-10 15:29:04,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:04,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032284843] [2024-11-10 15:29:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:04,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:04,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:04,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:04,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:04,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032284843] [2024-11-10 15:29:04,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032284843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:04,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:04,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 15:29:04,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898425573] [2024-11-10 15:29:04,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:04,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:29:04,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:04,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:29:04,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:29:04,597 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) [2024-11-10 15:29:04,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:04,721 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2024-11-10 15:29:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:29:04,721 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 [2024-11-10 15:29:04,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:04,722 INFO L225 Difference]: With dead ends: 98 [2024-11-10 15:29:04,724 INFO L226 Difference]: Without dead ends: 98 [2024-11-10 15:29:04,724 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 [2024-11-10 15:29:04,725 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:04,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 371 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:29:04,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-10 15:29:04,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-10 15:29:04,731 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) [2024-11-10 15:29:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2024-11-10 15:29:04,734 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 23 [2024-11-10 15:29:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:04,735 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2024-11-10 15:29:04,735 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) [2024-11-10 15:29:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2024-11-10 15:29:04,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 15:29:04,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:04,736 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] [2024-11-10 15:29:04,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 15:29:04,736 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)] === [2024-11-10 15:29:04,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:04,736 INFO L85 PathProgramCache]: Analyzing trace with hash -655205143, now seen corresponding path program 1 times [2024-11-10 15:29:04,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:04,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123524339] [2024-11-10 15:29:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:04,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:04,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:04,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:29:05,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:05,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123524339] [2024-11-10 15:29:05,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123524339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:05,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32761040] [2024-11-10 15:29:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:05,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:05,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:05,014 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) [2024-11-10 15:29:05,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 15:29:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:05,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-10 15:29:05,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:05,168 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 [2024-11-10 15:29:05,227 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 [2024-11-10 15:29:05,321 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-10 15:29:05,322 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 [2024-11-10 15:29:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2024-11-10 15:29:05,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:05,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32761040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:05,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:29:05,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2024-11-10 15:29:05,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180283854] [2024-11-10 15:29:05,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:29:05,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:29:05,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:05,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:29:05,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2024-11-10 15:29:05,395 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) [2024-11-10 15:29:05,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:05,586 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2024-11-10 15:29:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:29:05,587 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 [2024-11-10 15:29:05,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:05,587 INFO L225 Difference]: With dead ends: 97 [2024-11-10 15:29:05,587 INFO L226 Difference]: Without dead ends: 97 [2024-11-10 15:29:05,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=124, Unknown=1, NotChecked=22, Total=182 [2024-11-10 15:29:05,588 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:05,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 342 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 94 Unchecked, 0.1s Time] [2024-11-10 15:29:05,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-10 15:29:05,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-10 15:29:05,596 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) [2024-11-10 15:29:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2024-11-10 15:29:05,596 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 27 [2024-11-10 15:29:05,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:05,597 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2024-11-10 15:29:05,597 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) [2024-11-10 15:29:05,597 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2024-11-10 15:29:05,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 15:29:05,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:05,598 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] [2024-11-10 15:29:05,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 15:29:05,798 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 [2024-11-10 15:29:05,802 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)] === [2024-11-10 15:29:05,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash -655205142, now seen corresponding path program 1 times [2024-11-10 15:29:05,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:05,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92900218] [2024-11-10 15:29:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:05,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:06,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:06,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:06,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92900218] [2024-11-10 15:29:06,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92900218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:06,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042008225] [2024-11-10 15:29:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:06,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:06,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:06,108 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) [2024-11-10 15:29:06,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 15:29:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:06,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-10 15:29:06,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:06,197 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 [2024-11-10 15:29:06,331 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 15:29:06,331 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 [2024-11-10 15:29:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:29:06,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:06,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042008225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:06,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:29:06,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2024-11-10 15:29:06,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705844863] [2024-11-10 15:29:06,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:29:06,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 15:29:06,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:06,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 15:29:06,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-10 15:29:06,477 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) [2024-11-10 15:29:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:06,930 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2024-11-10 15:29:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 15:29:06,931 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 [2024-11-10 15:29:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:06,932 INFO L225 Difference]: With dead ends: 98 [2024-11-10 15:29:06,932 INFO L226 Difference]: Without dead ends: 98 [2024-11-10 15:29:06,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-11-10 15:29:06,933 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 4 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:06,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 768 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:29:06,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-10 15:29:06,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2024-11-10 15:29:06,937 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) [2024-11-10 15:29:06,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2024-11-10 15:29:06,938 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 27 [2024-11-10 15:29:06,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:06,938 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2024-11-10 15:29:06,938 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) [2024-11-10 15:29:06,938 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2024-11-10 15:29:06,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-10 15:29:06,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:06,939 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] [2024-11-10 15:29:06,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 15:29:07,139 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 [2024-11-10 15:29:07,140 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)] === [2024-11-10 15:29:07,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:07,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2104611792, now seen corresponding path program 1 times [2024-11-10 15:29:07,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:07,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969581318] [2024-11-10 15:29:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:07,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:07,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:07,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:07,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:07,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969581318] [2024-11-10 15:29:07,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969581318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:07,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:07,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 15:29:07,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113060523] [2024-11-10 15:29:07,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:07,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:29:07,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:29:07,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:29:07,219 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) [2024-11-10 15:29:07,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:07,285 INFO L93 Difference]: Finished difference Result 159 states and 167 transitions. [2024-11-10 15:29:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:29:07,285 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 [2024-11-10 15:29:07,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:07,286 INFO L225 Difference]: With dead ends: 159 [2024-11-10 15:29:07,286 INFO L226 Difference]: Without dead ends: 159 [2024-11-10 15:29:07,286 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 [2024-11-10 15:29:07,287 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 [2024-11-10 15:29:07,287 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] [2024-11-10 15:29:07,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-10 15:29:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 98. [2024-11-10 15:29:07,290 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) [2024-11-10 15:29:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2024-11-10 15:29:07,290 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 32 [2024-11-10 15:29:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:07,291 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2024-11-10 15:29:07,291 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) [2024-11-10 15:29:07,291 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2024-11-10 15:29:07,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-10 15:29:07,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:07,291 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] [2024-11-10 15:29:07,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 15:29:07,292 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)] === [2024-11-10 15:29:07,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2104611920, now seen corresponding path program 1 times [2024-11-10 15:29:07,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:07,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849662803] [2024-11-10 15:29:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:07,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:07,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:07,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:07,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849662803] [2024-11-10 15:29:07,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849662803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:07,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:07,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 15:29:07,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498088998] [2024-11-10 15:29:07,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:07,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:29:07,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:07,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:29:07,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:29:07,464 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) [2024-11-10 15:29:07,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:07,584 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2024-11-10 15:29:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:29:07,584 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 [2024-11-10 15:29:07,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:07,585 INFO L225 Difference]: With dead ends: 139 [2024-11-10 15:29:07,585 INFO L226 Difference]: Without dead ends: 139 [2024-11-10 15:29:07,585 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 [2024-11-10 15:29:07,586 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:07,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 157 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:29:07,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-10 15:29:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 95. [2024-11-10 15:29:07,588 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) [2024-11-10 15:29:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2024-11-10 15:29:07,589 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 32 [2024-11-10 15:29:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:07,589 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2024-11-10 15:29:07,589 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) [2024-11-10 15:29:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2024-11-10 15:29:07,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-10 15:29:07,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:07,590 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] [2024-11-10 15:29:07,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 15:29:07,590 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)] === [2024-11-10 15:29:07,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:07,590 INFO L85 PathProgramCache]: Analyzing trace with hash 2104611921, now seen corresponding path program 1 times [2024-11-10 15:29:07,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:07,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405660838] [2024-11-10 15:29:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:07,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:07,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:07,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 15:29:07,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405660838] [2024-11-10 15:29:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405660838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852192777] [2024-11-10 15:29:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:07,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:07,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:07,852 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) [2024-11-10 15:29:07,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 15:29:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:07,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 15:29:07,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:07,954 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 [2024-11-10 15:29:07,960 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 [2024-11-10 15:29:07,972 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 [2024-11-10 15:29:08,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:29:08,001 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 [2024-11-10 15:29:08,021 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 [2024-11-10 15:29:08,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:29:08,049 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 [2024-11-10 15:29:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 15:29:08,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:08,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852192777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:08,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:29:08,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2024-11-10 15:29:08,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068426033] [2024-11-10 15:29:08,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:29:08,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:29:08,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:08,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:29:08,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=120, Unknown=1, NotChecked=22, Total=182 [2024-11-10 15:29:08,173 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) [2024-11-10 15:29:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:08,346 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2024-11-10 15:29:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:29:08,347 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 [2024-11-10 15:29:08,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:08,347 INFO L225 Difference]: With dead ends: 87 [2024-11-10 15:29:08,347 INFO L226 Difference]: Without dead ends: 87 [2024-11-10 15:29:08,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=138, Unknown=1, NotChecked=24, Total=210 [2024-11-10 15:29:08,348 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:08,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 183 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 207 Invalid, 0 Unknown, 81 Unchecked, 0.1s Time] [2024-11-10 15:29:08,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-10 15:29:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-10 15:29:08,350 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) [2024-11-10 15:29:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2024-11-10 15:29:08,351 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 32 [2024-11-10 15:29:08,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:08,351 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 92 transitions. [2024-11-10 15:29:08,351 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) [2024-11-10 15:29:08,351 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 92 transitions. [2024-11-10 15:29:08,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-10 15:29:08,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:08,352 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] [2024-11-10 15:29:08,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 15:29:08,552 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 [2024-11-10 15:29:08,553 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)] === [2024-11-10 15:29:08,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:08,553 INFO L85 PathProgramCache]: Analyzing trace with hash 561174275, now seen corresponding path program 1 times [2024-11-10 15:29:08,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:08,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343189000] [2024-11-10 15:29:08,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:08,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:08,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:08,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:09,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:09,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343189000] [2024-11-10 15:29:09,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343189000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:09,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:09,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-10 15:29:09,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040206297] [2024-11-10 15:29:09,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:09,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 15:29:09,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:09,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 15:29:09,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-10 15:29:09,044 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) [2024-11-10 15:29:09,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:09,649 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2024-11-10 15:29:09,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:29:09,650 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 [2024-11-10 15:29:09,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:09,651 INFO L225 Difference]: With dead ends: 160 [2024-11-10 15:29:09,651 INFO L226 Difference]: Without dead ends: 160 [2024-11-10 15:29:09,652 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 [2024-11-10 15:29:09,652 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 166 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:09,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 605 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 15:29:09,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-10 15:29:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 129. [2024-11-10 15:29:09,658 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) [2024-11-10 15:29:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 162 transitions. [2024-11-10 15:29:09,659 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 162 transitions. Word has length 35 [2024-11-10 15:29:09,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:09,659 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 162 transitions. [2024-11-10 15:29:09,659 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) [2024-11-10 15:29:09,659 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 162 transitions. [2024-11-10 15:29:09,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-10 15:29:09,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:09,660 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] [2024-11-10 15:29:09,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 15:29:09,660 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)] === [2024-11-10 15:29:09,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:09,660 INFO L85 PathProgramCache]: Analyzing trace with hash 561174274, now seen corresponding path program 1 times [2024-11-10 15:29:09,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:09,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882035275] [2024-11-10 15:29:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:09,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:09,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:09,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:29:09,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:09,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882035275] [2024-11-10 15:29:09,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882035275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:09,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:09,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-10 15:29:09,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729216864] [2024-11-10 15:29:09,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:09,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 15:29:09,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:09,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 15:29:09,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:29:09,900 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) [2024-11-10 15:29:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:10,211 INFO L93 Difference]: Finished difference Result 180 states and 221 transitions. [2024-11-10 15:29:10,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 15:29:10,211 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 [2024-11-10 15:29:10,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:10,212 INFO L225 Difference]: With dead ends: 180 [2024-11-10 15:29:10,212 INFO L226 Difference]: Without dead ends: 180 [2024-11-10 15:29:10,213 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 [2024-11-10 15:29:10,213 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 128 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-11-10 15:29:10,214 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] [2024-11-10 15:29:10,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-10 15:29:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 130. [2024-11-10 15:29:10,218 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) [2024-11-10 15:29:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 160 transitions. [2024-11-10 15:29:10,218 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 160 transitions. Word has length 35 [2024-11-10 15:29:10,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:10,220 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 160 transitions. [2024-11-10 15:29:10,220 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) [2024-11-10 15:29:10,220 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 160 transitions. [2024-11-10 15:29:10,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-10 15:29:10,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:10,221 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] [2024-11-10 15:29:10,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 15:29:10,221 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)] === [2024-11-10 15:29:10,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:10,221 INFO L85 PathProgramCache]: Analyzing trace with hash -658865025, now seen corresponding path program 1 times [2024-11-10 15:29:10,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:10,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037429873] [2024-11-10 15:29:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:10,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:10,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:10,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:10,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:10,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037429873] [2024-11-10 15:29:10,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037429873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:10,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:10,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-10 15:29:10,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876236211] [2024-11-10 15:29:10,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:10,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 15:29:10,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:10,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 15:29:10,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:29:10,401 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) [2024-11-10 15:29:10,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:10,584 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2024-11-10 15:29:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 15:29:10,584 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 [2024-11-10 15:29:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:10,585 INFO L225 Difference]: With dead ends: 132 [2024-11-10 15:29:10,585 INFO L226 Difference]: Without dead ends: 132 [2024-11-10 15:29:10,585 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 [2024-11-10 15:29:10,586 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:10,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 575 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:29:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-10 15:29:10,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2024-11-10 15:29:10,588 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) [2024-11-10 15:29:10,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 159 transitions. [2024-11-10 15:29:10,589 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 159 transitions. Word has length 41 [2024-11-10 15:29:10,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:10,589 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 159 transitions. [2024-11-10 15:29:10,589 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) [2024-11-10 15:29:10,589 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 159 transitions. [2024-11-10 15:29:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-10 15:29:10,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:10,590 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] [2024-11-10 15:29:10,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 15:29:10,590 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)] === [2024-11-10 15:29:10,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:10,590 INFO L85 PathProgramCache]: Analyzing trace with hash -657788098, now seen corresponding path program 1 times [2024-11-10 15:29:10,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:10,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422376299] [2024-11-10 15:29:10,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:10,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:11,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:11,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:11,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:11,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422376299] [2024-11-10 15:29:11,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422376299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:11,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892801077] [2024-11-10 15:29:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:11,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:11,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:11,334 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) [2024-11-10 15:29:11,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 15:29:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:11,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-10 15:29:11,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:11,495 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 [2024-11-10 15:29:11,736 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 15:29:11,736 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 [2024-11-10 15:29:11,842 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 [2024-11-10 15:29:11,847 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 [2024-11-10 15:29:12,006 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-10 15:29:12,007 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 [2024-11-10 15:29:12,012 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 [2024-11-10 15:29:12,220 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 [2024-11-10 15:29:12,399 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 [2024-11-10 15:29:12,403 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 [2024-11-10 15:29:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:29:12,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:12,841 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 [2024-11-10 15:29:12,851 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 [2024-11-10 15:29:12,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:29:12,977 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 [2024-11-10 15:29:13,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:29:13,188 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 [2024-11-10 15:29:13,193 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 [2024-11-10 15:29:13,203 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 [2024-11-10 15:29:13,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:29:13,218 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 [2024-11-10 15:29:13,225 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 15:29:13,229 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 [2024-11-10 15:29:13,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:29:13,239 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 [2024-11-10 15:29:13,243 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 15:29:13,244 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 [2024-11-10 15:29:13,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892801077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:13,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:29:13,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2024-11-10 15:29:13,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000554203] [2024-11-10 15:29:13,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:29:13,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-10 15:29:13,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-10 15:29:13,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=3148, Unknown=1, NotChecked=0, Total=3306 [2024-11-10 15:29:13,523 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) [2024-11-10 15:29:15,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:15,256 INFO L93 Difference]: Finished difference Result 224 states and 267 transitions. [2024-11-10 15:29:15,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 15:29:15,256 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 [2024-11-10 15:29:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:15,257 INFO L225 Difference]: With dead ends: 224 [2024-11-10 15:29:15,260 INFO L226 Difference]: Without dead ends: 224 [2024-11-10 15:29:15,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=315, Invalid=5234, Unknown=1, NotChecked=0, Total=5550 [2024-11-10 15:29:15,262 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, 0.9s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:15,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 1539 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-10 15:29:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-10 15:29:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 148. [2024-11-10 15:29:15,265 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) [2024-11-10 15:29:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 181 transitions. [2024-11-10 15:29:15,267 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 181 transitions. Word has length 41 [2024-11-10 15:29:15,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:15,267 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 181 transitions. [2024-11-10 15:29:15,267 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) [2024-11-10 15:29:15,268 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 181 transitions. [2024-11-10 15:29:15,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-10 15:29:15,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:15,268 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] [2024-11-10 15:29:15,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 15:29:15,469 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 [2024-11-10 15:29:15,469 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)] === [2024-11-10 15:29:15,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:15,469 INFO L85 PathProgramCache]: Analyzing trace with hash -657788099, now seen corresponding path program 1 times [2024-11-10 15:29:15,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:15,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968510117] [2024-11-10 15:29:15,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:15,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:15,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:15,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:15,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:15,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968510117] [2024-11-10 15:29:15,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968510117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:15,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511261753] [2024-11-10 15:29:15,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:15,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:15,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:15,924 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) [2024-11-10 15:29:15,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 15:29:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:16,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-10 15:29:16,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:16,101 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 [2024-11-10 15:29:16,190 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 15:29:16,190 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 11 treesize of output 11 [2024-11-10 15:29:16,241 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 [2024-11-10 15:29:16,339 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-10 15:29:16,339 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 [2024-11-10 15:29:16,490 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 [2024-11-10 15:29:16,492 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 [2024-11-10 15:29:16,574 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 [2024-11-10 15:29:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:29:16,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:16,601 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 [2024-11-10 15:29:16,603 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 [2024-11-10 15:29:16,613 INFO L349 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2024-11-10 15:29:16,614 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 [2024-11-10 15:29:16,617 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 [2024-11-10 15:29:16,625 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 [2024-11-10 15:29:16,630 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:29:16,630 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 [2024-11-10 15:29:16,632 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 [2024-11-10 15:29:16,635 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 [2024-11-10 15:29:16,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511261753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:16,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:29:16,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 34 [2024-11-10 15:29:16,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464515091] [2024-11-10 15:29:16,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:29:16,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-10 15:29:16,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:16,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-10 15:29:16,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1169, Unknown=2, NotChecked=138, Total=1406 [2024-11-10 15:29:16,694 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) [2024-11-10 15:29:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:17,490 INFO L93 Difference]: Finished difference Result 213 states and 259 transitions. [2024-11-10 15:29:17,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 15:29:17,491 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 [2024-11-10 15:29:17,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:17,491 INFO L225 Difference]: With dead ends: 213 [2024-11-10 15:29:17,492 INFO L226 Difference]: Without dead ends: 213 [2024-11-10 15:29:17,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=169, Invalid=1817, Unknown=2, NotChecked=174, Total=2162 [2024-11-10 15:29:17,493 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 [2024-11-10 15:29:17,493 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] [2024-11-10 15:29:17,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-10 15:29:17,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 148. [2024-11-10 15:29:17,495 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) [2024-11-10 15:29:17,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 181 transitions. [2024-11-10 15:29:17,496 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 181 transitions. Word has length 41 [2024-11-10 15:29:17,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:17,496 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 181 transitions. [2024-11-10 15:29:17,496 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) [2024-11-10 15:29:17,496 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 181 transitions. [2024-11-10 15:29:17,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-10 15:29:17,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:17,497 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] [2024-11-10 15:29:17,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 15:29:17,699 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 [2024-11-10 15:29:17,700 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)] === [2024-11-10 15:29:17,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:17,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1050020703, now seen corresponding path program 1 times [2024-11-10 15:29:17,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:17,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879325191] [2024-11-10 15:29:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:17,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:17,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:17,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:17,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:17,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879325191] [2024-11-10 15:29:17,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879325191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:17,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:17,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-10 15:29:17,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873896957] [2024-11-10 15:29:17,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:17,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 15:29:17,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:17,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 15:29:17,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:29:17,870 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) [2024-11-10 15:29:18,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:18,100 INFO L93 Difference]: Finished difference Result 170 states and 191 transitions. [2024-11-10 15:29:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 15:29:18,100 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 [2024-11-10 15:29:18,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:18,101 INFO L225 Difference]: With dead ends: 170 [2024-11-10 15:29:18,101 INFO L226 Difference]: Without dead ends: 170 [2024-11-10 15:29:18,102 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 [2024-11-10 15:29:18,102 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 [2024-11-10 15:29:18,102 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] [2024-11-10 15:29:18,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-10 15:29:18,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 151. [2024-11-10 15:29:18,108 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) [2024-11-10 15:29:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 184 transitions. [2024-11-10 15:29:18,108 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 184 transitions. Word has length 42 [2024-11-10 15:29:18,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:18,110 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 184 transitions. [2024-11-10 15:29:18,110 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) [2024-11-10 15:29:18,110 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 184 transitions. [2024-11-10 15:29:18,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-10 15:29:18,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:18,111 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] [2024-11-10 15:29:18,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 15:29:18,111 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)] === [2024-11-10 15:29:18,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:18,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1780466437, now seen corresponding path program 1 times [2024-11-10 15:29:18,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:18,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840428056] [2024-11-10 15:29:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:18,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:18,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:18,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:18,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:18,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840428056] [2024-11-10 15:29:18,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840428056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:18,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:18,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 15:29:18,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698677743] [2024-11-10 15:29:18,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:18,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:29:18,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:18,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:29:18,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:29:18,216 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) [2024-11-10 15:29:18,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:18,300 INFO L93 Difference]: Finished difference Result 165 states and 203 transitions. [2024-11-10 15:29:18,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:29:18,300 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 [2024-11-10 15:29:18,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:18,302 INFO L225 Difference]: With dead ends: 165 [2024-11-10 15:29:18,302 INFO L226 Difference]: Without dead ends: 165 [2024-11-10 15:29:18,302 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 [2024-11-10 15:29:18,302 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 [2024-11-10 15:29:18,302 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] [2024-11-10 15:29:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-10 15:29:18,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2024-11-10 15:29:18,305 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) [2024-11-10 15:29:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 200 transitions. [2024-11-10 15:29:18,306 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 200 transitions. Word has length 43 [2024-11-10 15:29:18,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:18,306 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 200 transitions. [2024-11-10 15:29:18,306 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) [2024-11-10 15:29:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 200 transitions. [2024-11-10 15:29:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-10 15:29:18,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:18,307 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] [2024-11-10 15:29:18,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 15:29:18,307 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)] === [2024-11-10 15:29:18,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:18,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1809096579, now seen corresponding path program 1 times [2024-11-10 15:29:18,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:18,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198874897] [2024-11-10 15:29:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:18,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:18,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:18,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:18,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:18,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198874897] [2024-11-10 15:29:18,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198874897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:18,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:18,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 15:29:18,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40770782] [2024-11-10 15:29:18,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:18,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 15:29:18,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:18,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 15:29:18,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:29:18,383 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) [2024-11-10 15:29:18,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:18,508 INFO L93 Difference]: Finished difference Result 166 states and 202 transitions. [2024-11-10 15:29:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:29:18,509 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 [2024-11-10 15:29:18,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:18,509 INFO L225 Difference]: With dead ends: 166 [2024-11-10 15:29:18,510 INFO L226 Difference]: Without dead ends: 166 [2024-11-10 15:29:18,510 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 [2024-11-10 15:29:18,510 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 [2024-11-10 15:29:18,510 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] [2024-11-10 15:29:18,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-10 15:29:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2024-11-10 15:29:18,513 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) [2024-11-10 15:29:18,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 199 transitions. [2024-11-10 15:29:18,513 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 199 transitions. Word has length 43 [2024-11-10 15:29:18,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:18,513 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 199 transitions. [2024-11-10 15:29:18,513 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) [2024-11-10 15:29:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 199 transitions. [2024-11-10 15:29:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-10 15:29:18,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:18,514 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] [2024-11-10 15:29:18,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 15:29:18,514 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)] === [2024-11-10 15:29:18,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:18,514 INFO L85 PathProgramCache]: Analyzing trace with hash 919942298, now seen corresponding path program 1 times [2024-11-10 15:29:18,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:18,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213583917] [2024-11-10 15:29:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:18,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:18,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:18,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:18,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213583917] [2024-11-10 15:29:18,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213583917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349621757] [2024-11-10 15:29:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:18,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:18,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:18,709 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) [2024-11-10 15:29:18,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 15:29:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:18,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:29:18,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:18,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:29:18,924 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 [2024-11-10 15:29:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:18,926 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:29:18,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349621757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:18,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:29:18,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 17 [2024-11-10 15:29:18,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716052615] [2024-11-10 15:29:18,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:18,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:29:18,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:18,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:29:18,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-10 15:29:18,928 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) [2024-11-10 15:29:19,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:19,024 INFO L93 Difference]: Finished difference Result 161 states and 198 transitions. [2024-11-10 15:29:19,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:29:19,025 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 [2024-11-10 15:29:19,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:19,025 INFO L225 Difference]: With dead ends: 161 [2024-11-10 15:29:19,025 INFO L226 Difference]: Without dead ends: 161 [2024-11-10 15:29:19,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:29:19,026 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 [2024-11-10 15:29:19,026 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] [2024-11-10 15:29:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-10 15:29:19,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-10 15:29:19,029 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) [2024-11-10 15:29:19,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 198 transitions. [2024-11-10 15:29:19,029 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 198 transitions. Word has length 45 [2024-11-10 15:29:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:19,030 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 198 transitions. [2024-11-10 15:29:19,030 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) [2024-11-10 15:29:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 198 transitions. [2024-11-10 15:29:19,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-10 15:29:19,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:19,030 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] [2024-11-10 15:29:19,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 15:29:19,234 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 [2024-11-10 15:29:19,234 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)] === [2024-11-10 15:29:19,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash 229488441, now seen corresponding path program 2 times [2024-11-10 15:29:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:19,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946285978] [2024-11-10 15:29:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:19,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:19,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:19,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:19,855 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:19,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:19,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946285978] [2024-11-10 15:29:19,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946285978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:19,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345639043] [2024-11-10 15:29:19,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:29:19,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:19,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:19,858 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) [2024-11-10 15:29:19,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 15:29:20,007 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:29:20,007 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:29:20,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-10 15:29:20,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:20,034 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 [2024-11-10 15:29:20,187 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 [2024-11-10 15:29:20,272 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 15:29:20,272 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 [2024-11-10 15:29:20,382 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 [2024-11-10 15:29:20,389 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 [2024-11-10 15:29:20,539 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-10 15:29:20,539 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 [2024-11-10 15:29:20,546 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 [2024-11-10 15:29:20,944 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 [2024-11-10 15:29:21,168 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 [2024-11-10 15:29:21,260 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-10 15:29:21,260 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 [2024-11-10 15:29:21,264 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 [2024-11-10 15:29:21,338 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:29:21,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:21,709 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 [2024-11-10 15:29:21,711 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 [2024-11-10 15:29:21,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:29:21,989 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 [2024-11-10 15:29:22,047 INFO L349 Elim1Store]: treesize reduction 11, result has 60.7 percent of original size [2024-11-10 15:29:22,047 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 [2024-11-10 15:29:23,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:29:23,449 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 [2024-11-10 15:29:23,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345639043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:23,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:29:23,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25] total 47 [2024-11-10 15:29:23,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436145381] [2024-11-10 15:29:23,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:29:23,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-10 15:29:23,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-10 15:29:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3600, Unknown=0, NotChecked=0, Total=3782 [2024-11-10 15:29:23,928 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) [2024-11-10 15:29:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:25,291 INFO L93 Difference]: Finished difference Result 183 states and 216 transitions. [2024-11-10 15:29:25,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 15:29:25,291 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 [2024-11-10 15:29:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:25,292 INFO L225 Difference]: With dead ends: 183 [2024-11-10 15:29:25,292 INFO L226 Difference]: Without dead ends: 183 [2024-11-10 15:29:25,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=293, Invalid=4677, Unknown=0, NotChecked=0, Total=4970 [2024-11-10 15:29:25,294 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 279 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2024-11-10 15:29:25,294 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] [2024-11-10 15:29:25,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-10 15:29:25,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 161. [2024-11-10 15:29:25,296 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) [2024-11-10 15:29:25,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 197 transitions. [2024-11-10 15:29:25,296 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 197 transitions. Word has length 47 [2024-11-10 15:29:25,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:25,297 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 197 transitions. [2024-11-10 15:29:25,297 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) [2024-11-10 15:29:25,297 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 197 transitions. [2024-11-10 15:29:25,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-10 15:29:25,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:25,297 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] [2024-11-10 15:29:25,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 15:29:25,501 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 [2024-11-10 15:29:25,502 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)] === [2024-11-10 15:29:25,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:25,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1450038214, now seen corresponding path program 1 times [2024-11-10 15:29:25,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:25,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728456667] [2024-11-10 15:29:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:25,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:25,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:25,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:25,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:25,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728456667] [2024-11-10 15:29:25,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728456667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:25,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:29:25,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:29:25,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308990541] [2024-11-10 15:29:25,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:25,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:29:25,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:25,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:29:25,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:29:25,559 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) [2024-11-10 15:29:25,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:25,617 INFO L93 Difference]: Finished difference Result 159 states and 194 transitions. [2024-11-10 15:29:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:29:25,618 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 [2024-11-10 15:29:25,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:25,619 INFO L225 Difference]: With dead ends: 159 [2024-11-10 15:29:25,619 INFO L226 Difference]: Without dead ends: 159 [2024-11-10 15:29:25,619 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 [2024-11-10 15:29:25,620 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 72 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-11-10 15:29:25,620 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] [2024-11-10 15:29:25,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-10 15:29:25,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-10 15:29:25,622 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) [2024-11-10 15:29:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 194 transitions. [2024-11-10 15:29:25,622 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 194 transitions. Word has length 49 [2024-11-10 15:29:25,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:25,623 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 194 transitions. [2024-11-10 15:29:25,623 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) [2024-11-10 15:29:25,623 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 194 transitions. [2024-11-10 15:29:25,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-10 15:29:25,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:25,623 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] [2024-11-10 15:29:25,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-10 15:29:25,623 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)] === [2024-11-10 15:29:25,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:25,623 INFO L85 PathProgramCache]: Analyzing trace with hash 488762934, now seen corresponding path program 1 times [2024-11-10 15:29:25,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:25,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134760840] [2024-11-10 15:29:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:25,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:25,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:25,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:25,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:25,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134760840] [2024-11-10 15:29:25,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134760840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:25,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108661566] [2024-11-10 15:29:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:25,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:25,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:25,712 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) [2024-11-10 15:29:25,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 15:29:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:25,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-10 15:29:25,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:25,900 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 [2024-11-10 15:29:26,037 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 [2024-11-10 15:29:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 15:29:26,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:29:26,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108661566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:26,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:29:26,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 17 [2024-11-10 15:29:26,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030592178] [2024-11-10 15:29:26,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:26,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 15:29:26,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:26,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 15:29:26,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-11-10 15:29:26,041 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) [2024-11-10 15:29:26,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:26,302 INFO L93 Difference]: Finished difference Result 199 states and 238 transitions. [2024-11-10 15:29:26,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 15:29:26,303 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 [2024-11-10 15:29:26,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:26,304 INFO L225 Difference]: With dead ends: 199 [2024-11-10 15:29:26,304 INFO L226 Difference]: Without dead ends: 199 [2024-11-10 15:29:26,305 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 [2024-11-10 15:29:26,306 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 [2024-11-10 15:29:26,306 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] [2024-11-10 15:29:26,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-10 15:29:26,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 175. [2024-11-10 15:29:26,308 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) [2024-11-10 15:29:26,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 216 transitions. [2024-11-10 15:29:26,309 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 216 transitions. Word has length 49 [2024-11-10 15:29:26,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:26,310 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 216 transitions. [2024-11-10 15:29:26,310 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) [2024-11-10 15:29:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 216 transitions. [2024-11-10 15:29:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-10 15:29:26,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:26,311 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] [2024-11-10 15:29:26,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 15:29:26,514 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 [2024-11-10 15:29:26,514 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)] === [2024-11-10 15:29:26,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash 488762935, now seen corresponding path program 1 times [2024-11-10 15:29:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:26,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485864082] [2024-11-10 15:29:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:26,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:26,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:26,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:26,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485864082] [2024-11-10 15:29:26,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485864082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:26,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594414256] [2024-11-10 15:29:26,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:26,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:26,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:26,844 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) [2024-11-10 15:29:26,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 15:29:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:27,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-10 15:29:27,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:27,063 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 [2024-11-10 15:29:27,364 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 17 treesize of output 9 [2024-11-10 15:29:27,401 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:29:27,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:27,600 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 [2024-11-10 15:29:27,601 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 [2024-11-10 15:29:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:29:27,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594414256] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:27,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:29:27,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 15] total 41 [2024-11-10 15:29:27,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85731142] [2024-11-10 15:29:27,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:27,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 15:29:27,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:27,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 15:29:27,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2024-11-10 15:29:27,812 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) [2024-11-10 15:29:28,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:28,276 INFO L93 Difference]: Finished difference Result 189 states and 216 transitions. [2024-11-10 15:29:28,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 15:29:28,276 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 [2024-11-10 15:29:28,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:28,277 INFO L225 Difference]: With dead ends: 189 [2024-11-10 15:29:28,277 INFO L226 Difference]: Without dead ends: 189 [2024-11-10 15:29:28,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=2160, Unknown=0, NotChecked=0, Total=2352 [2024-11-10 15:29:28,278 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 [2024-11-10 15:29:28,278 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] [2024-11-10 15:29:28,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-10 15:29:28,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 175. [2024-11-10 15:29:28,281 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) [2024-11-10 15:29:28,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 212 transitions. [2024-11-10 15:29:28,281 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 212 transitions. Word has length 49 [2024-11-10 15:29:28,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:28,281 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 212 transitions. [2024-11-10 15:29:28,281 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) [2024-11-10 15:29:28,281 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 212 transitions. [2024-11-10 15:29:28,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-10 15:29:28,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:28,282 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] [2024-11-10 15:29:28,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 15:29:28,482 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 [2024-11-10 15:29:28,482 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)] === [2024-11-10 15:29:28,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:28,483 INFO L85 PathProgramCache]: Analyzing trace with hash 692616535, now seen corresponding path program 1 times [2024-11-10 15:29:28,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:28,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138808691] [2024-11-10 15:29:28,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:28,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:28,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:28,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:28,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:28,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138808691] [2024-11-10 15:29:28,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138808691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:28,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348724453] [2024-11-10 15:29:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:28,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:28,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:28,558 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) [2024-11-10 15:29:28,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 15:29:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:28,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 15:29:28,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:28,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:28,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348724453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:29:28,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:29:28,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-10 15:29:28,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738084454] [2024-11-10 15:29:28,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:29:28,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:29:28,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:28,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:29:28,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:29:28,843 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) [2024-11-10 15:29:28,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:28,891 INFO L93 Difference]: Finished difference Result 210 states and 245 transitions. [2024-11-10 15:29:28,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:29:28,891 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 [2024-11-10 15:29:28,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:28,892 INFO L225 Difference]: With dead ends: 210 [2024-11-10 15:29:28,892 INFO L226 Difference]: Without dead ends: 210 [2024-11-10 15:29:28,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:29:28,893 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:28,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 219 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:29:28,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-10 15:29:28,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 201. [2024-11-10 15:29:28,895 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) [2024-11-10 15:29:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 245 transitions. [2024-11-10 15:29:28,896 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 245 transitions. Word has length 52 [2024-11-10 15:29:28,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:28,896 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 245 transitions. [2024-11-10 15:29:28,896 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) [2024-11-10 15:29:28,896 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 245 transitions. [2024-11-10 15:29:28,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-10 15:29:28,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:28,897 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] [2024-11-10 15:29:28,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 15:29:29,097 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 [2024-11-10 15:29:29,098 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)] === [2024-11-10 15:29:29,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:29,098 INFO L85 PathProgramCache]: Analyzing trace with hash 696495705, now seen corresponding path program 1 times [2024-11-10 15:29:29,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:29,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620680915] [2024-11-10 15:29:29,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:29,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:29,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:29,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:29,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:29,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620680915] [2024-11-10 15:29:29,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620680915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:29,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989646658] [2024-11-10 15:29:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:29,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:29,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:29,700 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) [2024-11-10 15:29:29,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 15:29:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:29,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-10 15:29:29,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:29,876 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 [2024-11-10 15:29:29,936 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 15:29:29,936 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 [2024-11-10 15:29:29,943 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 [2024-11-10 15:29:29,990 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-10 15:29:29,990 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 [2024-11-10 15:29:30,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:29:30,103 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 [2024-11-10 15:29:30,204 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 [2024-11-10 15:29:30,228 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:29:30,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:30,382 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 [2024-11-10 15:29:30,410 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 [2024-11-10 15:29:30,460 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 [2024-11-10 15:29:30,464 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:29:30,464 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 [2024-11-10 15:29:30,468 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:29:30,468 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 [2024-11-10 15:29:30,470 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 [2024-11-10 15:29:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:29:30,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989646658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:29:30,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:29:30,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 50 [2024-11-10 15:29:30,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231947292] [2024-11-10 15:29:30,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:29:30,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-10 15:29:30,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:30,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-10 15:29:30,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2188, Unknown=6, NotChecked=94, Total=2450 [2024-11-10 15:29:30,836 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) [2024-11-10 15:29:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:31,646 INFO L93 Difference]: Finished difference Result 222 states and 264 transitions. [2024-11-10 15:29:31,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 15:29:31,646 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 [2024-11-10 15:29:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:31,647 INFO L225 Difference]: With dead ends: 222 [2024-11-10 15:29:31,647 INFO L226 Difference]: Without dead ends: 218 [2024-11-10 15:29:31,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=267, Invalid=3037, Unknown=6, NotChecked=112, Total=3422 [2024-11-10 15:29:31,648 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 50 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:31,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1448 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1181 Invalid, 0 Unknown, 77 Unchecked, 0.6s Time] [2024-11-10 15:29:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-10 15:29:31,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 201. [2024-11-10 15:29:31,657 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) [2024-11-10 15:29:31,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 244 transitions. [2024-11-10 15:29:31,657 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 244 transitions. Word has length 52 [2024-11-10 15:29:31,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:31,657 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 244 transitions. [2024-11-10 15:29:31,657 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) [2024-11-10 15:29:31,657 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 244 transitions. [2024-11-10 15:29:31,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-10 15:29:31,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:31,658 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] [2024-11-10 15:29:31,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 15:29:31,858 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 [2024-11-10 15:29:31,859 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)] === [2024-11-10 15:29:31,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:31,859 INFO L85 PathProgramCache]: Analyzing trace with hash 797456992, now seen corresponding path program 1 times [2024-11-10 15:29:31,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:31,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206182511] [2024-11-10 15:29:31,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:31,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:32,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:32,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:32,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:32,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206182511] [2024-11-10 15:29:32,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206182511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:32,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477014255] [2024-11-10 15:29:32,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:32,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:32,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:32,361 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) [2024-11-10 15:29:32,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 15:29:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:32,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-10 15:29:32,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:32,556 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 [2024-11-10 15:29:32,626 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 [2024-11-10 15:29:32,721 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 15:29:32,721 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 [2024-11-10 15:29:32,798 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 [2024-11-10 15:29:32,875 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-10 15:29:32,875 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 [2024-11-10 15:29:33,183 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 [2024-11-10 15:29:33,264 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 [2024-11-10 15:29:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:29:33,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:33,567 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 [2024-11-10 15:29:33,569 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 [2024-11-10 15:29:33,587 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 [2024-11-10 15:29:33,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:29:33,645 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 [2024-11-10 15:29:33,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2024-11-10 15:29:33,651 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 [2024-11-10 15:29:33,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477014255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:33,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:29:33,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24] total 41 [2024-11-10 15:29:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666834420] [2024-11-10 15:29:33,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:29:33,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-10 15:29:33,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-10 15:29:33,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2196, Unknown=19, NotChecked=94, Total=2450 [2024-11-10 15:29:33,718 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) [2024-11-10 15:29:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:34,696 INFO L93 Difference]: Finished difference Result 220 states and 263 transitions. [2024-11-10 15:29:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 15:29:34,697 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 [2024-11-10 15:29:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:34,697 INFO L225 Difference]: With dead ends: 220 [2024-11-10 15:29:34,698 INFO L226 Difference]: Without dead ends: 220 [2024-11-10 15:29:34,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 50 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=292, Invalid=3474, Unknown=20, NotChecked=120, Total=3906 [2024-11-10 15:29:34,699 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:34,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 971 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 15:29:34,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-10 15:29:34,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 202. [2024-11-10 15:29:34,704 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) [2024-11-10 15:29:34,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 245 transitions. [2024-11-10 15:29:34,704 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 245 transitions. Word has length 52 [2024-11-10 15:29:34,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:34,704 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 245 transitions. [2024-11-10 15:29:34,704 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) [2024-11-10 15:29:34,705 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 245 transitions. [2024-11-10 15:29:34,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-10 15:29:34,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:34,705 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] [2024-11-10 15:29:34,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 15:29:34,909 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 [2024-11-10 15:29:34,910 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)] === [2024-11-10 15:29:34,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:34,910 INFO L85 PathProgramCache]: Analyzing trace with hash -531464381, now seen corresponding path program 3 times [2024-11-10 15:29:34,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:34,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752266975] [2024-11-10 15:29:34,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:34,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:34,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:34,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:34,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-10 15:29:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-10 15:29:34,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:34,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752266975] [2024-11-10 15:29:34,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752266975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:34,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050443497] [2024-11-10 15:29:34,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:29:34,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:34,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:34,987 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) [2024-11-10 15:29:34,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 15:29:35,164 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 15:29:35,164 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:29:35,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 15:29:35,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:35,195 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:29:35,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050443497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:35,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:29:35,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-10 15:29:35,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153951921] [2024-11-10 15:29:35,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:35,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:29:35,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:35,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:29:35,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:29:35,197 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) [2024-11-10 15:29:35,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:35,214 INFO L93 Difference]: Finished difference Result 163 states and 192 transitions. [2024-11-10 15:29:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:29:35,214 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 [2024-11-10 15:29:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:35,215 INFO L225 Difference]: With dead ends: 163 [2024-11-10 15:29:35,215 INFO L226 Difference]: Without dead ends: 163 [2024-11-10 15:29:35,215 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 [2024-11-10 15:29:35,216 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 [2024-11-10 15:29:35,216 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] [2024-11-10 15:29:35,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-10 15:29:35,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-11-10 15:29:35,218 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) [2024-11-10 15:29:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 192 transitions. [2024-11-10 15:29:35,219 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 192 transitions. Word has length 54 [2024-11-10 15:29:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:35,219 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 192 transitions. [2024-11-10 15:29:35,219 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) [2024-11-10 15:29:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 192 transitions. [2024-11-10 15:29:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-10 15:29:35,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:35,219 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] [2024-11-10 15:29:35,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 15:29:35,420 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 [2024-11-10 15:29:35,420 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)] === [2024-11-10 15:29:35,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:35,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1853008287, now seen corresponding path program 1 times [2024-11-10 15:29:35,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:35,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360734920] [2024-11-10 15:29:35,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:35,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:35,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:35,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:35,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:35,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360734920] [2024-11-10 15:29:35,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360734920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:35,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974411828] [2024-11-10 15:29:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:35,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:35,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:35,598 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) [2024-11-10 15:29:35,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 15:29:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:35,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-10 15:29:35,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:36,226 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 [2024-11-10 15:29:36,296 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 [2024-11-10 15:29:36,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 15:29:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 15:29:36,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:36,477 INFO L349 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2024-11-10 15:29:36,477 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 [2024-11-10 15:29:36,483 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 [2024-11-10 15:29:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:36,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974411828] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:29:36,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:29:36,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 9] total 34 [2024-11-10 15:29:36,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596154875] [2024-11-10 15:29:36,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:29:36,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 15:29:36,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:36,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 15:29:36,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 15:29:36,509 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) [2024-11-10 15:29:37,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:37,294 INFO L93 Difference]: Finished difference Result 198 states and 238 transitions. [2024-11-10 15:29:37,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 15:29:37,295 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 [2024-11-10 15:29:37,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:37,295 INFO L225 Difference]: With dead ends: 198 [2024-11-10 15:29:37,295 INFO L226 Difference]: Without dead ends: 198 [2024-11-10 15:29:37,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=251, Invalid=2101, Unknown=0, NotChecked=0, Total=2352 [2024-11-10 15:29:37,296 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 267 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2024-11-10 15:29:37,296 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] [2024-11-10 15:29:37,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-10 15:29:37,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 184. [2024-11-10 15:29:37,299 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) [2024-11-10 15:29:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 222 transitions. [2024-11-10 15:29:37,299 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 222 transitions. Word has length 54 [2024-11-10 15:29:37,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:37,299 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 222 transitions. [2024-11-10 15:29:37,299 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) [2024-11-10 15:29:37,299 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 222 transitions. [2024-11-10 15:29:37,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-10 15:29:37,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:37,300 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] [2024-11-10 15:29:37,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-10 15:29:37,500 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 [2024-11-10 15:29:37,501 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)] === [2024-11-10 15:29:37,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1577148363, now seen corresponding path program 1 times [2024-11-10 15:29:37,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:37,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356761101] [2024-11-10 15:29:37,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:37,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:37,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:37,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:37,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:37,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356761101] [2024-11-10 15:29:37,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356761101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:37,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249883453] [2024-11-10 15:29:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:37,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:37,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:37,615 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) [2024-11-10 15:29:37,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 15:29:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:37,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:29:37,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:37,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:29:37,869 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 [2024-11-10 15:29:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:29:37,871 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:29:37,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249883453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:37,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:29:37,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 9 [2024-11-10 15:29:37,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038272002] [2024-11-10 15:29:37,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:37,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:29:37,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:37,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:29:37,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:29:37,873 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) [2024-11-10 15:29:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:37,953 INFO L93 Difference]: Finished difference Result 183 states and 219 transitions. [2024-11-10 15:29:37,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:29:37,954 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 [2024-11-10 15:29:37,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:37,954 INFO L225 Difference]: With dead ends: 183 [2024-11-10 15:29:37,955 INFO L226 Difference]: Without dead ends: 183 [2024-11-10 15:29:37,955 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 [2024-11-10 15:29:37,955 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 [2024-11-10 15:29:37,958 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] [2024-11-10 15:29:37,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-10 15:29:37,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-10 15:29:37,960 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) [2024-11-10 15:29:37,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 219 transitions. [2024-11-10 15:29:37,961 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 219 transitions. Word has length 55 [2024-11-10 15:29:37,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:37,961 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 219 transitions. [2024-11-10 15:29:37,961 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) [2024-11-10 15:29:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 219 transitions. [2024-11-10 15:29:37,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-10 15:29:37,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:37,961 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] [2024-11-10 15:29:37,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-10 15:29:38,162 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 [2024-11-10 15:29:38,163 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)] === [2024-11-10 15:29:38,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:38,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1646959004, now seen corresponding path program 1 times [2024-11-10 15:29:38,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:38,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902522288] [2024-11-10 15:29:38,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:38,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:38,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:38,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:38,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:38,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902522288] [2024-11-10 15:29:38,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902522288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:38,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786026833] [2024-11-10 15:29:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:38,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:38,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:38,717 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) [2024-11-10 15:29:38,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 15:29:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:38,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-10 15:29:38,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:39,187 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 7 treesize of output 3 [2024-11-10 15:29:39,257 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 [2024-11-10 15:29:39,375 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 [2024-11-10 15:29:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:29:39,378 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:29:39,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786026833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:29:39,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:29:39,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [24] total 39 [2024-11-10 15:29:39,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522808166] [2024-11-10 15:29:39,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:29:39,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 15:29:39,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:39,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 15:29:39,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1470, Unknown=0, NotChecked=0, Total=1560 [2024-11-10 15:29:39,380 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) [2024-11-10 15:29:39,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:39,894 INFO L93 Difference]: Finished difference Result 201 states and 244 transitions. [2024-11-10 15:29:39,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 15:29:39,894 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 [2024-11-10 15:29:39,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:39,895 INFO L225 Difference]: With dead ends: 201 [2024-11-10 15:29:39,895 INFO L226 Difference]: Without dead ends: 201 [2024-11-10 15:29:39,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=195, Invalid=2355, Unknown=0, NotChecked=0, Total=2550 [2024-11-10 15:29:39,896 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 [2024-11-10 15:29:39,896 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] [2024-11-10 15:29:39,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-10 15:29:39,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2024-11-10 15:29:39,899 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) [2024-11-10 15:29:39,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 242 transitions. [2024-11-10 15:29:39,900 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 242 transitions. Word has length 56 [2024-11-10 15:29:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:39,900 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 242 transitions. [2024-11-10 15:29:39,902 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) [2024-11-10 15:29:39,902 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 242 transitions. [2024-11-10 15:29:39,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-10 15:29:39,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:39,903 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] [2024-11-10 15:29:39,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-10 15:29:40,103 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 [2024-11-10 15:29:40,103 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)] === [2024-11-10 15:29:40,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:40,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1334194046, now seen corresponding path program 1 times [2024-11-10 15:29:40,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:40,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104477085] [2024-11-10 15:29:40,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:40,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:40,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:40,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:40,287 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:40,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:40,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104477085] [2024-11-10 15:29:40,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104477085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:40,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813388373] [2024-11-10 15:29:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:40,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:40,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:40,289 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) [2024-11-10 15:29:40,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 15:29:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:40,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 15:29:40,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:40,504 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 [2024-11-10 15:29:40,507 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 [2024-11-10 15:29:40,529 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 [2024-11-10 15:29:40,530 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 [2024-11-10 15:29:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:40,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:40,574 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 [2024-11-10 15:29:40,575 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 [2024-11-10 15:29:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:40,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813388373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:29:40,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:29:40,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 10 [2024-11-10 15:29:40,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800882098] [2024-11-10 15:29:40,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:29:40,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 15:29:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:40,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 15:29:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:29:40,584 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) [2024-11-10 15:29:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:40,830 INFO L93 Difference]: Finished difference Result 190 states and 228 transitions. [2024-11-10 15:29:40,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 15:29:40,830 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 [2024-11-10 15:29:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:40,831 INFO L225 Difference]: With dead ends: 190 [2024-11-10 15:29:40,831 INFO L226 Difference]: Without dead ends: 190 [2024-11-10 15:29:40,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-10 15:29:40,831 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:40,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 327 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:29:40,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-10 15:29:40,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-11-10 15:29:40,834 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) [2024-11-10 15:29:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 228 transitions. [2024-11-10 15:29:40,834 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 228 transitions. Word has length 58 [2024-11-10 15:29:40,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:40,835 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 228 transitions. [2024-11-10 15:29:40,835 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) [2024-11-10 15:29:40,835 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 228 transitions. [2024-11-10 15:29:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-10 15:29:40,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:40,835 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] [2024-11-10 15:29:40,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-10 15:29:41,036 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 [2024-11-10 15:29:41,037 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)] === [2024-11-10 15:29:41,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:41,037 INFO L85 PathProgramCache]: Analyzing trace with hash -689787128, now seen corresponding path program 1 times [2024-11-10 15:29:41,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:41,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965658062] [2024-11-10 15:29:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:41,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:41,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:41,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:29:41,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:41,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965658062] [2024-11-10 15:29:41,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965658062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:41,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118695066] [2024-11-10 15:29:41,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:41,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:41,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:41,175 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) [2024-11-10 15:29:41,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 15:29:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:41,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-10 15:29:41,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:41,667 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 [2024-11-10 15:29:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 15:29:41,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:41,681 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-11-10 15:29:41,681 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 [2024-11-10 15:29:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:29:41,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118695066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:29:41,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:29:41,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 8] total 21 [2024-11-10 15:29:41,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627685790] [2024-11-10 15:29:41,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:29:41,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 15:29:41,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 15:29:41,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2024-11-10 15:29:41,734 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) [2024-11-10 15:29:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:42,054 INFO L93 Difference]: Finished difference Result 281 states and 334 transitions. [2024-11-10 15:29:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 15:29:42,055 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 [2024-11-10 15:29:42,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:42,056 INFO L225 Difference]: With dead ends: 281 [2024-11-10 15:29:42,056 INFO L226 Difference]: Without dead ends: 281 [2024-11-10 15:29:42,056 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 [2024-11-10 15:29:42,056 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:42,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 566 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:29:42,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-10 15:29:42,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 258. [2024-11-10 15:29:42,059 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) [2024-11-10 15:29:42,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 318 transitions. [2024-11-10 15:29:42,060 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 318 transitions. Word has length 64 [2024-11-10 15:29:42,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:42,060 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 318 transitions. [2024-11-10 15:29:42,060 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) [2024-11-10 15:29:42,060 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 318 transitions. [2024-11-10 15:29:42,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-10 15:29:42,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:42,060 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] [2024-11-10 15:29:42,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-10 15:29:42,264 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 [2024-11-10 15:29:42,264 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)] === [2024-11-10 15:29:42,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:42,265 INFO L85 PathProgramCache]: Analyzing trace with hash -27382076, now seen corresponding path program 1 times [2024-11-10 15:29:42,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:42,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296416010] [2024-11-10 15:29:42,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:42,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:42,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:42,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:29:42,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:42,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296416010] [2024-11-10 15:29:42,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296416010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:42,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334403317] [2024-11-10 15:29:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:42,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:42,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:42,562 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) [2024-11-10 15:29:42,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-10 15:29:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:42,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-10 15:29:42,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:43,615 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-10 15:29:43,615 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 [2024-11-10 15:29:43,620 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 [2024-11-10 15:29:43,831 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 [2024-11-10 15:29:43,886 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 [2024-11-10 15:29:43,928 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:29:43,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:29:43,960 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 [2024-11-10 15:29:44,129 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-10 15:29:44,129 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 [2024-11-10 15:29:44,277 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 [2024-11-10 15:29:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:29:44,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334403317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:29:44,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:29:44,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 27, 19] total 48 [2024-11-10 15:29:44,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082438909] [2024-11-10 15:29:44,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:29:44,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-10 15:29:44,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:29:44,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-10 15:29:44,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1991, Unknown=0, NotChecked=0, Total=2256 [2024-11-10 15:29:44,363 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) [2024-11-10 15:29:45,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:29:45,223 INFO L93 Difference]: Finished difference Result 179 states and 193 transitions. [2024-11-10 15:29:45,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 15:29:45,223 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 [2024-11-10 15:29:45,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:29:45,224 INFO L225 Difference]: With dead ends: 179 [2024-11-10 15:29:45,224 INFO L226 Difference]: Without dead ends: 179 [2024-11-10 15:29:45,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2024-11-10 15:29:45,225 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 157 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 15:29:45,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1202 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 15:29:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-10 15:29:45,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 153. [2024-11-10 15:29:45,227 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) [2024-11-10 15:29:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2024-11-10 15:29:45,227 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 70 [2024-11-10 15:29:45,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:29:45,228 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2024-11-10 15:29:45,228 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) [2024-11-10 15:29:45,228 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2024-11-10 15:29:45,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-10 15:29:45,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:29:45,228 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] [2024-11-10 15:29:45,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-10 15:29:45,432 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 [2024-11-10 15:29:45,433 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)] === [2024-11-10 15:29:45,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:29:45,433 INFO L85 PathProgramCache]: Analyzing trace with hash -772869615, now seen corresponding path program 1 times [2024-11-10 15:29:45,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:29:45,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654532827] [2024-11-10 15:29:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:45,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:29:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:46,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:29:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:47,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-10 15:29:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:47,083 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:29:47,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:29:47,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654532827] [2024-11-10 15:29:47,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654532827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:29:47,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354244665] [2024-11-10 15:29:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:29:47,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:29:47,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:29:47,086 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) [2024-11-10 15:29:47,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-10 15:29:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:29:47,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-10 15:29:47,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:29:47,357 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 [2024-11-10 15:29:47,875 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 [2024-11-10 15:29:48,116 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-10 15:29:48,116 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 [2024-11-10 15:29:49,967 INFO L349 Elim1Store]: treesize reduction 36, result has 57.1 percent of original size [2024-11-10 15:29:49,968 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 [2024-11-10 15:30:02,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:30:02,347 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