./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-simple/sll2n_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/sll2n_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 b3d7899c651fa61cfb9cf623e0f4ceb470fe32eb0d0272d2277c965ed07c2f88 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 15:30:21,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:30:21,713 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 15:30:21,719 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:30:21,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:30:21,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:30:21,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:30:21,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:30:21,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:30:21,754 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:30:21,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:30:21,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:30:21,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:30:21,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:30:21,756 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:30:21,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:30:21,757 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 15:30:21,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:30:21,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 15:30:21,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:30:21,761 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:30:21,764 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:30:21,765 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:30:21,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:30:21,765 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:30:21,765 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:30:21,766 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:30:21,766 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 15:30:21,766 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:30:21,766 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:30:21,767 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:30:21,767 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:30:21,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:30:21,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:30:21,769 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:30:21,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:30:21,770 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:30:21,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:30:21,770 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:30:21,770 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:30:21,771 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:30:21,771 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:30:21,771 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3d7899c651fa61cfb9cf623e0f4ceb470fe32eb0d0272d2277c965ed07c2f88 [2024-11-10 15:30:22,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:30:22,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:30:22,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:30:22,092 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:30:22,093 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:30:22,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i [2024-11-10 15:30:23,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:30:23,789 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:30:23,789 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i [2024-11-10 15:30:23,803 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b13e5490/dd9987cc5e5a4438bbeb82e3da84ef03/FLAG7f2b5863c [2024-11-10 15:30:24,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b13e5490/dd9987cc5e5a4438bbeb82e3da84ef03 [2024-11-10 15:30:24,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:30:24,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:30:24,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:30:24,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:30:24,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:30:24,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f2e960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24, skipping insertion in model container [2024-11-10 15:30:24,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,195 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:30:24,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:30:24,520 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:30:24,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:30:24,612 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:30:24,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24 WrapperNode [2024-11-10 15:30:24,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:30:24,614 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:30:24,614 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:30:24,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:30:24,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,657 INFO L138 Inliner]: procedures = 126, calls = 31, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 108 [2024-11-10 15:30:24,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:30:24,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:30:24,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:30:24,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:30:24,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,673 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,699 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 7, 6]. 47 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 5 writes are split as follows [0, 4, 1]. [2024-11-10 15:30:24,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,711 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:30:24,727 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:30:24,729 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:30:24,730 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:30:24,731 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24" (1/1) ... [2024-11-10 15:30:24,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:30:24,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:24,762 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 15:30:24,764 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 15:30:24,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 15:30:24,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 15:30:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 15:30:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 15:30:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 15:30:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 15:30:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 15:30:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 15:30:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 15:30:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 15:30:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 15:30:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 15:30:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 15:30:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 15:30:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-10 15:30:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-10 15:30:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 15:30:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 15:30:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 15:30:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:30:24,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:30:24,947 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:30:24,950 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:30:25,240 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 15:30:25,241 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L610: 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 15:30:25,292 INFO L? ?]: Removed 83 outVars from TransFormulas that were not future-live. [2024-11-10 15:30:25,292 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:30:25,307 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:30:25,307 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:30:25,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:30:25 BoogieIcfgContainer [2024-11-10 15:30:25,308 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:30:25,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:30:25,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:30:25,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:30:25,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:30:24" (1/3) ... [2024-11-10 15:30:25,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b5bde4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:30:25, skipping insertion in model container [2024-11-10 15:30:25,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:30:24" (2/3) ... [2024-11-10 15:30:25,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b5bde4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:30:25, skipping insertion in model container [2024-11-10 15:30:25,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:30:25" (3/3) ... [2024-11-10 15:30:25,317 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all_reverse.i [2024-11-10 15:30:25,345 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:30:25,345 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-10 15:30:25,397 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:30:25,404 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;@5035a996, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:30:25,405 INFO L334 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2024-11-10 15:30:25,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 48 states have (on average 1.875) internal successors, (90), 80 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-10 15:30:25,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:25,420 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 15:30:25,421 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:25,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:25,427 INFO L85 PathProgramCache]: Analyzing trace with hash -331801191, now seen corresponding path program 1 times [2024-11-10 15:30:25,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:25,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642950864] [2024-11-10 15:30:25,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:25,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:25,683 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 15:30:25,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:25,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642950864] [2024-11-10 15:30:25,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642950864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:25,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:30:25,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:30:25,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990779768] [2024-11-10 15:30:25,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:25,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:30:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:25,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:30:25,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:30:25,719 INFO L87 Difference]: Start difference. First operand has 81 states, 48 states have (on average 1.875) internal successors, (90), 80 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:25,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:25,815 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2024-11-10 15:30:25,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:30:25,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-10 15:30:25,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:25,826 INFO L225 Difference]: With dead ends: 78 [2024-11-10 15:30:25,826 INFO L226 Difference]: Without dead ends: 74 [2024-11-10 15:30:25,828 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 15:30:25,833 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 2 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:25,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 116 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:30:25,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-10 15:30:25,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-10 15:30:25,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 44 states have (on average 1.75) internal successors, (77), 73 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2024-11-10 15:30:25,872 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 6 [2024-11-10 15:30:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:25,872 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2024-11-10 15:30:25,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2024-11-10 15:30:25,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-10 15:30:25,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:25,873 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 15:30:25,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:30:25,874 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:25,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:25,874 INFO L85 PathProgramCache]: Analyzing trace with hash -331801190, now seen corresponding path program 1 times [2024-11-10 15:30:25,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:25,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317777138] [2024-11-10 15:30:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:25,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:26,018 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 15:30:26,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:26,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317777138] [2024-11-10 15:30:26,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317777138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:26,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:30:26,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:30:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682098468] [2024-11-10 15:30:26,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:26,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:30:26,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:26,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:30:26,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:30:26,027 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:26,091 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2024-11-10 15:30:26,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:30:26,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-10 15:30:26,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:26,093 INFO L225 Difference]: With dead ends: 72 [2024-11-10 15:30:26,094 INFO L226 Difference]: Without dead ends: 72 [2024-11-10 15:30:26,094 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 15:30:26,095 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 2 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:26,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 118 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:30:26,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-10 15:30:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-10 15:30:26,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 71 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2024-11-10 15:30:26,108 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 6 [2024-11-10 15:30:26,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:26,109 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2024-11-10 15:30:26,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:26,110 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2024-11-10 15:30:26,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 15:30:26,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:26,111 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:26,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:30:26,112 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:26,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:26,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2043758405, now seen corresponding path program 1 times [2024-11-10 15:30:26,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:26,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260657750] [2024-11-10 15:30:26,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:26,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:26,210 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 15:30:26,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:26,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260657750] [2024-11-10 15:30:26,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260657750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:26,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:30:26,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:30:26,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539218695] [2024-11-10 15:30:26,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:26,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:30:26,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:26,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:30:26,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:30:26,213 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:26,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:26,236 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2024-11-10 15:30:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:30:26,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-10 15:30:26,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:26,238 INFO L225 Difference]: With dead ends: 83 [2024-11-10 15:30:26,238 INFO L226 Difference]: Without dead ends: 83 [2024-11-10 15:30:26,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:30:26,239 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 9 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:26,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:30:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-10 15:30:26,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2024-11-10 15:30:26,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 46 states have (on average 1.673913043478261) internal successors, (77), 73 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:26,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2024-11-10 15:30:26,250 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 9 [2024-11-10 15:30:26,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:26,251 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2024-11-10 15:30:26,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2024-11-10 15:30:26,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-10 15:30:26,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:26,252 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:26,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 15:30:26,252 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:26,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:26,253 INFO L85 PathProgramCache]: Analyzing trace with hash -924257547, now seen corresponding path program 1 times [2024-11-10 15:30:26,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:26,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319295488] [2024-11-10 15:30:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:26,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:26,375 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 15:30:26,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:26,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319295488] [2024-11-10 15:30:26,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319295488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:26,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:30:26,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:30:26,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740105827] [2024-11-10 15:30:26,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:26,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:30:26,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:26,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:30:26,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:30:26,377 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:26,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:26,493 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2024-11-10 15:30:26,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:30:26,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-10 15:30:26,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:26,495 INFO L225 Difference]: With dead ends: 73 [2024-11-10 15:30:26,495 INFO L226 Difference]: Without dead ends: 73 [2024-11-10 15:30:26,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:30:26,496 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 2 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:26,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 176 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:30:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-10 15:30:26,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-10 15:30:26,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 72 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:26,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2024-11-10 15:30:26,501 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 10 [2024-11-10 15:30:26,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:26,505 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2024-11-10 15:30:26,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:26,506 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2024-11-10 15:30:26,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-10 15:30:26,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:26,507 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:26,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 15:30:26,507 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:26,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash -924257546, now seen corresponding path program 1 times [2024-11-10 15:30:26,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:26,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002402528] [2024-11-10 15:30:26,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:26,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:26,674 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 15:30:26,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:26,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002402528] [2024-11-10 15:30:26,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002402528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:26,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:30:26,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:30:26,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380714969] [2024-11-10 15:30:26,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:26,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:30:26,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:26,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:30:26,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:30:26,678 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:26,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:26,763 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2024-11-10 15:30:26,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:30:26,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-10 15:30:26,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:26,766 INFO L225 Difference]: With dead ends: 72 [2024-11-10 15:30:26,766 INFO L226 Difference]: Without dead ends: 72 [2024-11-10 15:30:26,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:30:26,767 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 1 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:26,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 200 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:30:26,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-10 15:30:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-10 15:30:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 71 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2024-11-10 15:30:26,785 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 10 [2024-11-10 15:30:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:26,786 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2024-11-10 15:30:26,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:26,786 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2024-11-10 15:30:26,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-10 15:30:26,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:26,787 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:26,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 15:30:26,788 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:26,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:26,789 INFO L85 PathProgramCache]: Analyzing trace with hash -66275008, now seen corresponding path program 1 times [2024-11-10 15:30:26,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:26,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936524297] [2024-11-10 15:30:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:26,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:26,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936524297] [2024-11-10 15:30:26,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936524297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:26,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569118973] [2024-11-10 15:30:26,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:26,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:26,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:26,880 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 15:30:26,881 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 15:30:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:26,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 15:30:26,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:27,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:30:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:27,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569118973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:30:27,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:30:27,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-10 15:30:27,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140369498] [2024-11-10 15:30:27,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:30:27,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:30:27,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:27,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:30:27,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:30:27,109 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:27,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:27,132 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2024-11-10 15:30:27,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:30:27,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-10 15:30:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:27,134 INFO L225 Difference]: With dead ends: 81 [2024-11-10 15:30:27,135 INFO L226 Difference]: Without dead ends: 81 [2024-11-10 15:30:27,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:30:27,136 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 7 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:27,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 269 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:30:27,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-10 15:30:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-10 15:30:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 80 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:27,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2024-11-10 15:30:27,144 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 18 [2024-11-10 15:30:27,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:27,144 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2024-11-10 15:30:27,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:27,145 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2024-11-10 15:30:27,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 15:30:27,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:27,146 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:27,159 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 15:30:27,347 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 15:30:27,348 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:27,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:27,348 INFO L85 PathProgramCache]: Analyzing trace with hash 706117211, now seen corresponding path program 2 times [2024-11-10 15:30:27,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:27,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854090015] [2024-11-10 15:30:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:27,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:27,461 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 15:30:27,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:27,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854090015] [2024-11-10 15:30:27,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854090015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:27,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:30:27,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:30:27,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207681777] [2024-11-10 15:30:27,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:27,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:30:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:27,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:30:27,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:30:27,465 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:27,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:27,484 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2024-11-10 15:30:27,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:30:27,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-10 15:30:27,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:27,485 INFO L225 Difference]: With dead ends: 127 [2024-11-10 15:30:27,485 INFO L226 Difference]: Without dead ends: 127 [2024-11-10 15:30:27,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 15:30:27,486 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 46 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:27,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 196 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:30:27,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-10 15:30:27,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 83. [2024-11-10 15:30:27,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 82 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:27,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2024-11-10 15:30:27,499 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 27 [2024-11-10 15:30:27,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:27,499 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2024-11-10 15:30:27,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:27,499 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2024-11-10 15:30:27,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 15:30:27,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:27,500 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:27,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 15:30:27,500 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:27,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:27,501 INFO L85 PathProgramCache]: Analyzing trace with hash 706117322, now seen corresponding path program 1 times [2024-11-10 15:30:27,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:27,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201502973] [2024-11-10 15:30:27,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:27,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:27,759 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 15:30:27,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:27,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201502973] [2024-11-10 15:30:27,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201502973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:27,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535630661] [2024-11-10 15:30:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:27,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:27,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:27,762 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 15:30:27,764 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 15:30:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:27,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 15:30:27,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:27,924 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 15:30:27,957 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 15:30:27,957 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 15:30:28,048 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 15:30:28,048 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 15:30:28,097 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 15:30:28,098 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:30:28,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535630661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:28,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:30:28,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 7 [2024-11-10 15:30:28,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942331621] [2024-11-10 15:30:28,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:28,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:30:28,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:28,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:30:28,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:30:28,100 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:28,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:28,248 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2024-11-10 15:30:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:30:28,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-10 15:30:28,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:28,249 INFO L225 Difference]: With dead ends: 118 [2024-11-10 15:30:28,249 INFO L226 Difference]: Without dead ends: 118 [2024-11-10 15:30:28,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:30:28,250 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 72 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:28,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 171 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:30:28,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-10 15:30:28,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 82. [2024-11-10 15:30:28,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 81 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2024-11-10 15:30:28,259 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 27 [2024-11-10 15:30:28,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:28,259 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2024-11-10 15:30:28,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:28,259 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2024-11-10 15:30:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 15:30:28,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:28,263 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:28,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 15:30:28,464 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,SelfDestructingSolverStorable7 [2024-11-10 15:30:28,464 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:28,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:28,465 INFO L85 PathProgramCache]: Analyzing trace with hash 706117323, now seen corresponding path program 1 times [2024-11-10 15:30:28,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:28,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724542844] [2024-11-10 15:30:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:28,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:28,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:28,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724542844] [2024-11-10 15:30:28,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724542844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:28,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534617279] [2024-11-10 15:30:28,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:28,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:28,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:28,815 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 15:30:28,817 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 15:30:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:28,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 15:30:28,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:28,938 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 15:30:28,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:30:28,978 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 15:30:29,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:30:29,058 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 15:30:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:30:29,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:30:33,452 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_node_create_~temp~0#1.base_20| Int)) (or (forall ((v_ArrVal_301 Int) (|v_ULTIMATE.start_node_create_~temp~0#1.base_18| Int)) (or (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_node_create_~temp~0#1.base_18| 1)) (forall ((v_ArrVal_302 Int)) (<= (+ |c_ULTIMATE.start_main_~#s~0#1.offset| 4) (select (store (store |c_#length| |v_ULTIMATE.start_node_create_~temp~0#1.base_20| v_ArrVal_301) |v_ULTIMATE.start_node_create_~temp~0#1.base_18| v_ArrVal_302) |c_ULTIMATE.start_main_~#s~0#1.base|))))) (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_node_create_~temp~0#1.base_20| 1)))) (<= 0 |c_ULTIMATE.start_main_~#s~0#1.offset|)) is different from false [2024-11-10 15:30:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-10 15:30:33,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534617279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:30:33,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:30:33,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 5] total 14 [2024-11-10 15:30:33,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839236576] [2024-11-10 15:30:33,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:30:33,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 15:30:33,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:33,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 15:30:33,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=127, Unknown=1, NotChecked=24, Total=210 [2024-11-10 15:30:33,487 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:33,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:33,684 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2024-11-10 15:30:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:30:33,685 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-10 15:30:33,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:33,685 INFO L225 Difference]: With dead ends: 110 [2024-11-10 15:30:33,685 INFO L226 Difference]: Without dead ends: 110 [2024-11-10 15:30:33,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=93, Invalid=182, Unknown=1, NotChecked=30, Total=306 [2024-11-10 15:30:33,686 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 344 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:33,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 117 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 173 Invalid, 0 Unknown, 96 Unchecked, 0.1s Time] [2024-11-10 15:30:33,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-10 15:30:33,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 77. [2024-11-10 15:30:33,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 76 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2024-11-10 15:30:33,691 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 27 [2024-11-10 15:30:33,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:33,691 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2024-11-10 15:30:33,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:33,692 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2024-11-10 15:30:33,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-10 15:30:33,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:33,692 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:33,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 15:30:33,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:33,897 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:33,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:33,897 INFO L85 PathProgramCache]: Analyzing trace with hash 414800536, now seen corresponding path program 1 times [2024-11-10 15:30:33,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:33,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671314122] [2024-11-10 15:30:33,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:33,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 15:30:34,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:34,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671314122] [2024-11-10 15:30:34,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671314122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:34,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:30:34,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 15:30:34,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317939039] [2024-11-10 15:30:34,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:34,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 15:30:34,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:34,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 15:30:34,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:30:34,156 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:34,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:34,441 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2024-11-10 15:30:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:30:34,441 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-10 15:30:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:34,442 INFO L225 Difference]: With dead ends: 109 [2024-11-10 15:30:34,442 INFO L226 Difference]: Without dead ends: 109 [2024-11-10 15:30:34,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:30:34,443 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 52 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:34,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 268 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:30:34,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-10 15:30:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 78. [2024-11-10 15:30:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 77 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2024-11-10 15:30:34,450 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 28 [2024-11-10 15:30:34,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:34,450 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2024-11-10 15:30:34,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:34,451 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2024-11-10 15:30:34,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-10 15:30:34,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:34,451 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:34,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 15:30:34,452 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:34,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:34,455 INFO L85 PathProgramCache]: Analyzing trace with hash 414800537, now seen corresponding path program 1 times [2024-11-10 15:30:34,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:34,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813984550] [2024-11-10 15:30:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:34,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:30:34,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:34,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813984550] [2024-11-10 15:30:34,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813984550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:34,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:30:34,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 15:30:34,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13233726] [2024-11-10 15:30:34,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:34,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 15:30:34,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:34,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 15:30:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:30:34,745 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:35,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:35,020 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2024-11-10 15:30:35,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:30:35,021 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-10 15:30:35,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:35,021 INFO L225 Difference]: With dead ends: 118 [2024-11-10 15:30:35,021 INFO L226 Difference]: Without dead ends: 118 [2024-11-10 15:30:35,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:30:35,022 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 58 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:35,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 370 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:30:35,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-10 15:30:35,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 96. [2024-11-10 15:30:35,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 77 states have (on average 1.4675324675324675) internal successors, (113), 95 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2024-11-10 15:30:35,026 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 28 [2024-11-10 15:30:35,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:35,026 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2024-11-10 15:30:35,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:35,026 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2024-11-10 15:30:35,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-10 15:30:35,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:35,027 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:35,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 15:30:35,027 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:35,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:35,028 INFO L85 PathProgramCache]: Analyzing trace with hash 701862251, now seen corresponding path program 1 times [2024-11-10 15:30:35,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:35,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193268252] [2024-11-10 15:30:35,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:35,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:30:35,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:35,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193268252] [2024-11-10 15:30:35,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193268252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:35,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:30:35,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 15:30:35,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028411581] [2024-11-10 15:30:35,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:35,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 15:30:35,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:35,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 15:30:35,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:30:35,171 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:35,299 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions. [2024-11-10 15:30:35,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 15:30:35,300 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-10 15:30:35,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:35,300 INFO L225 Difference]: With dead ends: 95 [2024-11-10 15:30:35,301 INFO L226 Difference]: Without dead ends: 95 [2024-11-10 15:30:35,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:30:35,301 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 56 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:35,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 357 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:30:35,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-10 15:30:35,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-10 15:30:35,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 77 states have (on average 1.4545454545454546) internal successors, (112), 94 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 112 transitions. [2024-11-10 15:30:35,304 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 112 transitions. Word has length 31 [2024-11-10 15:30:35,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:35,305 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 112 transitions. [2024-11-10 15:30:35,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 112 transitions. [2024-11-10 15:30:35,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-10 15:30:35,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:35,306 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:35,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 15:30:35,306 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:35,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash 282893299, now seen corresponding path program 1 times [2024-11-10 15:30:35,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:35,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253700451] [2024-11-10 15:30:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:35,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:30:35,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:35,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253700451] [2024-11-10 15:30:35,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253700451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:35,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:30:35,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 15:30:35,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201181453] [2024-11-10 15:30:35,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:35,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 15:30:35,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:35,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 15:30:35,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:30:35,503 INFO L87 Difference]: Start difference. First operand 95 states and 112 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:35,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:35,737 INFO L93 Difference]: Finished difference Result 115 states and 122 transitions. [2024-11-10 15:30:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 15:30:35,738 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-10 15:30:35,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:35,739 INFO L225 Difference]: With dead ends: 115 [2024-11-10 15:30:35,739 INFO L226 Difference]: Without dead ends: 115 [2024-11-10 15:30:35,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:30:35,739 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 55 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:35,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 386 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:30:35,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-10 15:30:35,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 98. [2024-11-10 15:30:35,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.4375) internal successors, (115), 97 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:35,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 115 transitions. [2024-11-10 15:30:35,744 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 115 transitions. Word has length 32 [2024-11-10 15:30:35,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:35,744 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 115 transitions. [2024-11-10 15:30:35,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 115 transitions. [2024-11-10 15:30:35,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-10 15:30:35,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:35,746 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:35,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 15:30:35,746 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:35,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:35,747 INFO L85 PathProgramCache]: Analyzing trace with hash 179757673, now seen corresponding path program 1 times [2024-11-10 15:30:35,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:35,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663928757] [2024-11-10 15:30:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:35,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:35,828 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 15:30:35,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:35,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663928757] [2024-11-10 15:30:35,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663928757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:35,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:30:35,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:30:35,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590856945] [2024-11-10 15:30:35,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:35,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:30:35,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:35,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:30:35,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:30:35,831 INFO L87 Difference]: Start difference. First operand 98 states and 115 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:35,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:35,903 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2024-11-10 15:30:35,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:30:35,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-10 15:30:35,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:35,904 INFO L225 Difference]: With dead ends: 97 [2024-11-10 15:30:35,905 INFO L226 Difference]: Without dead ends: 97 [2024-11-10 15:30:35,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:30:35,905 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:35,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 155 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:30:35,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-10 15:30:35,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-10 15:30:35,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 80 states have (on average 1.425) internal successors, (114), 96 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:35,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 114 transitions. [2024-11-10 15:30:35,908 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 114 transitions. Word has length 33 [2024-11-10 15:30:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:35,909 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 114 transitions. [2024-11-10 15:30:35,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:35,909 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 114 transitions. [2024-11-10 15:30:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-10 15:30:35,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:35,910 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:35,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 15:30:35,910 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:35,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:35,911 INFO L85 PathProgramCache]: Analyzing trace with hash 206479205, now seen corresponding path program 1 times [2024-11-10 15:30:35,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:35,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285065335] [2024-11-10 15:30:35,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:35,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 15:30:36,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:36,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285065335] [2024-11-10 15:30:36,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285065335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:36,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:30:36,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 15:30:36,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691185734] [2024-11-10 15:30:36,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:36,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:30:36,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:36,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:30:36,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:30:36,094 INFO L87 Difference]: Start difference. First operand 97 states and 114 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:36,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:36,405 INFO L93 Difference]: Finished difference Result 122 states and 140 transitions. [2024-11-10 15:30:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 15:30:36,406 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-10 15:30:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:36,406 INFO L225 Difference]: With dead ends: 122 [2024-11-10 15:30:36,406 INFO L226 Difference]: Without dead ends: 122 [2024-11-10 15:30:36,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-10 15:30:36,407 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 61 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:36,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 233 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:30:36,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-10 15:30:36,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 100. [2024-11-10 15:30:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 85 states have (on average 1.3764705882352941) internal successors, (117), 99 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2024-11-10 15:30:36,410 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 33 [2024-11-10 15:30:36,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:36,411 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2024-11-10 15:30:36,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:36,411 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2024-11-10 15:30:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-10 15:30:36,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:36,413 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:36,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 15:30:36,414 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:36,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:36,416 INFO L85 PathProgramCache]: Analyzing trace with hash 206479206, now seen corresponding path program 1 times [2024-11-10 15:30:36,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:36,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515624376] [2024-11-10 15:30:36,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:36,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:30:36,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:36,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515624376] [2024-11-10 15:30:36,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515624376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:36,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:30:36,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 15:30:36,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485590180] [2024-11-10 15:30:36,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:36,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:30:36,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:36,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:30:36,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:30:36,726 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:37,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:37,028 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2024-11-10 15:30:37,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 15:30:37,028 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-10 15:30:37,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:37,029 INFO L225 Difference]: With dead ends: 122 [2024-11-10 15:30:37,029 INFO L226 Difference]: Without dead ends: 122 [2024-11-10 15:30:37,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-10 15:30:37,030 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 62 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:37,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 347 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:30:37,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-10 15:30:37,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 106. [2024-11-10 15:30:37,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 91 states have (on average 1.3846153846153846) internal successors, (126), 105 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2024-11-10 15:30:37,036 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 33 [2024-11-10 15:30:37,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:37,036 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2024-11-10 15:30:37,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:37,036 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2024-11-10 15:30:37,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-10 15:30:37,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:37,037 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:37,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 15:30:37,037 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:37,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:37,038 INFO L85 PathProgramCache]: Analyzing trace with hash 948431750, now seen corresponding path program 1 times [2024-11-10 15:30:37,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:37,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948136386] [2024-11-10 15:30:37,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:37,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:30:37,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:37,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948136386] [2024-11-10 15:30:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948136386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633492643] [2024-11-10 15:30:37,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:37,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:37,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:37,288 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 15:30:37,289 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 15:30:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:37,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:30:37,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:37,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:30:37,539 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 15:30:37,541 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 15:30:37,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:30:37,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633492643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:30:37,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:30:37,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 15 [2024-11-10 15:30:37,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050803007] [2024-11-10 15:30:37,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:30:37,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:30:37,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:37,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:30:37,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-10 15:30:37,543 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:37,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:37,647 INFO L93 Difference]: Finished difference Result 105 states and 125 transitions. [2024-11-10 15:30:37,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:30:37,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-10 15:30:37,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:37,648 INFO L225 Difference]: With dead ends: 105 [2024-11-10 15:30:37,648 INFO L226 Difference]: Without dead ends: 105 [2024-11-10 15:30:37,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-10 15:30:37,649 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 59 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:37,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 131 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:30:37,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-10 15:30:37,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-10 15:30:37,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 91 states have (on average 1.3736263736263736) internal successors, (125), 104 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:37,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2024-11-10 15:30:37,652 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 35 [2024-11-10 15:30:37,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:37,652 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2024-11-10 15:30:37,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:37,652 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2024-11-10 15:30:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-10 15:30:37,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:37,654 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:30:37,671 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 15:30:37,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 15:30:37,859 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:37,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:37,859 INFO L85 PathProgramCache]: Analyzing trace with hash 858021053, now seen corresponding path program 1 times [2024-11-10 15:30:37,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:37,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521808906] [2024-11-10 15:30:37,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:37,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:38,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:38,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521808906] [2024-11-10 15:30:38,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521808906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:38,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614113832] [2024-11-10 15:30:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:38,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:38,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:38,295 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 15:30:38,296 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 15:30:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:38,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-10 15:30:38,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:38,647 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 15:30:38,687 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 23 treesize of output 11 [2024-11-10 15:30:38,795 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 23 treesize of output 3 [2024-11-10 15:30:39,004 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 15:30:39,017 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 15:30:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:39,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:30:39,154 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 27 treesize of output 19 [2024-11-10 15:30:39,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-10 15:30:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:39,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614113832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:30:39,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:30:39,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 14] total 38 [2024-11-10 15:30:39,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988535581] [2024-11-10 15:30:39,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:30:39,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-10 15:30:39,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:39,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-10 15:30:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1284, Unknown=0, NotChecked=0, Total=1406 [2024-11-10 15:30:39,277 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:39,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:39,848 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2024-11-10 15:30:39,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 15:30:39,849 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-10 15:30:39,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:39,849 INFO L225 Difference]: With dead ends: 126 [2024-11-10 15:30:39,849 INFO L226 Difference]: Without dead ends: 126 [2024-11-10 15:30:39,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2024-11-10 15:30:39,851 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 149 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:39,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 895 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:30:39,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-10 15:30:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 106. [2024-11-10 15:30:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 105 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:39,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2024-11-10 15:30:39,854 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 35 [2024-11-10 15:30:39,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:39,854 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2024-11-10 15:30:39,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:39,854 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2024-11-10 15:30:39,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-10 15:30:39,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:39,855 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-10 15:30:39,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 15:30:40,059 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,SelfDestructingSolverStorable17 [2024-11-10 15:30:40,060 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:40,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:40,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1956793870, now seen corresponding path program 1 times [2024-11-10 15:30:40,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:40,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119998173] [2024-11-10 15:30:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:40,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:40,549 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:40,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:40,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119998173] [2024-11-10 15:30:40,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119998173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:40,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173498976] [2024-11-10 15:30:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:40,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:40,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:40,553 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 15:30:40,555 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 15:30:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:40,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-10 15:30:40,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:40,785 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 15:30:40,920 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 15:30:40,921 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 15:30:41,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 15:30:41,373 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 15:30:41,483 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 15:30:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:41,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:30:41,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2024-11-10 15:30:41,686 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 15:30:41,941 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:41,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173498976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:30:41,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:30:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 18] total 45 [2024-11-10 15:30:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113793034] [2024-11-10 15:30:41,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:30:41,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-10 15:30:41,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:41,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-10 15:30:41,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1920, Unknown=0, NotChecked=0, Total=2070 [2024-11-10 15:30:41,944 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand has 46 states, 45 states have (on average 2.111111111111111) internal successors, (95), 46 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:42,927 INFO L93 Difference]: Finished difference Result 128 states and 150 transitions. [2024-11-10 15:30:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 15:30:42,927 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.111111111111111) internal successors, (95), 46 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-10 15:30:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:42,929 INFO L225 Difference]: With dead ends: 128 [2024-11-10 15:30:42,929 INFO L226 Difference]: Without dead ends: 128 [2024-11-10 15:30:42,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=314, Invalid=3468, Unknown=0, NotChecked=0, Total=3782 [2024-11-10 15:30:42,931 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 197 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:42,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 552 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 15:30:42,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-10 15:30:42,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 110. [2024-11-10 15:30:42,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 109 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 131 transitions. [2024-11-10 15:30:42,938 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 131 transitions. Word has length 38 [2024-11-10 15:30:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:42,938 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 131 transitions. [2024-11-10 15:30:42,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.111111111111111) internal successors, (95), 46 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 131 transitions. [2024-11-10 15:30:42,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-10 15:30:42,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:42,939 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-10 15:30:42,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 15:30:43,139 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 15:30:43,140 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:43,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1956793871, now seen corresponding path program 1 times [2024-11-10 15:30:43,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:43,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167486561] [2024-11-10 15:30:43,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:43,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:44,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:44,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167486561] [2024-11-10 15:30:44,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167486561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:44,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305078701] [2024-11-10 15:30:44,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:44,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:44,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:44,034 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 15:30:44,036 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 15:30:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:44,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-10 15:30:44,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:44,252 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 15:30:44,387 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 15:30:44,387 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 15:30:44,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 15:30:44,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 15:30:44,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2024-11-10 15:30:45,022 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 15:30:45,025 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 15:30:45,062 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 15:30:45,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:30:45,297 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 64 treesize of output 48 [2024-11-10 15:30:45,300 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 52 treesize of output 36 [2024-11-10 15:30:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:46,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305078701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:30:46,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:30:46,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 17] total 50 [2024-11-10 15:30:46,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793551252] [2024-11-10 15:30:46,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:30:46,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-10 15:30:46,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:46,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-10 15:30:46,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2369, Unknown=1, NotChecked=0, Total=2550 [2024-11-10 15:30:46,322 INFO L87 Difference]: Start difference. First operand 110 states and 131 transitions. Second operand has 51 states, 50 states have (on average 2.14) internal successors, (107), 51 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:47,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:47,376 INFO L93 Difference]: Finished difference Result 133 states and 154 transitions. [2024-11-10 15:30:47,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 15:30:47,376 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.14) internal successors, (107), 51 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-10 15:30:47,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:47,377 INFO L225 Difference]: With dead ends: 133 [2024-11-10 15:30:47,377 INFO L226 Difference]: Without dead ends: 133 [2024-11-10 15:30:47,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=389, Invalid=4440, Unknown=1, NotChecked=0, Total=4830 [2024-11-10 15:30:47,379 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 186 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:47,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 826 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 15:30:47,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-10 15:30:47,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2024-11-10 15:30:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 95 states have (on average 1.3368421052631578) internal successors, (127), 107 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2024-11-10 15:30:47,386 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 38 [2024-11-10 15:30:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:47,387 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2024-11-10 15:30:47,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.14) internal successors, (107), 51 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:47,388 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2024-11-10 15:30:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-10 15:30:47,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:47,392 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-10 15:30:47,406 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 15:30:47,593 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 15:30:47,593 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:47,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:47,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1812509882, now seen corresponding path program 1 times [2024-11-10 15:30:47,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:47,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734786331] [2024-11-10 15:30:47,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:47,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:30:47,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:47,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734786331] [2024-11-10 15:30:47,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734786331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:47,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278592013] [2024-11-10 15:30:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:47,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:47,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:47,669 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 15:30:47,671 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 15:30:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:47,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 15:30:47,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:30:47,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:30:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:30:47,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278592013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:30:47,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:30:47,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-10 15:30:47,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096566968] [2024-11-10 15:30:47,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:30:47,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:30:47,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:47,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:30:47,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:30:47,929 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:47,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:47,941 INFO L93 Difference]: Finished difference Result 139 states and 162 transitions. [2024-11-10 15:30:47,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:30:47,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-10 15:30:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:47,943 INFO L225 Difference]: With dead ends: 139 [2024-11-10 15:30:47,943 INFO L226 Difference]: Without dead ends: 139 [2024-11-10 15:30:47,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:30:47,943 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 94 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:47,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 203 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:30:47,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-10 15:30:47,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2024-11-10 15:30:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 120 states have (on average 1.35) internal successors, (162), 132 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 162 transitions. [2024-11-10 15:30:47,948 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 162 transitions. Word has length 39 [2024-11-10 15:30:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:47,948 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 162 transitions. [2024-11-10 15:30:47,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:47,948 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 162 transitions. [2024-11-10 15:30:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-10 15:30:47,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:47,949 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-10 15:30:47,967 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 15:30:48,150 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,SelfDestructingSolverStorable20 [2024-11-10 15:30:48,150 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:48,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1812509771, now seen corresponding path program 1 times [2024-11-10 15:30:48,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:48,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519206160] [2024-11-10 15:30:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:48,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:30:48,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:48,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519206160] [2024-11-10 15:30:48,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519206160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:48,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417024008] [2024-11-10 15:30:48,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:48,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:48,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:48,233 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 15:30:48,253 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 15:30:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:48,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 15:30:48,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:30:48,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:30:48,451 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 15:30:48,452 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 12 treesize of output 11 [2024-11-10 15:30:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:30:48,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417024008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:30:48,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:30:48,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-10 15:30:48,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289216047] [2024-11-10 15:30:48,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:30:48,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:30:48,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:48,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:30:48,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:30:48,467 INFO L87 Difference]: Start difference. First operand 133 states and 162 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:48,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:48,531 INFO L93 Difference]: Finished difference Result 138 states and 168 transitions. [2024-11-10 15:30:48,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:30:48,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-10 15:30:48,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:48,534 INFO L225 Difference]: With dead ends: 138 [2024-11-10 15:30:48,534 INFO L226 Difference]: Without dead ends: 138 [2024-11-10 15:30:48,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:30:48,534 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 62 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:48,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 92 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:30:48,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-10 15:30:48,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-11-10 15:30:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 125 states have (on average 1.344) internal successors, (168), 137 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 168 transitions. [2024-11-10 15:30:48,539 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 168 transitions. Word has length 39 [2024-11-10 15:30:48,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:48,539 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 168 transitions. [2024-11-10 15:30:48,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 168 transitions. [2024-11-10 15:30:48,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-10 15:30:48,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:48,540 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-10 15:30:48,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 15:30:48,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:48,744 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:48,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:48,745 INFO L85 PathProgramCache]: Analyzing trace with hash -353228019, now seen corresponding path program 1 times [2024-11-10 15:30:48,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:48,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913906561] [2024-11-10 15:30:48,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:48,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:49,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:49,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913906561] [2024-11-10 15:30:49,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913906561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:49,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834618785] [2024-11-10 15:30:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:49,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:49,301 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 15:30:49,303 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 15:30:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:49,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-10 15:30:49,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:49,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 15:30:49,594 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 20 treesize of output 12 [2024-11-10 15:30:49,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:30:49,633 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 22 treesize of output 20 [2024-11-10 15:30:49,680 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 15:30:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:49,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:30:49,758 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 15:30:49,791 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 15:30:49,801 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 13 treesize of output 11 [2024-11-10 15:30:49,804 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 15:30:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:49,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834618785] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:30:49,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:30:49,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 29 [2024-11-10 15:30:49,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552446377] [2024-11-10 15:30:49,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:30:49,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-10 15:30:49,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:49,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-10 15:30:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2024-11-10 15:30:49,835 INFO L87 Difference]: Start difference. First operand 138 states and 168 transitions. Second operand has 29 states, 29 states have (on average 2.0) internal successors, (58), 29 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:50,240 INFO L93 Difference]: Finished difference Result 135 states and 160 transitions. [2024-11-10 15:30:50,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 15:30:50,240 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0) internal successors, (58), 29 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-10 15:30:50,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:50,241 INFO L225 Difference]: With dead ends: 135 [2024-11-10 15:30:50,241 INFO L226 Difference]: Without dead ends: 135 [2024-11-10 15:30:50,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2024-11-10 15:30:50,241 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 23 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:50,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 911 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:30:50,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-10 15:30:50,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2024-11-10 15:30:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 116 states have (on average 1.3620689655172413) internal successors, (158), 128 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 158 transitions. [2024-11-10 15:30:50,244 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 158 transitions. Word has length 40 [2024-11-10 15:30:50,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:50,244 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 158 transitions. [2024-11-10 15:30:50,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0) internal successors, (58), 29 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:50,244 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 158 transitions. [2024-11-10 15:30:50,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-10 15:30:50,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:50,245 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-10 15:30:50,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 15:30:50,445 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,SelfDestructingSolverStorable22 [2024-11-10 15:30:50,446 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:50,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash -716765914, now seen corresponding path program 1 times [2024-11-10 15:30:50,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:50,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083751264] [2024-11-10 15:30:50,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:50,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 15:30:50,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083751264] [2024-11-10 15:30:50,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083751264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852328717] [2024-11-10 15:30:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:50,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:50,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:50,638 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 15:30:50,640 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 15:30:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:50,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 15:30:50,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:30:50,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:30:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:30:50,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852328717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:30:50,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:30:50,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 11 [2024-11-10 15:30:50,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165275007] [2024-11-10 15:30:50,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:30:50,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 15:30:50,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:50,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 15:30:50,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:30:50,865 INFO L87 Difference]: Start difference. First operand 129 states and 158 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:51,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:51,183 INFO L93 Difference]: Finished difference Result 140 states and 163 transitions. [2024-11-10 15:30:51,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 15:30:51,183 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-10 15:30:51,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:51,184 INFO L225 Difference]: With dead ends: 140 [2024-11-10 15:30:51,184 INFO L226 Difference]: Without dead ends: 140 [2024-11-10 15:30:51,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:30:51,185 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 50 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:51,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 265 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:30:51,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-10 15:30:51,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 133. [2024-11-10 15:30:51,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 120 states have (on average 1.3583333333333334) internal successors, (163), 132 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2024-11-10 15:30:51,189 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 40 [2024-11-10 15:30:51,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:51,189 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2024-11-10 15:30:51,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2024-11-10 15:30:51,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-10 15:30:51,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:51,190 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-10 15:30:51,206 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 15:30:51,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-10 15:30:51,390 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:51,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:51,391 INFO L85 PathProgramCache]: Analyzing trace with hash -716765913, now seen corresponding path program 1 times [2024-11-10 15:30:51,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:51,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469704614] [2024-11-10 15:30:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:51,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:30:51,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:51,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469704614] [2024-11-10 15:30:51,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469704614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:51,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407776247] [2024-11-10 15:30:51,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:51,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:51,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:51,693 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 15:30:51,694 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 15:30:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:51,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-10 15:30:51,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:52,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-10 15:30:52,039 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 19 treesize of output 11 [2024-11-10 15:30:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:30:52,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:30:52,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:30:52,259 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 23 treesize of output 27 [2024-11-10 15:30:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:30:52,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407776247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:30:52,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:30:52,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 23 [2024-11-10 15:30:52,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641287277] [2024-11-10 15:30:52,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:30:52,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 15:30:52,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 15:30:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2024-11-10 15:30:52,307 INFO L87 Difference]: Start difference. First operand 133 states and 163 transitions. Second operand has 24 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:53,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:53,126 INFO L93 Difference]: Finished difference Result 156 states and 173 transitions. [2024-11-10 15:30:53,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 15:30:53,127 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-10 15:30:53,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:53,127 INFO L225 Difference]: With dead ends: 156 [2024-11-10 15:30:53,127 INFO L226 Difference]: Without dead ends: 156 [2024-11-10 15:30:53,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=290, Invalid=2362, Unknown=0, NotChecked=0, Total=2652 [2024-11-10 15:30:53,129 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 206 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:53,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 525 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:30:53,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-10 15:30:53,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 133. [2024-11-10 15:30:53,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 120 states have (on average 1.325) internal successors, (159), 132 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:53,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 159 transitions. [2024-11-10 15:30:53,132 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 159 transitions. Word has length 40 [2024-11-10 15:30:53,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:53,132 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 159 transitions. [2024-11-10 15:30:53,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:53,133 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 159 transitions. [2024-11-10 15:30:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-10 15:30:53,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:53,133 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-10 15:30:53,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-10 15:30:53,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-10 15:30:53,334 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:53,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:53,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1617275644, now seen corresponding path program 1 times [2024-11-10 15:30:53,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:53,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103667822] [2024-11-10 15:30:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:53,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:53,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:53,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103667822] [2024-11-10 15:30:53,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103667822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:53,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785141849] [2024-11-10 15:30:53,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:53,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:53,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:53,894 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 15:30:53,895 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 15:30:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:54,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-10 15:30:54,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:54,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 15:30:54,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-10 15:30:54,561 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 15:30:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:54,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:30:54,700 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 15:30:54,702 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 15:30:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:54,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785141849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:30:54,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:30:54,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 14] total 37 [2024-11-10 15:30:54,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587532484] [2024-11-10 15:30:54,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:30:54,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-10 15:30:54,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:54,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-10 15:30:54,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2024-11-10 15:30:54,823 INFO L87 Difference]: Start difference. First operand 133 states and 159 transitions. Second operand has 38 states, 37 states have (on average 2.5405405405405403) internal successors, (94), 38 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:55,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:30:55,448 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2024-11-10 15:30:55,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 15:30:55,448 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.5405405405405403) internal successors, (94), 38 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-10 15:30:55,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:30:55,449 INFO L225 Difference]: With dead ends: 139 [2024-11-10 15:30:55,449 INFO L226 Difference]: Without dead ends: 139 [2024-11-10 15:30:55,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=2232, Unknown=0, NotChecked=0, Total=2450 [2024-11-10 15:30:55,450 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 122 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:30:55,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 830 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:30:55,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-10 15:30:55,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 134. [2024-11-10 15:30:55,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 121 states have (on average 1.322314049586777) internal successors, (160), 133 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2024-11-10 15:30:55,453 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 42 [2024-11-10 15:30:55,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:30:55,454 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2024-11-10 15:30:55,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.5405405405405403) internal successors, (94), 38 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:30:55,454 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2024-11-10 15:30:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-10 15:30:55,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:30:55,455 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-10 15:30:55,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-10 15:30:55,658 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,SelfDestructingSolverStorable25 [2024-11-10 15:30:55,659 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:30:55,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:30:55,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1406034181, now seen corresponding path program 2 times [2024-11-10 15:30:55,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:30:55,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36302669] [2024-11-10 15:30:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:30:55,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:30:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:30:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:56,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:30:56,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36302669] [2024-11-10 15:30:56,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36302669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:30:56,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63564498] [2024-11-10 15:30:56,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:30:56,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:30:56,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:30:56,836 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 15:30:56,837 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 15:30:57,004 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:30:57,004 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:30:57,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-10 15:30:57,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:30:57,192 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 15:30:57,198 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 15:30:57,307 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 15:30:57,308 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 15:30:57,356 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 16 treesize of output 11 [2024-11-10 15:30:57,361 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 16 treesize of output 11 [2024-11-10 15:30:57,370 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 16 treesize of output 11 [2024-11-10 15:30:57,376 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 16 treesize of output 11 [2024-11-10 15:30:57,456 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 26 [2024-11-10 15:30:57,468 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 33 treesize of output 17 [2024-11-10 15:30:57,809 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 89 treesize of output 65 [2024-11-10 15:30:57,812 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 69 treesize of output 49 [2024-11-10 15:30:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:30:58,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:30:58,478 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 84 treesize of output 64 [2024-11-10 15:30:58,481 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 68 treesize of output 48 [2024-11-10 15:30:59,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:30:59,327 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2024-11-10 15:30:59,335 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:30:59,335 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2024-11-10 15:30:59,344 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 4 |c_ULTIMATE.start_sll_create_~head~0#1.offset|))) (and (forall ((|ULTIMATE.start_sll_create_~new_head~0#1.offset| Int) (v_arrayElimArr_2 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_arrayElimArr_2) |c_ULTIMATE.start_sll_create_~head~0#1.base|) .cse0) 0) (not (= |c_ULTIMATE.start_sll_create_~head~0#1.base| (select v_arrayElimArr_2 (+ 4 |ULTIMATE.start_sll_create_~new_head~0#1.offset|)))))) (forall ((|ULTIMATE.start_sll_create_~new_head~0#1.offset| Int) (v_arrayElimArr_1 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_arrayElimArr_1) |c_ULTIMATE.start_sll_create_~head~0#1.base|) .cse0) 0) (not (= (select v_arrayElimArr_1 (+ 4 |ULTIMATE.start_sll_create_~new_head~0#1.offset|)) |c_ULTIMATE.start_sll_create_~head~0#1.offset|)))))) is different from false [2024-11-10 15:30:59,682 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:30:59,682 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 75 treesize of output 76 [2024-11-10 15:30:59,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:30:59,691 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 65 treesize of output 66 [2024-11-10 15:30:59,695 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 79 treesize of output 67 [2024-11-10 15:30:59,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:30:59,706 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 62 treesize of output 63 [2024-11-10 15:30:59,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:30:59,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 79 [2024-11-10 15:30:59,726 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 74 treesize of output 62 [2024-11-10 15:30:59,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:30:59,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 58 [2024-11-10 15:30:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-10 15:30:59,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63564498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:30:59,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:30:59,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 19] total 57 [2024-11-10 15:30:59,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894074576] [2024-11-10 15:30:59,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:30:59,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-10 15:30:59,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:30:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-10 15:30:59,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2924, Unknown=1, NotChecked=108, Total=3192 [2024-11-10 15:30:59,811 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand has 57 states, 57 states have (on average 2.0350877192982457) internal successors, (116), 57 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:05,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 15:31:05,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:31:05,395 INFO L93 Difference]: Finished difference Result 164 states and 191 transitions. [2024-11-10 15:31:05,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 15:31:05,396 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0350877192982457) internal successors, (116), 57 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-10 15:31:05,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:31:05,396 INFO L225 Difference]: With dead ends: 164 [2024-11-10 15:31:05,396 INFO L226 Difference]: Without dead ends: 164 [2024-11-10 15:31:05,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=290, Invalid=4969, Unknown=1, NotChecked=142, Total=5402 [2024-11-10 15:31:05,398 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 52 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-10 15:31:05,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1379 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1234 Invalid, 1 Unknown, 54 Unchecked, 4.7s Time] [2024-11-10 15:31:05,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-10 15:31:05,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2024-11-10 15:31:05,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 147 states have (on average 1.272108843537415) internal successors, (187), 159 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 187 transitions. [2024-11-10 15:31:05,401 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 187 transitions. Word has length 43 [2024-11-10 15:31:05,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:31:05,401 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 187 transitions. [2024-11-10 15:31:05,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.0350877192982457) internal successors, (116), 57 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:05,401 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 187 transitions. [2024-11-10 15:31:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-10 15:31:05,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:31:05,401 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, 1] [2024-11-10 15:31:05,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-10 15:31:05,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:31:05,602 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:31:05,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:31:05,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1436716690, now seen corresponding path program 1 times [2024-11-10 15:31:05,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:31:05,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409840992] [2024-11-10 15:31:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:31:05,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:31:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:31:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-10 15:31:05,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:31:05,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409840992] [2024-11-10 15:31:05,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409840992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:31:05,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747333886] [2024-11-10 15:31:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:31:05,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:31:05,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:31:05,775 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 15:31:05,776 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 15:31:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:31:05,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 15:31:05,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:31:06,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:31:06,079 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 15:31:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 15:31:06,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:31:06,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:31:06,157 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 20 [2024-11-10 15:31:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 15:31:06,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747333886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:31:06,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:31:06,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 13 [2024-11-10 15:31:06,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867322299] [2024-11-10 15:31:06,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:31:06,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 15:31:06,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:31:06,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 15:31:06,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-10 15:31:06,200 INFO L87 Difference]: Start difference. First operand 160 states and 187 transitions. Second operand has 14 states, 13 states have (on average 6.0) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:06,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:31:06,276 INFO L93 Difference]: Finished difference Result 158 states and 184 transitions. [2024-11-10 15:31:06,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:31:06,276 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.0) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-10 15:31:06,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:31:06,277 INFO L225 Difference]: With dead ends: 158 [2024-11-10 15:31:06,277 INFO L226 Difference]: Without dead ends: 158 [2024-11-10 15:31:06,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:31:06,277 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 103 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:31:06,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 124 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:31:06,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-10 15:31:06,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 153. [2024-11-10 15:31:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 142 states have (on average 1.2535211267605635) internal successors, (178), 152 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 178 transitions. [2024-11-10 15:31:06,281 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 178 transitions. Word has length 48 [2024-11-10 15:31:06,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:31:06,282 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 178 transitions. [2024-11-10 15:31:06,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.0) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 178 transitions. [2024-11-10 15:31:06,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-10 15:31:06,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:31:06,282 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] [2024-11-10 15:31:06,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-10 15:31:06,487 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,SelfDestructingSolverStorable27 [2024-11-10 15:31:06,488 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:31:06,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:31:06,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1588544464, now seen corresponding path program 1 times [2024-11-10 15:31:06,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:31:06,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532378608] [2024-11-10 15:31:06,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:31:06,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:31:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:31:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:31:07,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:31:07,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532378608] [2024-11-10 15:31:07,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532378608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:31:07,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165241851] [2024-11-10 15:31:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:31:07,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:31:07,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:31:07,032 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 15:31:07,033 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 15:31:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:31:07,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-10 15:31:07,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:31:07,338 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 15:31:07,424 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 15:31:07,424 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 15:31:07,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 15:31:07,704 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 15:31:07,931 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-10 15:31:07,932 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 15 [2024-11-10 15:31:08,020 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 18 treesize of output 13 [2024-11-10 15:31:08,085 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 15:31:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:31:08,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:31:08,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:31:08,290 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 36 treesize of output 40 [2024-11-10 15:31:09,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:31:09,236 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 81 treesize of output 81 [2024-11-10 15:31:09,241 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 61 treesize of output 49 [2024-11-10 15:31:09,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2024-11-10 15:31:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:31:10,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165241851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:31:10,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:31:10,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 25] total 63 [2024-11-10 15:31:10,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622324300] [2024-11-10 15:31:10,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:31:10,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-10 15:31:10,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:31:10,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-10 15:31:10,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=3807, Unknown=0, NotChecked=0, Total=4032 [2024-11-10 15:31:10,085 INFO L87 Difference]: Start difference. First operand 153 states and 178 transitions. Second operand has 64 states, 63 states have (on average 2.253968253968254) internal successors, (142), 64 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:12,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:31:12,699 INFO L93 Difference]: Finished difference Result 284 states and 330 transitions. [2024-11-10 15:31:12,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-10 15:31:12,700 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.253968253968254) internal successors, (142), 64 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-10 15:31:12,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:31:12,701 INFO L225 Difference]: With dead ends: 284 [2024-11-10 15:31:12,701 INFO L226 Difference]: Without dead ends: 284 [2024-11-10 15:31:12,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1703 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=669, Invalid=8451, Unknown=0, NotChecked=0, Total=9120 [2024-11-10 15:31:12,703 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 487 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 2582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:31:12,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 1388 Invalid, 2582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-10 15:31:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-10 15:31:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 217. [2024-11-10 15:31:12,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 206 states have (on average 1.3009708737864079) internal successors, (268), 216 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 268 transitions. [2024-11-10 15:31:12,708 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 268 transitions. Word has length 49 [2024-11-10 15:31:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:31:12,708 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 268 transitions. [2024-11-10 15:31:12,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.253968253968254) internal successors, (142), 64 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 268 transitions. [2024-11-10 15:31:12,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-10 15:31:12,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:31:12,709 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:31:12,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-10 15:31:12,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-10 15:31:12,910 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:31:12,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:31:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1086849098, now seen corresponding path program 3 times [2024-11-10 15:31:12,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:31:12,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871445274] [2024-11-10 15:31:12,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:31:12,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:31:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:31:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:31:12,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:31:12,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871445274] [2024-11-10 15:31:12,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871445274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:31:12,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888472387] [2024-11-10 15:31:12,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:31:12,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:31:12,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:31:12,996 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 15:31:12,997 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 15:31:13,216 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-10 15:31:13,216 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:31:13,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 15:31:13,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:31:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:31:13,240 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:31:13,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888472387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:31:13,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:31:13,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-10 15:31:13,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701201378] [2024-11-10 15:31:13,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:31:13,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:31:13,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:31:13,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:31:13,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:31:13,242 INFO L87 Difference]: Start difference. First operand 217 states and 268 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:13,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:31:13,258 INFO L93 Difference]: Finished difference Result 178 states and 221 transitions. [2024-11-10 15:31:13,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:31:13,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-10 15:31:13,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:31:13,259 INFO L225 Difference]: With dead ends: 178 [2024-11-10 15:31:13,259 INFO L226 Difference]: Without dead ends: 178 [2024-11-10 15:31:13,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:31:13,260 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:31:13,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:31:13,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-10 15:31:13,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-10 15:31:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 167 states have (on average 1.3233532934131738) internal successors, (221), 177 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:13,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 221 transitions. [2024-11-10 15:31:13,265 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 221 transitions. Word has length 52 [2024-11-10 15:31:13,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:31:13,265 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 221 transitions. [2024-11-10 15:31:13,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 221 transitions. [2024-11-10 15:31:13,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-10 15:31:13,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:31:13,266 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2024-11-10 15:31:13,285 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 15:31:13,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:31:13,467 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:31:13,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:31:13,467 INFO L85 PathProgramCache]: Analyzing trace with hash -358079355, now seen corresponding path program 1 times [2024-11-10 15:31:13,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:31:13,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654234079] [2024-11-10 15:31:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:31:13,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:31:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:31:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 15:31:13,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:31:13,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654234079] [2024-11-10 15:31:13,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654234079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:31:13,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557322862] [2024-11-10 15:31:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:31:13,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:31:13,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:31:13,999 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 15:31:14,000 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 15:31:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:31:14,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-10 15:31:14,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:31:14,360 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 33 [2024-11-10 15:31:14,362 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 25 [2024-11-10 15:31:14,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-10 15:31:14,395 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 15:31:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:31:14,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:31:14,487 INFO L349 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2024-11-10 15:31:14,487 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 38 treesize of output 33 [2024-11-10 15:31:14,495 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2024-11-10 15:31:14,496 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 12 [2024-11-10 15:31:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-10 15:31:14,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557322862] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 15:31:14,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:31:14,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15, 10] total 24 [2024-11-10 15:31:14,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617796369] [2024-11-10 15:31:14,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:31:14,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 15:31:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:31:14,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 15:31:14,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2024-11-10 15:31:14,515 INFO L87 Difference]: Start difference. First operand 178 states and 221 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:31:14,643 INFO L93 Difference]: Finished difference Result 173 states and 208 transitions. [2024-11-10 15:31:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:31:14,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-10 15:31:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:31:14,644 INFO L225 Difference]: With dead ends: 173 [2024-11-10 15:31:14,644 INFO L226 Difference]: Without dead ends: 173 [2024-11-10 15:31:14,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2024-11-10 15:31:14,645 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 2 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:31:14,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 269 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:31:14,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-10 15:31:14,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2024-11-10 15:31:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 162 states have (on average 1.271604938271605) internal successors, (206), 170 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:14,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 206 transitions. [2024-11-10 15:31:14,649 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 206 transitions. Word has length 56 [2024-11-10 15:31:14,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:31:14,649 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 206 transitions. [2024-11-10 15:31:14,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:14,650 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 206 transitions. [2024-11-10 15:31:14,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-10 15:31:14,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:31:14,650 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 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] [2024-11-10 15:31:14,671 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 15:31:14,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:31:14,851 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:31:14,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:31:14,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1158680902, now seen corresponding path program 1 times [2024-11-10 15:31:14,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:31:14,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297425555] [2024-11-10 15:31:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:31:14,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:31:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:31:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:31:15,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:31:15,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297425555] [2024-11-10 15:31:15,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297425555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:31:15,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358491453] [2024-11-10 15:31:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:31:15,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:31:15,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:31:15,485 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 15:31:15,486 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 15:31:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:31:15,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-10 15:31:15,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:31:16,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-10 15:31:16,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-10 15:31:16,326 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 11 treesize of output 3 [2024-11-10 15:31:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 15:31:16,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:31:16,494 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 37 [2024-11-10 15:31:16,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:31:16,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:31:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 15:31:16,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358491453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:31:16,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:31:16,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 10] total 41 [2024-11-10 15:31:16,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038042490] [2024-11-10 15:31:16,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:31:16,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-10 15:31:16,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:31:16,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-10 15:31:16,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1503, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 15:31:16,628 INFO L87 Difference]: Start difference. First operand 171 states and 206 transitions. Second operand has 41 states, 41 states have (on average 3.3902439024390243) internal successors, (139), 41 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:31:17,145 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2024-11-10 15:31:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 15:31:17,145 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.3902439024390243) internal successors, (139), 41 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-10 15:31:17,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:31:17,145 INFO L225 Difference]: With dead ends: 126 [2024-11-10 15:31:17,145 INFO L226 Difference]: Without dead ends: 126 [2024-11-10 15:31:17,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=246, Invalid=2204, Unknown=0, NotChecked=0, Total=2450 [2024-11-10 15:31:17,147 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 193 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:31:17,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 870 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:31:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-10 15:31:17,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 112. [2024-11-10 15:31:17,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 103 states have (on average 1.203883495145631) internal successors, (124), 111 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2024-11-10 15:31:17,149 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 59 [2024-11-10 15:31:17,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:31:17,150 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2024-11-10 15:31:17,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.3902439024390243) internal successors, (139), 41 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:17,150 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2024-11-10 15:31:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-10 15:31:17,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:31:17,150 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-11-10 15:31:17,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-10 15:31:17,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:31:17,351 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:31:17,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:31:17,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1459355717, now seen corresponding path program 1 times [2024-11-10 15:31:17,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:31:17,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562698327] [2024-11-10 15:31:17,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:31:17,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:31:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:31:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 15:31:17,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:31:17,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562698327] [2024-11-10 15:31:17,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562698327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:31:17,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903145054] [2024-11-10 15:31:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:31:17,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:31:17,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:31:17,436 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 15:31:17,438 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 15:31:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:31:17,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 15:31:17,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:31:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 15:31:17,753 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:31:17,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903145054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:31:17,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:31:17,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-10 15:31:17,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062210743] [2024-11-10 15:31:17,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:31:17,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:31:17,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:31:17,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:31:17,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:31:17,755 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:17,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:31:17,768 INFO L93 Difference]: Finished difference Result 68 states and 67 transitions. [2024-11-10 15:31:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:31:17,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-10 15:31:17,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:31:17,769 INFO L225 Difference]: With dead ends: 68 [2024-11-10 15:31:17,769 INFO L226 Difference]: Without dead ends: 68 [2024-11-10 15:31:17,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:31:17,770 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:31:17,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 153 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:31:17,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-10 15:31:17,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-10 15:31:17,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 67 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:17,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 67 transitions. [2024-11-10 15:31:17,789 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 67 transitions. Word has length 61 [2024-11-10 15:31:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:31:17,790 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 67 transitions. [2024-11-10 15:31:17,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:31:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 67 transitions. [2024-11-10 15:31:17,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-10 15:31:17,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:31:17,790 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-10 15:31:17,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-10 15:31:17,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-10 15:31:17,991 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-10 15:31:17,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:31:17,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2016814589, now seen corresponding path program 1 times [2024-11-10 15:31:17,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:31:17,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012458391] [2024-11-10 15:31:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:31:17,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:31:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:31:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:31:19,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:31:19,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012458391] [2024-11-10 15:31:19,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012458391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:31:19,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787365037] [2024-11-10 15:31:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:31:19,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:31:19,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:31:19,701 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:31:19,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-10 15:31:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:31:19,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-10 15:31:19,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:31:20,277 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 15:31:20,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 15:31:21,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:31:21,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2024-11-10 15:31:23,716 INFO L349 Elim1Store]: treesize reduction 130, result has 52.4 percent of original size [2024-11-10 15:31:23,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 279 treesize of output 319