./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya --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 277634da297b7f9e262585608ed7ad62cca7d59b0122d4e61ee1b4b78256acae --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:07:25,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:07:25,906 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 05:07:25,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:07:25,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:07:25,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:07:25,935 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:07:25,936 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:07:25,936 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:07:25,937 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:07:25,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:07:25,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:07:25,939 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:07:25,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:07:25,940 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:07:25,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:07:25,941 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:07:25,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:07:25,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:07:25,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:07:25,943 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 05:07:25,944 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 05:07:25,944 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 05:07:25,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:07:25,945 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 05:07:25,946 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:07:25,946 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:07:25,946 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:07:25,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:07:25,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:07:25,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:07:25,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:07:25,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:07:25,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:07:25,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:07:25,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:07:25,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:07:25,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:07:25,950 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:07:25,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:07:25,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:07:25,950 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 277634da297b7f9e262585608ed7ad62cca7d59b0122d4e61ee1b4b78256acae [2023-11-29 05:07:26,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:07:26,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:07:26,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:07:26,175 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:07:26,175 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:07:26,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i [2023-11-29 05:07:28,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:07:29,190 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:07:29,190 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i [2023-11-29 05:07:29,206 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/data/d6daa6922/4050a33089bf446ebfff243a5d105d6c/FLAGfc6bbd9ec [2023-11-29 05:07:29,221 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/data/d6daa6922/4050a33089bf446ebfff243a5d105d6c [2023-11-29 05:07:29,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:07:29,225 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:07:29,227 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:07:29,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:07:29,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:07:29,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf92bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29, skipping insertion in model container [2023-11-29 05:07:29,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,281 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:07:29,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:07:29,585 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:07:29,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:07:29,699 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:07:29,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29 WrapperNode [2023-11-29 05:07:29,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:07:29,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:07:29,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:07:29,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:07:29,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,745 INFO L138 Inliner]: procedures = 127, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 120 [2023-11-29 05:07:29,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:07:29,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:07:29,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:07:29,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:07:29,757 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,762 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,781 INFO L175 MemorySlicer]: Split 16 memory accesses to 3 slices as follows [2, 9, 5]. 56 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]. [2023-11-29 05:07:29,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,781 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:07:29,805 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:07:29,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:07:29,806 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:07:29,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29" (1/1) ... [2023-11-29 05:07:29,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:07:29,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:29,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:07:29,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:07:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:07:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:07:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:07:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:07:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:07:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:07:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-11-29 05:07:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-11-29 05:07:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:07:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:07:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:07:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 05:07:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 05:07:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 05:07:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 05:07:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 05:07:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 05:07:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:07:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 05:07:29,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 05:07:29,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 05:07:29,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:07:29,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:07:29,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:07:29,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:07:29,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:07:29,998 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:07:30,000 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:07:30,259 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:07:30,304 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:07:30,304 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 05:07:30,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:07:30 BoogieIcfgContainer [2023-11-29 05:07:30,305 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:07:30,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:07:30,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:07:30,310 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:07:30,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:07:29" (1/3) ... [2023-11-29 05:07:30,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f20ca86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:07:30, skipping insertion in model container [2023-11-29 05:07:30,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:29" (2/3) ... [2023-11-29 05:07:30,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f20ca86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:07:30, skipping insertion in model container [2023-11-29 05:07:30,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:07:30" (3/3) ... [2023-11-29 05:07:30,313 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_unequal.i [2023-11-29 05:07:30,327 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:07:30,327 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-11-29 05:07:30,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:07:30,368 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6b273b76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:07:30,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-29 05:07:30,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 35 states have (on average 2.2) internal successors, (77), 66 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:30,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 05:07:30,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:30,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 05:07:30,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:30,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:30,385 INFO L85 PathProgramCache]: Analyzing trace with hash 986417124, now seen corresponding path program 1 times [2023-11-29 05:07:30,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:30,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476994766] [2023-11-29 05:07:30,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:30,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:07:30,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:30,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476994766] [2023-11-29 05:07:30,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476994766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:30,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:30,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:07:30,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995889109] [2023-11-29 05:07:30,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:30,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:07:30,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:30,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:07:30,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:07:30,689 INFO L87 Difference]: Start difference. First operand has 70 states, 35 states have (on average 2.2) internal successors, (77), 66 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:07:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:30,787 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2023-11-29 05:07:30,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:07:30,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 05:07:30,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:30,796 INFO L225 Difference]: With dead ends: 67 [2023-11-29 05:07:30,796 INFO L226 Difference]: Without dead ends: 65 [2023-11-29 05:07:30,798 INFO L412 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 [2023-11-29 05:07:30,801 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:30,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 90 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:07:30,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-29 05:07:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-11-29 05:07:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 33 states have (on average 2.0) internal successors, (66), 61 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:30,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2023-11-29 05:07:30,836 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 6 [2023-11-29 05:07:30,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:30,836 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2023-11-29 05:07:30,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:07:30,837 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2023-11-29 05:07:30,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 05:07:30,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:30,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 05:07:30,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:07:30,838 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:30,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:30,839 INFO L85 PathProgramCache]: Analyzing trace with hash 986417125, now seen corresponding path program 1 times [2023-11-29 05:07:30,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:30,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630387231] [2023-11-29 05:07:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:30,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:07:30,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:30,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630387231] [2023-11-29 05:07:30,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630387231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:30,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:30,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:07:30,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487769759] [2023-11-29 05:07:30,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:30,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:07:30,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:30,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:07:30,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:07:30,965 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:07:31,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:31,037 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2023-11-29 05:07:31,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:07:31,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 05:07:31,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:31,040 INFO L225 Difference]: With dead ends: 63 [2023-11-29 05:07:31,040 INFO L226 Difference]: Without dead ends: 63 [2023-11-29 05:07:31,041 INFO L412 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 [2023-11-29 05:07:31,043 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:31,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 93 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:07:31,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-29 05:07:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-29 05:07:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 59 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2023-11-29 05:07:31,053 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 6 [2023-11-29 05:07:31,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:31,053 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2023-11-29 05:07:31,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:07:31,054 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2023-11-29 05:07:31,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 05:07:31,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:31,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:31,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:07:31,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:31,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1484371925, now seen corresponding path program 1 times [2023-11-29 05:07:31,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:31,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958321175] [2023-11-29 05:07:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:31,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:31,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:07:31,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:31,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958321175] [2023-11-29 05:07:31,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958321175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:31,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:31,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:07:31,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999129154] [2023-11-29 05:07:31,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:31,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:07:31,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:31,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:07:31,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:07:31,241 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 05:07:31,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:31,435 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2023-11-29 05:07:31,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:07:31,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-29 05:07:31,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:31,438 INFO L225 Difference]: With dead ends: 65 [2023-11-29 05:07:31,438 INFO L226 Difference]: Without dead ends: 65 [2023-11-29 05:07:31,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:07:31,440 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:31,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 211 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:07:31,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-29 05:07:31,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2023-11-29 05:07:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 58 states have internal predecessors, (63), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:31,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2023-11-29 05:07:31,449 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 10 [2023-11-29 05:07:31,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:31,450 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2023-11-29 05:07:31,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 05:07:31,450 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2023-11-29 05:07:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 05:07:31,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:31,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:31,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:07:31,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:31,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:31,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1484371926, now seen corresponding path program 1 times [2023-11-29 05:07:31,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:31,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92429848] [2023-11-29 05:07:31,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:31,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:31,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:07:31,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:31,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92429848] [2023-11-29 05:07:31,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92429848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:31,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:31,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:07:31,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556830866] [2023-11-29 05:07:31,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:31,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:07:31,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:31,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:07:31,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:07:31,716 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 05:07:31,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:31,911 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2023-11-29 05:07:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:07:31,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-29 05:07:31,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:31,913 INFO L225 Difference]: With dead ends: 64 [2023-11-29 05:07:31,913 INFO L226 Difference]: Without dead ends: 64 [2023-11-29 05:07:31,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:07:31,915 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 4 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:31,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 227 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:07:31,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-29 05:07:31,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2023-11-29 05:07:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 33 states have (on average 1.878787878787879) internal successors, (62), 57 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2023-11-29 05:07:31,922 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 10 [2023-11-29 05:07:31,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:31,923 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2023-11-29 05:07:31,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 05:07:31,923 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2023-11-29 05:07:31,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 05:07:31,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:31,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:31,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:07:31,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:31,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:31,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1567264208, now seen corresponding path program 1 times [2023-11-29 05:07:31,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:31,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988939474] [2023-11-29 05:07:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:31,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:07:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:07:31,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:31,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988939474] [2023-11-29 05:07:31,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988939474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:31,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:31,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:07:31,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007001635] [2023-11-29 05:07:31,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:31,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:07:31,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:31,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:07:31,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:07:31,996 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 05:07:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:32,083 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2023-11-29 05:07:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:07:32,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-29 05:07:32,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:32,084 INFO L225 Difference]: With dead ends: 65 [2023-11-29 05:07:32,084 INFO L226 Difference]: Without dead ends: 65 [2023-11-29 05:07:32,085 INFO L412 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 [2023-11-29 05:07:32,086 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 2 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:32,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 128 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:07:32,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-29 05:07:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2023-11-29 05:07:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 58 states have internal predecessors, (63), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2023-11-29 05:07:32,093 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 11 [2023-11-29 05:07:32,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:32,094 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2023-11-29 05:07:32,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 05:07:32,094 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2023-11-29 05:07:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 05:07:32,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:32,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:32,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:07:32,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:32,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:32,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1291342141, now seen corresponding path program 1 times [2023-11-29 05:07:32,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:32,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781118466] [2023-11-29 05:07:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:32,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:32,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:32,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:07:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:07:32,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:32,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781118466] [2023-11-29 05:07:32,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781118466] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:07:32,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874703959] [2023-11-29 05:07:32,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:32,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:32,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:32,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:32,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:07:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:32,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:07:32,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:07:32,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:07:32,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874703959] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:07:32,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:07:32,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2023-11-29 05:07:32,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545865559] [2023-11-29 05:07:32,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:07:32,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:07:32,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:32,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:07:32,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:07:32,454 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 05:07:32,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:32,544 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2023-11-29 05:07:32,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:07:32,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-29 05:07:32,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:32,546 INFO L225 Difference]: With dead ends: 66 [2023-11-29 05:07:32,546 INFO L226 Difference]: Without dead ends: 66 [2023-11-29 05:07:32,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:07:32,548 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 2 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:32,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 127 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:07:32,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-29 05:07:32,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-11-29 05:07:32,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 61 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:07:32,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2023-11-29 05:07:32,555 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 20 [2023-11-29 05:07:32,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:32,555 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2023-11-29 05:07:32,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 05:07:32,555 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2023-11-29 05:07:32,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 05:07:32,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:32,556 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:32,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:07:32,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:32,757 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:32,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:32,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2139416464, now seen corresponding path program 2 times [2023-11-29 05:07:32,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:32,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948296632] [2023-11-29 05:07:32,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:32,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:33,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:33,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:07:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:33,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:07:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:07:33,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:33,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948296632] [2023-11-29 05:07:33,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948296632] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:07:33,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369500075] [2023-11-29 05:07:33,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:07:33,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:33,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:33,377 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:33,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:07:33,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:07:33,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:07:33,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 05:07:33,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:33,615 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 [2023-11-29 05:07:33,729 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 05:07:33,730 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 [2023-11-29 05:07:33,839 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 05:07:33,840 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 [2023-11-29 05:07:33,884 WARN L876 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true [2023-11-29 05:07:33,911 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 05:07:33,911 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 12 treesize of output 14 [2023-11-29 05:07:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 8 not checked. [2023-11-29 05:07:33,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:07:34,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369500075] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:07:34,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:07:34,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 19 [2023-11-29 05:07:34,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749187188] [2023-11-29 05:07:34,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:34,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:07:34,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:34,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:07:34,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=303, Unknown=1, NotChecked=36, Total=420 [2023-11-29 05:07:34,471 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:34,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:34,663 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2023-11-29 05:07:34,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:07:34,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-11-29 05:07:34,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:34,665 INFO L225 Difference]: With dead ends: 73 [2023-11-29 05:07:34,665 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 05:07:34,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=335, Unknown=1, NotChecked=38, Total=462 [2023-11-29 05:07:34,666 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 53 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:34,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 135 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:07:34,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 05:07:34,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2023-11-29 05:07:34,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 57 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:07:34,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2023-11-29 05:07:34,672 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 29 [2023-11-29 05:07:34,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:34,673 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2023-11-29 05:07:34,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:34,673 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2023-11-29 05:07:34,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 05:07:34,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:34,674 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:34,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:07:34,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:34,880 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:34,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2139416463, now seen corresponding path program 1 times [2023-11-29 05:07:34,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:34,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754792776] [2023-11-29 05:07:34,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:34,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:35,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:35,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:07:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:35,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:07:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:07:35,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:35,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754792776] [2023-11-29 05:07:35,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754792776] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:07:35,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900034950] [2023-11-29 05:07:35,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:35,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:35,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:35,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:35,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:07:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:35,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 05:07:35,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:35,703 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 [2023-11-29 05:07:35,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 05:07:35,741 WARN L876 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|))) is different from true [2023-11-29 05:07:35,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:07:35,781 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 [2023-11-29 05:07:35,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 05:07:35,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:07:35,856 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 [2023-11-29 05:07:35,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 05:07:35,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:07:35,943 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 [2023-11-29 05:07:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:07:35,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:07:35,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900034950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:35,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:07:35,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-11-29 05:07:35,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048374388] [2023-11-29 05:07:35,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:35,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:07:35,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:35,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:07:35,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=68, Unknown=1, NotChecked=16, Total=110 [2023-11-29 05:07:35,953 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:36,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:36,062 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2023-11-29 05:07:36,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:07:36,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-11-29 05:07:36,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:36,063 INFO L225 Difference]: With dead ends: 60 [2023-11-29 05:07:36,063 INFO L226 Difference]: Without dead ends: 60 [2023-11-29 05:07:36,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=83, Unknown=1, NotChecked=18, Total=132 [2023-11-29 05:07:36,064 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 5 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:36,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 157 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 78 Unchecked, 0.1s Time] [2023-11-29 05:07:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-29 05:07:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-29 05:07:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 55 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:07:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2023-11-29 05:07:36,070 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 29 [2023-11-29 05:07:36,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:36,070 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2023-11-29 05:07:36,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:36,070 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2023-11-29 05:07:36,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 05:07:36,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:36,071 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:36,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:07:36,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:36,272 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:36,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:36,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1897400943, now seen corresponding path program 1 times [2023-11-29 05:07:36,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:36,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96436635] [2023-11-29 05:07:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:36,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:36,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:36,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:07:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:36,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:07:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:07:36,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:36,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96436635] [2023-11-29 05:07:36,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96436635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:36,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:36,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:07:36,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831445546] [2023-11-29 05:07:36,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:36,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:07:36,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:36,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:07:36,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:07:36,546 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 7 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 05:07:36,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:36,672 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2023-11-29 05:07:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:07:36,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-11-29 05:07:36,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:36,674 INFO L225 Difference]: With dead ends: 59 [2023-11-29 05:07:36,674 INFO L226 Difference]: Without dead ends: 59 [2023-11-29 05:07:36,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:07:36,675 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:36,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 186 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:07:36,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-29 05:07:36,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-29 05:07:36,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 54 states have internal predecessors, (59), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:07:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2023-11-29 05:07:36,680 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 30 [2023-11-29 05:07:36,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:36,680 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2023-11-29 05:07:36,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 05:07:36,681 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2023-11-29 05:07:36,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 05:07:36,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:36,682 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:36,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:07:36,683 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:36,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:36,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1897400944, now seen corresponding path program 1 times [2023-11-29 05:07:36,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:36,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092084865] [2023-11-29 05:07:36,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:36,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:36,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:36,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:07:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:07:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 05:07:36,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:36,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092084865] [2023-11-29 05:07:36,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092084865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:36,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:36,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:07:36,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922620613] [2023-11-29 05:07:36,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:36,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:07:36,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:36,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:07:36,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:07:36,833 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 05:07:36,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:36,954 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2023-11-29 05:07:36,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:07:36,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-11-29 05:07:36,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:36,955 INFO L225 Difference]: With dead ends: 58 [2023-11-29 05:07:36,956 INFO L226 Difference]: Without dead ends: 58 [2023-11-29 05:07:36,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:07:36,957 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:36,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 178 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:07:36,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-29 05:07:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-29 05:07:36,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 53 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:07:36,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2023-11-29 05:07:36,962 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 30 [2023-11-29 05:07:36,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:36,962 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2023-11-29 05:07:36,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 05:07:36,962 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2023-11-29 05:07:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 05:07:36,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:36,964 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:36,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:07:36,964 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:36,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:36,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1958912790, now seen corresponding path program 1 times [2023-11-29 05:07:36,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:36,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209265472] [2023-11-29 05:07:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:36,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:37,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:37,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:07:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:37,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:07:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:07:37,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:37,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209265472] [2023-11-29 05:07:37,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209265472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:37,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:37,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:07:37,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929247235] [2023-11-29 05:07:37,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:37,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:07:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:07:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:07:37,250 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:37,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:37,352 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2023-11-29 05:07:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:07:37,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2023-11-29 05:07:37,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:37,353 INFO L225 Difference]: With dead ends: 56 [2023-11-29 05:07:37,354 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 05:07:37,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:07:37,355 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 76 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:37,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 99 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:07:37,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 05:07:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-29 05:07:37,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 51 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:07:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2023-11-29 05:07:37,360 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 32 [2023-11-29 05:07:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:37,361 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2023-11-29 05:07:37,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2023-11-29 05:07:37,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 05:07:37,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:37,363 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:37,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:07:37,363 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:37,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:37,364 INFO L85 PathProgramCache]: Analyzing trace with hash 596757831, now seen corresponding path program 1 times [2023-11-29 05:07:37,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:37,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327892575] [2023-11-29 05:07:37,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:37,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:37,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:37,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:07:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:07:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 05:07:37,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:37,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327892575] [2023-11-29 05:07:37,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327892575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:37,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:37,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:07:37,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456368160] [2023-11-29 05:07:37,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:37,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:07:37,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:37,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:07:37,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:07:37,694 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 10 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:37,869 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2023-11-29 05:07:37,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:07:37,870 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-29 05:07:37,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:37,871 INFO L225 Difference]: With dead ends: 68 [2023-11-29 05:07:37,871 INFO L226 Difference]: Without dead ends: 68 [2023-11-29 05:07:37,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:07:37,872 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 48 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:37,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 198 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:07:37,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-29 05:07:37,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 53. [2023-11-29 05:07:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 48 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:07:37,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2023-11-29 05:07:37,875 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 33 [2023-11-29 05:07:37,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:37,876 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2023-11-29 05:07:37,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:37,876 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2023-11-29 05:07:37,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 05:07:37,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:37,877 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:37,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:07:37,878 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:37,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:37,878 INFO L85 PathProgramCache]: Analyzing trace with hash 596757832, now seen corresponding path program 1 times [2023-11-29 05:07:37,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:37,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869320733] [2023-11-29 05:07:37,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:37,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:38,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:38,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:07:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:38,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:07:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:38,365 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:07:38,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:38,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869320733] [2023-11-29 05:07:38,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869320733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:38,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:38,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:07:38,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094536088] [2023-11-29 05:07:38,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:38,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:07:38,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:38,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:07:38,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:07:38,368 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 10 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:38,519 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2023-11-29 05:07:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:07:38,520 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-29 05:07:38,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:38,521 INFO L225 Difference]: With dead ends: 55 [2023-11-29 05:07:38,521 INFO L226 Difference]: Without dead ends: 55 [2023-11-29 05:07:38,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:07:38,522 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 41 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:38,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 158 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:07:38,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-29 05:07:38,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2023-11-29 05:07:38,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:07:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2023-11-29 05:07:38,526 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 33 [2023-11-29 05:07:38,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:38,526 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2023-11-29 05:07:38,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2023-11-29 05:07:38,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 05:07:38,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:38,528 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:38,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:07:38,528 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:38,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:38,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1070939943, now seen corresponding path program 1 times [2023-11-29 05:07:38,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:38,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348158944] [2023-11-29 05:07:38,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:38,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:39,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:39,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:07:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:39,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:07:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:07:39,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:39,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348158944] [2023-11-29 05:07:39,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348158944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:39,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:39,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:07:39,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370252935] [2023-11-29 05:07:39,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:39,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:07:39,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:39,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:07:39,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:07:39,208 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:39,439 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2023-11-29 05:07:39,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:07:39,439 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-11-29 05:07:39,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:39,440 INFO L225 Difference]: With dead ends: 51 [2023-11-29 05:07:39,440 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 05:07:39,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:07:39,441 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 36 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:39,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 238 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:07:39,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 05:07:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-29 05:07:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 46 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:07:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2023-11-29 05:07:39,444 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 37 [2023-11-29 05:07:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:39,444 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2023-11-29 05:07:39,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 05:07:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2023-11-29 05:07:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 05:07:39,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:39,445 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:39,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:07:39,446 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:39,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1071031433, now seen corresponding path program 1 times [2023-11-29 05:07:39,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:39,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346535731] [2023-11-29 05:07:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:39,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:40,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:40,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:07:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:40,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:07:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 05:07:40,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346535731] [2023-11-29 05:07:40,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346535731] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:07:40,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35337261] [2023-11-29 05:07:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:40,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:40,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:40,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:40,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:07:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:40,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-29 05:07:40,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:40,796 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 [2023-11-29 05:07:40,961 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 9 treesize of output 3 [2023-11-29 05:07:41,053 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-29 05:07:41,054 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 18 treesize of output 21 [2023-11-29 05:07:41,237 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 17 treesize of output 13 [2023-11-29 05:07:41,305 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 [2023-11-29 05:07:41,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 23 [2023-11-29 05:07:41,359 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 36 treesize of output 24 [2023-11-29 05:07:41,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-11-29 05:07:41,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 05:07:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:07:41,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:41,495 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 64 [2023-11-29 05:07:45,515 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_sll_prepend_~head#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|)) (.cse2 (select |c_#memory_$Pointer$#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (.cse1 (= |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (and (or (not .cse0) (not .cse1)) (forall ((v_arrayElimCell_16 Int)) (= (select |c_#valid| (select .cse2 (+ 4 v_arrayElimCell_16))) 1))) (and .cse0 (= (select |c_#valid| (select .cse2 (+ 4 |c_ULTIMATE.start_sll_prepend_~new_head~1#1.offset|))) 1) .cse1))) is different from false [2023-11-29 05:07:45,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:07:45,544 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 150 treesize of output 122 [2023-11-29 05:07:50,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35337261] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:07:50,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:07:50,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 32 [2023-11-29 05:07:50,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414096535] [2023-11-29 05:07:50,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:07:50,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 05:07:50,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:50,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 05:07:50,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1278, Unknown=2, NotChecked=72, Total=1482 [2023-11-29 05:07:50,207 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 33 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 27 states have internal predecessors, (51), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 05:07:51,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:51,026 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2023-11-29 05:07:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:07:51,026 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 27 states have internal predecessors, (51), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37 [2023-11-29 05:07:51,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:51,027 INFO L225 Difference]: With dead ends: 82 [2023-11-29 05:07:51,027 INFO L226 Difference]: Without dead ends: 82 [2023-11-29 05:07:51,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=232, Invalid=2026, Unknown=2, NotChecked=92, Total=2352 [2023-11-29 05:07:51,030 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 201 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:51,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 389 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:07:51,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-29 05:07:51,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 53. [2023-11-29 05:07:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 48 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:07:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2023-11-29 05:07:51,033 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 37 [2023-11-29 05:07:51,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:51,034 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2023-11-29 05:07:51,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 27 states have internal predecessors, (51), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 05:07:51,034 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2023-11-29 05:07:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 05:07:51,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:51,035 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:51,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:07:51,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:07:51,238 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:51,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1071031434, now seen corresponding path program 1 times [2023-11-29 05:07:51,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:51,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507046597] [2023-11-29 05:07:51,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:51,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:52,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:52,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:07:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:07:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:07:52,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:52,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507046597] [2023-11-29 05:07:52,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507046597] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:07:52,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618873634] [2023-11-29 05:07:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:52,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:52,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:52,666 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:52,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:07:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:52,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 80 conjunts are in the unsatisfiable core [2023-11-29 05:07:52,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:52,908 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 [2023-11-29 05:07:53,227 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 9 treesize of output 3 [2023-11-29 05:07:53,230 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 9 treesize of output 3 [2023-11-29 05:07:53,423 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-29 05:07:53,423 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 18 treesize of output 21 [2023-11-29 05:07:53,448 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-29 05:07:53,448 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 15 treesize of output 15 [2023-11-29 05:07:53,706 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 17 treesize of output 13 [2023-11-29 05:07:53,723 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 17 treesize of output 13 [2023-11-29 05:07:53,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 31 [2023-11-29 05:07:53,862 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2023-11-29 05:07:53,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 18 [2023-11-29 05:07:53,957 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 66 treesize of output 46 [2023-11-29 05:07:53,961 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 50 treesize of output 34 [2023-11-29 05:07:54,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-29 05:07:54,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 05:07:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:07:54,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:54,374 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 106 treesize of output 76 [2023-11-29 05:07:54,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:07:54,394 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 158 treesize of output 128 [2023-11-29 05:07:54,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:07:54,400 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 190 treesize of output 130 [2023-11-29 05:07:55,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618873634] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:07:55,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:07:55,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2023-11-29 05:07:55,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718573182] [2023-11-29 05:07:55,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:07:55,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 05:07:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:55,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 05:07:55,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1854, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 05:07:55,014 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 38 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 32 states have internal predecessors, (57), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 05:07:56,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:56,640 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2023-11-29 05:07:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:07:56,640 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 32 states have internal predecessors, (57), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37 [2023-11-29 05:07:56,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:56,641 INFO L225 Difference]: With dead ends: 79 [2023-11-29 05:07:56,641 INFO L226 Difference]: Without dead ends: 79 [2023-11-29 05:07:56,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=256, Invalid=3404, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 05:07:56,644 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 144 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:56,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 612 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:07:56,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-29 05:07:56,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 59. [2023-11-29 05:07:56,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 53 states have internal predecessors, (58), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:07:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2023-11-29 05:07:56,648 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 37 [2023-11-29 05:07:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:56,648 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2023-11-29 05:07:56,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 32 states have internal predecessors, (57), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 05:07:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2023-11-29 05:07:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 05:07:56,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:56,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:56,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:07:56,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:07:56,850 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:07:56,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:56,851 INFO L85 PathProgramCache]: Analyzing trace with hash -215880490, now seen corresponding path program 1 times [2023-11-29 05:07:56,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:56,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623149848] [2023-11-29 05:07:56,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:56,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:57,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:07:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:57,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:07:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:57,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:07:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:07:57,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:57,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623149848] [2023-11-29 05:07:57,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623149848] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:07:57,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707228305] [2023-11-29 05:07:57,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:57,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:57,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:57,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:57,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:07:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:57,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 05:07:57,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:58,179 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 17 treesize of output 13 [2023-11-29 05:07:58,225 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 [2023-11-29 05:07:58,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 22 [2023-11-29 05:07:58,266 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 [2023-11-29 05:07:58,269 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 [2023-11-29 05:07:58,276 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 8 [2023-11-29 05:07:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:07:58,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:58,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2023-11-29 05:08:02,387 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 50 [2023-11-29 05:08:02,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 42 [2023-11-29 05:08:02,471 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 [2023-11-29 05:08:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:08:02,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707228305] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:08:02,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:08:02,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 13] total 31 [2023-11-29 05:08:02,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300289539] [2023-11-29 05:08:02,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:08:02,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 05:08:02,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:02,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 05:08:02,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=842, Unknown=1, NotChecked=0, Total=930 [2023-11-29 05:08:02,494 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand has 31 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 27 states have internal predecessors, (57), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 05:08:06,503 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] [2023-11-29 05:08:10,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:08:14,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:08:18,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:08:22,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:08:26,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:08:30,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:08:34,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:08:38,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:08:43,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:08:47,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:08:47,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:47,193 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2023-11-29 05:08:47,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:08:47,193 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 27 states have internal predecessors, (57), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) Word has length 40 [2023-11-29 05:08:47,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:47,194 INFO L225 Difference]: With dead ends: 64 [2023-11-29 05:08:47,194 INFO L226 Difference]: Without dead ends: 64 [2023-11-29 05:08:47,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=195, Invalid=1784, Unknown=1, NotChecked=0, Total=1980 [2023-11-29 05:08:47,195 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 131 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:47,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 605 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 600 Invalid, 11 Unknown, 0 Unchecked, 44.4s Time] [2023-11-29 05:08:47,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-29 05:08:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2023-11-29 05:08:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 53 states have internal predecessors, (57), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:08:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2023-11-29 05:08:47,199 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 40 [2023-11-29 05:08:47,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:47,199 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2023-11-29 05:08:47,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 27 states have internal predecessors, (57), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 05:08:47,199 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2023-11-29 05:08:47,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 05:08:47,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:47,200 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:47,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:08:47,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:08:47,406 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:08:47,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:47,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2016344326, now seen corresponding path program 1 times [2023-11-29 05:08:47,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:47,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051194962] [2023-11-29 05:08:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:47,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:48,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:08:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:48,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:08:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:08:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:08:49,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:49,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051194962] [2023-11-29 05:08:49,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051194962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:08:49,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769894430] [2023-11-29 05:08:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:49,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:49,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:49,085 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:49,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:08:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:49,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 138 conjunts are in the unsatisfiable core [2023-11-29 05:08:49,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:49,351 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 [2023-11-29 05:08:49,574 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 [2023-11-29 05:08:49,579 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 [2023-11-29 05:08:49,633 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 [2023-11-29 05:08:49,639 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 [2023-11-29 05:08:49,717 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 05:08:49,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-29 05:08:49,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 05:08:49,893 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 [2023-11-29 05:08:50,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-11-29 05:08:50,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-11-29 05:08:50,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 05:08:50,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:08:50,398 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 38 treesize of output 27 [2023-11-29 05:08:50,434 INFO L349 Elim1Store]: treesize reduction 72, result has 37.4 percent of original size [2023-11-29 05:08:50,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 57 [2023-11-29 05:08:50,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 05:08:50,949 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 59 treesize of output 42 [2023-11-29 05:08:50,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2023-11-29 05:08:51,128 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2023-11-29 05:08:51,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 18 [2023-11-29 05:08:51,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 67 [2023-11-29 05:08:51,238 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 181 treesize of output 133 [2023-11-29 05:08:51,244 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 132 treesize of output 96 [2023-11-29 05:08:51,557 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 05:08:51,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 36 [2023-11-29 05:08:51,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2023-11-29 05:08:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:08:51,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:08:54,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:08:54,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 523 treesize of output 507 [2023-11-29 05:08:54,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:08:54,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 460 treesize of output 444 [2023-11-29 05:08:54,410 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-29 05:08:54,410 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 2 case distinctions, treesize of input 35 treesize of output 8 [2023-11-29 05:08:54,492 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-29 05:08:54,492 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 2 case distinctions, treesize of input 35 treesize of output 8 [2023-11-29 05:08:55,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769894430] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:08:55,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:08:55,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30] total 55 [2023-11-29 05:08:55,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976486035] [2023-11-29 05:08:55,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:08:55,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-11-29 05:08:55,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:55,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-11-29 05:08:55,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=4158, Unknown=0, NotChecked=0, Total=4422 [2023-11-29 05:08:55,207 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 56 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 47 states have internal predecessors, (70), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 05:08:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:58,561 INFO L93 Difference]: Finished difference Result 109 states and 116 transitions. [2023-11-29 05:08:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 05:08:58,561 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 47 states have internal predecessors, (70), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2023-11-29 05:08:58,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:58,562 INFO L225 Difference]: With dead ends: 109 [2023-11-29 05:08:58,562 INFO L226 Difference]: Without dead ends: 109 [2023-11-29 05:08:58,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2097 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=557, Invalid=7453, Unknown=0, NotChecked=0, Total=8010 [2023-11-29 05:08:58,565 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 278 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:58,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 682 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 05:08:58,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-29 05:08:58,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 62. [2023-11-29 05:08:58,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 56 states have internal predecessors, (63), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:08:58,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2023-11-29 05:08:58,569 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 41 [2023-11-29 05:08:58,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:58,569 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2023-11-29 05:08:58,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 47 states have internal predecessors, (70), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 05:08:58,569 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2023-11-29 05:08:58,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 05:08:58,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:58,570 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:58,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:08:58,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 05:08:58,771 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:08:58,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:58,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2016344327, now seen corresponding path program 1 times [2023-11-29 05:08:58,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:58,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823589071] [2023-11-29 05:08:58,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:58,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:00,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:09:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:09:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:09:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:09:00,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:00,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823589071] [2023-11-29 05:09:00,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823589071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:09:00,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285664459] [2023-11-29 05:09:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:00,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:09:00,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:09:00,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:09:00,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:09:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:01,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 134 conjunts are in the unsatisfiable core [2023-11-29 05:09:01,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:01,170 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 [2023-11-29 05:09:01,611 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 05:09:01,611 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 [2023-11-29 05:09:01,629 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 05:09:01,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-29 05:09:01,774 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 [2023-11-29 05:09:01,783 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 [2023-11-29 05:09:01,995 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 43 treesize of output 19 [2023-11-29 05:09:02,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 05:09:02,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-11-29 05:09:02,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 05:09:02,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:02,442 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 51 treesize of output 34 [2023-11-29 05:09:02,461 INFO L349 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-11-29 05:09:02,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2023-11-29 05:09:02,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-29 05:09:02,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 05:09:02,956 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 59 treesize of output 42 [2023-11-29 05:09:02,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2023-11-29 05:09:03,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 62 [2023-11-29 05:09:03,147 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2023-11-29 05:09:03,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 18 [2023-11-29 05:09:03,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 118 [2023-11-29 05:09:03,269 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 117 treesize of output 85 [2023-11-29 05:09:03,589 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 05:09:03,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 31 [2023-11-29 05:09:03,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2023-11-29 05:09:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:03,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:07,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:09:07,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 414 treesize of output 425 [2023-11-29 05:09:07,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:09:07,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 378 treesize of output 362 [2023-11-29 05:09:07,335 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-29 05:09:07,335 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 2 case distinctions, treesize of input 35 treesize of output 8 [2023-11-29 05:09:07,452 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-29 05:09:07,452 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 2 case distinctions, treesize of input 35 treesize of output 8 [2023-11-29 05:09:08,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285664459] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:09:08,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:09:08,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2023-11-29 05:09:08,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213517575] [2023-11-29 05:09:08,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:09:08,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-29 05:09:08,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:08,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-29 05:09:08,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=4490, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 05:09:08,097 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 58 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 05:09:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:12,584 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2023-11-29 05:09:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 05:09:12,585 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2023-11-29 05:09:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:12,585 INFO L225 Difference]: With dead ends: 90 [2023-11-29 05:09:12,586 INFO L226 Difference]: Without dead ends: 90 [2023-11-29 05:09:12,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=502, Invalid=8428, Unknown=0, NotChecked=0, Total=8930 [2023-11-29 05:09:12,590 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 283 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:12,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1190 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 05:09:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-29 05:09:12,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2023-11-29 05:09:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 48 states have (on average 1.3125) internal successors, (63), 57 states have internal predecessors, (63), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:09:12,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2023-11-29 05:09:12,593 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 41 [2023-11-29 05:09:12,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:12,593 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2023-11-29 05:09:12,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 05:09:12,593 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2023-11-29 05:09:12,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 05:09:12,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:12,594 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-29 05:09:12,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:09:12,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:09:12,794 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:09:12,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:12,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1917846097, now seen corresponding path program 1 times [2023-11-29 05:09:12,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:12,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067993165] [2023-11-29 05:09:12,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:12,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:13,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:09:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:13,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:09:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:09:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:09:13,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:13,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067993165] [2023-11-29 05:09:13,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067993165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:09:13,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683377688] [2023-11-29 05:09:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:13,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:09:13,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:09:13,897 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:09:13,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:09:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:14,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 97 conjunts are in the unsatisfiable core [2023-11-29 05:09:14,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:14,141 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 [2023-11-29 05:09:14,155 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 [2023-11-29 05:09:14,241 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 [2023-11-29 05:09:14,345 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 9 treesize of output 3 [2023-11-29 05:09:14,348 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 [2023-11-29 05:09:14,560 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-29 05:09:14,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-11-29 05:09:14,579 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-29 05:09:14,579 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 15 treesize of output 15 [2023-11-29 05:09:14,816 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 17 treesize of output 13 [2023-11-29 05:09:14,822 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 20 treesize of output 15 [2023-11-29 05:09:14,829 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 17 treesize of output 13 [2023-11-29 05:09:14,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 33 [2023-11-29 05:09:14,951 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2023-11-29 05:09:14,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 18 [2023-11-29 05:09:15,018 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 [2023-11-29 05:09:15,020 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 [2023-11-29 05:09:15,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 05:09:15,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 05:09:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:09:15,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:15,338 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 196 treesize of output 166 [2023-11-29 05:09:15,341 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 298 treesize of output 238 [2023-11-29 05:09:15,449 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_prepend_~head#1.base|))) (let ((.cse4 (and (forall ((v_arrayElimCell_111 Int) (v_ArrVal_2312 (Array Int Int)) (v_arrayElimCell_112 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| v_ArrVal_2312) v_arrayElimCell_111) v_arrayElimCell_112))) (forall ((v_arrayElimCell_111 Int) (v_ArrVal_2312 (Array Int Int)) (v_arrayElimCell_112 Int)) (let ((.cse8 (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| v_ArrVal_2312) v_arrayElimCell_111))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select .cse8 v_arrayElimCell_112)) (= |c_ULTIMATE.start_main_~data~0#1| (select .cse8 |c_ULTIMATE.start_sll_prepend_#t~mem8#1.offset|))))))) (.cse5 (forall ((|ULTIMATE.start_sll_prepend_~new_head~1#1.offset| Int)) (= |ULTIMATE.start_sll_prepend_~new_head~1#1.offset| (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_prepend_~head#1.base| (store .cse6 |c_ULTIMATE.start_sll_prepend_~head#1.offset| |ULTIMATE.start_sll_prepend_~new_head~1#1.offset|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (.cse0 (forall ((v_arrayElimCell_111 Int) (v_ArrVal_2312 (Array Int Int)) (v_arrayElimCell_112 Int)) (let ((.cse7 (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| v_ArrVal_2312))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select .cse7 v_arrayElimCell_111) v_arrayElimCell_112)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select .cse7 |c_ULTIMATE.start_sll_prepend_#t~mem8#1.base|) |c_ULTIMATE.start_sll_prepend_#t~mem8#1.offset|)))))) (.cse1 (= |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (and (or .cse0 .cse1) (forall ((v_ArrVal_2312 (Array Int Int))) (let ((.cse3 (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| v_ArrVal_2312))) (or (forall ((v_arrayElimCell_111 Int) (v_arrayElimCell_112 Int)) (let ((.cse2 (select .cse3 v_arrayElimCell_111))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select .cse2 v_arrayElimCell_112)) (= |c_ULTIMATE.start_main_~data~0#1| (select .cse2 |c_ULTIMATE.start_sll_prepend_#t~mem8#1.offset|))))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select .cse3 |c_ULTIMATE.start_sll_prepend_#t~mem8#1.base|) |c_ULTIMATE.start_sll_prepend_#t~mem8#1.offset|))))) (or .cse1 .cse4) (or .cse5 .cse4) (or .cse5 .cse0) (or (not .cse1) (forall ((|ULTIMATE.start_sll_prepend_~new_head~1#1.offset| Int)) (not (= |ULTIMATE.start_sll_prepend_~new_head~1#1.offset| (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_prepend_~head#1.base| (store .cse6 |c_ULTIMATE.start_sll_prepend_~head#1.offset| |ULTIMATE.start_sll_prepend_~new_head~1#1.offset|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (forall ((v_ArrVal_2312 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| v_ArrVal_2312) |c_ULTIMATE.start_sll_prepend_#t~mem8#1.base|) |c_ULTIMATE.start_sll_prepend_#t~mem8#1.offset|))))))) is different from false [2023-11-29 05:09:15,542 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse8 (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_prepend_~head#1.base|)) (.cse10 (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_prepend_~head#1.base|))) (let ((.cse7 (select .cse10 |c_ULTIMATE.start_sll_prepend_~head#1.offset|)) (.cse5 (select .cse8 |c_ULTIMATE.start_sll_prepend_~head#1.offset|))) (let ((.cse0 (forall ((|ULTIMATE.start_sll_prepend_~new_head~1#1.offset| Int)) (= |ULTIMATE.start_sll_prepend_~new_head~1#1.offset| (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_prepend_~head#1.base| (store .cse8 |c_ULTIMATE.start_sll_prepend_~head#1.offset| |ULTIMATE.start_sll_prepend_~new_head~1#1.offset|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (.cse2 (forall ((v_arrayElimCell_111 Int) (v_ArrVal_2312 (Array Int Int)) (v_arrayElimCell_112 Int)) (let ((.cse11 (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| v_ArrVal_2312))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select .cse11 v_arrayElimCell_111) v_arrayElimCell_112)) (= (select (select .cse11 .cse7) .cse5) |c_ULTIMATE.start_main_~data~0#1|))))) (.cse3 (= |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_prepend_~head#1.base| (store .cse10 |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (.cse1 (and (forall ((v_arrayElimCell_111 Int) (v_ArrVal_2312 (Array Int Int)) (v_arrayElimCell_112 Int)) (let ((.cse9 (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| v_ArrVal_2312) v_arrayElimCell_111))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select .cse9 v_arrayElimCell_112)) (= |c_ULTIMATE.start_main_~data~0#1| (select .cse9 .cse5))))) (forall ((v_arrayElimCell_111 Int) (v_ArrVal_2312 (Array Int Int)) (v_arrayElimCell_112 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| v_ArrVal_2312) v_arrayElimCell_111) v_arrayElimCell_112)))))) (and (or .cse0 .cse1) (or .cse0 .cse2) (or .cse3 .cse2) (forall ((v_ArrVal_2312 (Array Int Int))) (let ((.cse6 (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| v_ArrVal_2312))) (or (forall ((v_arrayElimCell_111 Int) (v_arrayElimCell_112 Int)) (let ((.cse4 (select .cse6 v_arrayElimCell_111))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select .cse4 v_arrayElimCell_112)) (= |c_ULTIMATE.start_main_~data~0#1| (select .cse4 .cse5))))) (= (select (select .cse6 .cse7) .cse5) |c_ULTIMATE.start_main_~data~0#1|)))) (or (not .cse3) (forall ((v_ArrVal_2312 (Array Int Int))) (= (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| v_ArrVal_2312) .cse7) .cse5) |c_ULTIMATE.start_main_~data~0#1|)) (forall ((|ULTIMATE.start_sll_prepend_~new_head~1#1.offset| Int)) (not (= |ULTIMATE.start_sll_prepend_~new_head~1#1.offset| (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_prepend_~head#1.base| (store .cse8 |c_ULTIMATE.start_sll_prepend_~head#1.offset| |ULTIMATE.start_sll_prepend_~new_head~1#1.offset|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) (or .cse3 .cse1))))) is different from false [2023-11-29 05:09:15,604 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_prepend_~head#1.base|)) (.cse10 (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_prepend_~head#1.base|))) (let ((.cse1 (select .cse10 |c_ULTIMATE.start_sll_prepend_~head#1.offset|)) (.cse2 (select .cse0 |c_ULTIMATE.start_sll_prepend_~head#1.offset|))) (let ((.cse6 (forall ((|ULTIMATE.start_sll_prepend_~new_head~1#1.offset| Int)) (= |ULTIMATE.start_sll_prepend_~new_head~1#1.offset| (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_prepend_~head#1.base| (store .cse0 |c_ULTIMATE.start_sll_prepend_~head#1.offset| |ULTIMATE.start_sll_prepend_~new_head~1#1.offset|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (.cse8 (and (forall ((v_arrayElimCell_111 Int) (v_ArrVal_2312 (Array Int Int)) (v_arrayElimCell_112 Int)) (let ((.cse11 (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base| v_ArrVal_2312) v_arrayElimCell_111))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select .cse11 v_arrayElimCell_112)) (= |c_ULTIMATE.start_main_~data~0#1| (select .cse11 .cse2))))) (forall ((v_arrayElimCell_111 Int) (v_ArrVal_2312 (Array Int Int)) (v_arrayElimCell_112 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base| v_ArrVal_2312) v_arrayElimCell_111) v_arrayElimCell_112))))) (.cse3 (= (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sll_prepend_~head#1.base| (store .cse10 |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base|)) (.cse7 (forall ((v_arrayElimCell_111 Int) (v_ArrVal_2312 (Array Int Int)) (v_arrayElimCell_112 Int)) (let ((.cse9 (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base| v_ArrVal_2312))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select .cse9 v_arrayElimCell_111) v_arrayElimCell_112)) (= (select (select .cse9 .cse1) .cse2) |c_ULTIMATE.start_main_~data~0#1|)))))) (and (or (forall ((|ULTIMATE.start_sll_prepend_~new_head~1#1.offset| Int)) (not (= |ULTIMATE.start_sll_prepend_~new_head~1#1.offset| (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sll_prepend_~head#1.base| (store .cse0 |c_ULTIMATE.start_sll_prepend_~head#1.offset| |ULTIMATE.start_sll_prepend_~new_head~1#1.offset|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (forall ((v_ArrVal_2312 (Array Int Int))) (= (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base| v_ArrVal_2312) .cse1) .cse2) |c_ULTIMATE.start_main_~data~0#1|)) (not .cse3)) (forall ((v_ArrVal_2312 (Array Int Int))) (let ((.cse5 (store |c_#memory_int#1| |c_ULTIMATE.start_sll_prepend_#t~ret7#1.base| v_ArrVal_2312))) (or (forall ((v_arrayElimCell_111 Int) (v_arrayElimCell_112 Int)) (let ((.cse4 (select .cse5 v_arrayElimCell_111))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select .cse4 v_arrayElimCell_112)) (= |c_ULTIMATE.start_main_~data~0#1| (select .cse4 .cse2))))) (= (select (select .cse5 .cse1) .cse2) |c_ULTIMATE.start_main_~data~0#1|)))) (or .cse6 .cse7) (or .cse6 .cse8) (or .cse3 .cse8) (or .cse3 .cse7))))) is different from false [2023-11-29 05:09:16,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683377688] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:09:16,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:09:16,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 39 [2023-11-29 05:09:16,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891589674] [2023-11-29 05:09:16,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:09:16,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 05:09:16,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:16,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 05:09:16,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1703, Unknown=3, NotChecked=252, Total=2070 [2023-11-29 05:09:16,212 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 39 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 05:09:17,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:17,715 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2023-11-29 05:09:17,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 05:09:17,715 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 42 [2023-11-29 05:09:17,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:17,716 INFO L225 Difference]: With dead ends: 63 [2023-11-29 05:09:17,716 INFO L226 Difference]: Without dead ends: 63 [2023-11-29 05:09:17,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=243, Invalid=3426, Unknown=3, NotChecked=360, Total=4032 [2023-11-29 05:09:17,718 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 80 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:17,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 566 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:09:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-29 05:09:17,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-29 05:09:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 57 states have internal predecessors, (62), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:09:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2023-11-29 05:09:17,721 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 42 [2023-11-29 05:09:17,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:17,721 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2023-11-29 05:09:17,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 05:09:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2023-11-29 05:09:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 05:09:17,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:17,722 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-29 05:09:17,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:09:17,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:09:17,922 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:09:17,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:17,923 INFO L85 PathProgramCache]: Analyzing trace with hash -500044999, now seen corresponding path program 1 times [2023-11-29 05:09:17,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:17,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748270851] [2023-11-29 05:09:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:17,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:18,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:09:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:18,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:09:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:18,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:09:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:09:19,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:19,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748270851] [2023-11-29 05:09:19,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748270851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:09:19,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012153026] [2023-11-29 05:09:19,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:19,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:09:19,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:09:19,080 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:09:19,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3226d84-f550-4225-a815-49f60392757f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:09:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:19,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 101 conjunts are in the unsatisfiable core [2023-11-29 05:09:19,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:19,418 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 [2023-11-29 05:09:19,510 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 [2023-11-29 05:09:19,619 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 12 treesize of output 4 [2023-11-29 05:09:19,622 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 9 treesize of output 3 [2023-11-29 05:09:19,867 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-29 05:09:19,867 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 15 treesize of output 15 [2023-11-29 05:09:19,872 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 21 treesize of output 16 [2023-11-29 05:09:20,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2023-11-29 05:09:20,134 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 17 treesize of output 13 [2023-11-29 05:09:20,257 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2023-11-29 05:09:20,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 18 [2023-11-29 05:09:20,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 34 [2023-11-29 05:09:20,339 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 [2023-11-29 05:09:20,342 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 53 treesize of output 37 [2023-11-29 05:09:20,404 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 9 treesize of output 3 [2023-11-29 05:09:20,484 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 05:09:20,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 15 [2023-11-29 05:09:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:09:20,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:20,810 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 318 treesize of output 258 [2023-11-29 05:09:23,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:09:23,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 360 treesize of output 469 [2023-11-29 05:09:24,364 INFO L349 Elim1Store]: treesize reduction 129, result has 50.6 percent of original size [2023-11-29 05:09:24,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 287 treesize of output 504 [2023-11-29 05:09:32,685 INFO L349 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2023-11-29 05:09:32,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 258 treesize of output 223 [2023-11-29 05:09:34,961 INFO L349 Elim1Store]: treesize reduction 156, result has 39.3 percent of original size [2023-11-29 05:09:34,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 648 treesize of output 713 [2023-11-29 05:09:35,316 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:09:35,340 INFO L349 Elim1Store]: treesize reduction 72, result has 10.0 percent of original size [2023-11-29 05:09:35,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 105 treesize of output 43 [2023-11-29 05:09:35,590 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:09:35,600 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:09:37,343 INFO L349 Elim1Store]: treesize reduction 728, result has 25.4 percent of original size [2023-11-29 05:09:37,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 40 case distinctions, treesize of input 1329 treesize of output 1650 [2023-11-29 05:10:03,363 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:03,619 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:03,739 INFO L349 Elim1Store]: treesize reduction 150, result has 5.1 percent of original size [2023-11-29 05:10:03,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 16024 treesize of output 15985 [2023-11-29 05:10:04,350 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:04,356 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:04,541 INFO L349 Elim1Store]: treesize reduction 609, result has 25.0 percent of original size [2023-11-29 05:10:04,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 617 treesize of output 701 [2023-11-29 05:10:04,812 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:04,853 INFO L349 Elim1Store]: treesize reduction 88, result has 1.1 percent of original size [2023-11-29 05:10:04,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 137 treesize of output 94 [2023-11-29 05:10:04,893 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:04,894 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:04,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:04,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:04,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:04,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 67 [2023-11-29 05:10:05,078 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:05,094 INFO L349 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2023-11-29 05:10:05,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 106 treesize of output 63 [2023-11-29 05:10:05,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:05,713 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:05,724 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:05,729 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:05,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:05,897 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:05,897 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:05,897 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:05,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:05,951 INFO L349 Elim1Store]: treesize reduction 727, result has 0.1 percent of original size [2023-11-29 05:10:05,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 42 case distinctions, treesize of input 11601 treesize of output 1 [2023-11-29 05:10:06,103 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:06,104 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:06,104 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:06,105 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:06,106 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:06,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:06,296 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:06,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:06,298 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:06,298 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:06,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:06,357 INFO L349 Elim1Store]: treesize reduction 364, result has 0.3 percent of original size [2023-11-29 05:10:06,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 47614 treesize of output 1 [2023-11-29 05:10:06,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:06,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:06,603 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:06,603 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:06,604 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:07,029 INFO L349 Elim1Store]: treesize reduction 489, result has 38.6 percent of original size [2023-11-29 05:10:07,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 31 case distinctions, treesize of input 956 treesize of output 1173 [2023-11-29 05:10:08,250 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:08,250 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:08,251 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:08,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:08,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 94 [2023-11-29 05:10:08,320 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:08,321 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:08,321 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:08,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:08,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 94 [2023-11-29 05:10:08,382 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:08,383 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:08,383 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:08,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:08,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 94 [2023-11-29 05:10:09,280 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,280 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,281 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:09,283 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,286 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,287 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,287 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,293 INFO L349 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2023-11-29 05:10:09,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 229 treesize of output 1 [2023-11-29 05:10:09,315 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,316 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,317 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:09,318 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,322 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,322 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,323 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,328 INFO L349 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2023-11-29 05:10:09,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 229 treesize of output 1 [2023-11-29 05:10:09,343 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,343 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,344 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,347 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,351 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,351 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,352 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,352 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,385 INFO L349 Elim1Store]: treesize reduction 86, result has 8.5 percent of original size [2023-11-29 05:10:09,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 663 treesize of output 567 [2023-11-29 05:10:09,650 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,650 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,651 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,655 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,659 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,703 INFO L349 Elim1Store]: treesize reduction 86, result has 8.5 percent of original size [2023-11-29 05:10:09,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 1219 treesize of output 1035 [2023-11-29 05:10:09,810 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,810 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,811 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,811 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:09,816 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,816 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,817 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,821 INFO L349 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2023-11-29 05:10:09,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 241 treesize of output 1 [2023-11-29 05:10:09,839 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,839 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,840 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,840 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:10:09,844 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,845 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,845 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:09,849 INFO L349 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2023-11-29 05:10:09,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 241 treesize of output 1 [2023-11-29 05:10:10,183 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:10,183 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:10,184 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:10,185 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:10,186 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:10,187 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:10,213 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:10,213 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:10,214 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:10,214 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:10,215 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:10,215 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:10,251 INFO L349 Elim1Store]: treesize reduction 242, result has 0.4 percent of original size [2023-11-29 05:10:10,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 8988 treesize of output 1 [2023-11-29 05:10:15,393 INFO L349 Elim1Store]: treesize reduction 100, result has 52.6 percent of original size [2023-11-29 05:10:15,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 881 treesize of output 1189 [2023-11-29 05:10:19,543 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 05:10:19,543 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 17 [2023-11-29 05:10:20,159 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 05:10:20,159 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 17 [2023-11-29 05:10:20,473 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 05:10:20,473 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 17 [2023-11-29 05:10:20,540 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 05:10:20,540 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 17 [2023-11-29 05:10:21,371 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 05:10:21,371 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 17 [2023-11-29 05:10:21,479 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 05:10:21,479 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 17 [2023-11-29 05:10:22,103 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 05:10:22,104 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 17 [2023-11-29 05:10:28,464 INFO L349 Elim1Store]: treesize reduction 104, result has 1.0 percent of original size [2023-11-29 05:10:28,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 54 [2023-11-29 05:10:28,520 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-29 05:10:28,521 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 1 case distinctions, treesize of input 558 treesize of output 535 [2023-11-29 05:10:28,624 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:28,630 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:28,630 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:28,663 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-11-29 05:10:28,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 54 [2023-11-29 05:10:28,798 INFO L349 Elim1Store]: treesize reduction 37, result has 50.0 percent of original size [2023-11-29 05:10:28,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 297 treesize of output 359 [2023-11-29 05:10:28,882 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 12 treesize of output 8 [2023-11-29 05:10:28,978 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 05:10:28,978 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 17 [2023-11-29 05:10:29,046 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-11-29 05:10:29,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 31 [2023-11-29 05:10:30,014 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:10:30,107 INFO L349 Elim1Store]: treesize reduction 192, result has 0.5 percent of original size [2023-11-29 05:10:30,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 210 treesize of output 257 [2023-11-29 05:11:39,022 WARN L293 SmtUtils]: Spent 1.14m on a formula simplification. DAG size of input: 439 DAG size of output: 280 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 05:11:39,022 INFO L349 Elim1Store]: treesize reduction 946, result has 42.6 percent of original size [2023-11-29 05:11:39,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 20 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 19 new quantified variables, introduced 60 case distinctions, treesize of input 5352 treesize of output 9621 [2023-11-29 05:16:12,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:12,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:12,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:12,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:12,304 INFO L349 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2023-11-29 05:16:12,305 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 165 treesize of output 8 [2023-11-29 05:16:12,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:12,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:12,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:12,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:12,424 INFO L349 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2023-11-29 05:16:12,424 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 165 treesize of output 8 [2023-11-29 05:16:12,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:12,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:12,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:12,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:12,722 INFO L349 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2023-11-29 05:16:12,722 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 165 treesize of output 8 [2023-11-29 05:16:13,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:13,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:13,156 INFO L349 Elim1Store]: treesize reduction 172, result has 0.6 percent of original size [2023-11-29 05:16:13,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 177 treesize of output 17 [2023-11-29 05:16:18,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:19,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:16:33,861 WARN L293 SmtUtils]: Spent 14.85s on a formula simplification. DAG size of input: 372 DAG size of output: 148 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 05:16:33,861 INFO L349 Elim1Store]: treesize reduction 2088, result has 21.4 percent of original size [2023-11-29 05:16:33,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 50 case distinctions, treesize of input 1014 treesize of output 1446 [2023-11-29 05:17:21,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:21,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:21,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:22,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:22,007 INFO L224 Elim1Store]: Index analysis took 116 ms [2023-11-29 05:17:22,183 INFO L349 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2023-11-29 05:17:22,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 142 treesize of output 81 [2023-11-29 05:17:22,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:22,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:22,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:22,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:22,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:22,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:22,643 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-29 05:17:22,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 81 [2023-11-29 05:17:23,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:23,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:23,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:23,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:23,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:23,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:23,377 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-29 05:17:23,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 81 [2023-11-29 05:17:23,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:23,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:23,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:23,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:23,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:23,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:23,822 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-29 05:17:23,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 81 [2023-11-29 05:17:24,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:24,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:24,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:24,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:24,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:24,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:24,747 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-29 05:17:24,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 81 [2023-11-29 05:17:25,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:25,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:25,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:25,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:17:25,398 INFO L224 Elim1Store]: Index analysis took 197 ms [2023-11-29 05:17:25,572 INFO L349 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2023-11-29 05:17:25,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 142 treesize of output 81 [2023-11-29 05:19:19,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:19,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:19,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:19,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:19,163 INFO L224 Elim1Store]: Index analysis took 130 ms [2023-11-29 05:19:19,302 INFO L349 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2023-11-29 05:19:19,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 142 treesize of output 81 [2023-11-29 05:19:19,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:19,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:19,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:19,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:19,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:19,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:19,967 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-29 05:19:19,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 81 [2023-11-29 05:19:20,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:20,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:20,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:20,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:20,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:20,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:20,448 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-29 05:19:20,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 81 [2023-11-29 05:19:21,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,175 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-29 05:19:21,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 81 [2023-11-29 05:19:21,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,572 INFO L349 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2023-11-29 05:19:21,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 142 treesize of output 81 [2023-11-29 05:19:21,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:19:21,965 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-29 05:19:21,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 81 [2023-11-29 05:21:05,848 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:21:05,849 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:21:05,850 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:21:05,851 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:21:05,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:05,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:05,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:05,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:05,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:05,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:05,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:21:05,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 57 [2023-11-29 05:21:06,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:06,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:06,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:06,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:06,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:06,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:06,302 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 0 case distinctions, treesize of input 57 treesize of output 12 [2023-11-29 05:21:06,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:06,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:06,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:06,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:06,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:06,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:06,441 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 0 case distinctions, treesize of input 53 treesize of output 8 [2023-11-29 05:21:07,329 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:21:07,329 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:21:07,330 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:21:07,331 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:21:07,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:07,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:07,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:07,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:07,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:07,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:07,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 45 [2023-11-29 05:21:07,767 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:21:07,768 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:21:07,769 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:21:07,769 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:21:07,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:07,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:07,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:07,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:07,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:07,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:21:07,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 49