./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/dll-middle-data.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/dll-middle-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 55fed19fd46c3c3877aeb4601619875fca08ed123cdc32456163a7ce3c0dda73 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:17:34,650 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:17:34,776 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2024-11-09 06:17:34,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:17:34,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:17:34,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:17:34,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:17:34,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:17:34,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:17:34,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:17:34,845 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:17:34,846 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:17:34,847 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:17:34,850 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:17:34,850 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:17:34,851 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:17:34,851 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:17:34,852 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:17:34,852 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:17:34,853 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:17:34,853 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:17:34,856 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:17:34,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:17:34,857 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:17:34,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:17:34,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:17:34,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:17:34,859 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 06:17:34,860 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 06:17:34,861 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 06:17:34,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:17:34,863 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:17:34,864 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:17:34,864 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:17:34,865 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:17:34,866 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:17:34,866 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:17:34,867 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:17:34,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:17:34,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:17:34,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:17:34,869 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:17:34,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:17:34,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:17:34,870 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:17:34,871 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:17:34,871 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55fed19fd46c3c3877aeb4601619875fca08ed123cdc32456163a7ce3c0dda73 [2024-11-09 06:17:35,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:17:35,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:17:35,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:17:35,294 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:17:35,295 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:17:35,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/memsafety-broom/dll-middle-data.i Unable to find full path for "g++" [2024-11-09 06:17:37,883 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:17:38,204 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:17:38,208 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/sv-benchmarks/c/memsafety-broom/dll-middle-data.i [2024-11-09 06:17:38,241 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/data/0254d35a7/2cda87304a544d999e95b6ddbda94208/FLAG68e283a0b [2024-11-09 06:17:38,267 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/data/0254d35a7/2cda87304a544d999e95b6ddbda94208 [2024-11-09 06:17:38,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:17:38,274 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:17:38,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:17:38,277 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:17:38,284 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:17:38,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:17:38" (1/1) ... [2024-11-09 06:17:38,290 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55318b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38, skipping insertion in model container [2024-11-09 06:17:38,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:17:38" (1/1) ... [2024-11-09 06:17:38,369 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:17:38,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:17:38,886 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:17:38,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:17:38,999 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:17:38,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38 WrapperNode [2024-11-09 06:17:38,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:17:39,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:17:39,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:17:39,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:17:39,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38" (1/1) ... [2024-11-09 06:17:39,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38" (1/1) ... [2024-11-09 06:17:39,061 INFO L138 Inliner]: procedures = 121, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 77 [2024-11-09 06:17:39,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:17:39,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:17:39,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:17:39,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:17:39,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38" (1/1) ... [2024-11-09 06:17:39,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38" (1/1) ... [2024-11-09 06:17:39,081 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38" (1/1) ... [2024-11-09 06:17:39,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38" (1/1) ... [2024-11-09 06:17:39,093 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38" (1/1) ... [2024-11-09 06:17:39,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38" (1/1) ... [2024-11-09 06:17:39,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38" (1/1) ... [2024-11-09 06:17:39,100 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38" (1/1) ... [2024-11-09 06:17:39,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:17:39,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:17:39,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:17:39,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:17:39,106 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38" (1/1) ... [2024-11-09 06:17:39,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:17:39,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:17:39,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:17:39,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:17:39,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:17:39,203 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-09 06:17:39,204 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-09 06:17:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:17:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 06:17:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:17:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:17:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:17:39,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:17:39,344 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:17:39,346 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:17:39,804 INFO L? ?]: Removed 100 outVars from TransFormulas that were not future-live. [2024-11-09 06:17:39,804 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:17:39,864 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:17:39,864 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 06:17:39,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:17:39 BoogieIcfgContainer [2024-11-09 06:17:39,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:17:39,867 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:17:39,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:17:39,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:17:39,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:17:38" (1/3) ... [2024-11-09 06:17:39,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2016392f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:17:39, skipping insertion in model container [2024-11-09 06:17:39,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:17:38" (2/3) ... [2024-11-09 06:17:39,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2016392f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:17:39, skipping insertion in model container [2024-11-09 06:17:39,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:17:39" (3/3) ... [2024-11-09 06:17:39,878 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-middle-data.i [2024-11-09 06:17:39,900 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:17:39,900 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-11-09 06:17:39,956 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:17:39,966 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5487103c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:17:39,970 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-09 06:17:39,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 32 states have (on average 2.3125) internal successors, (74), 68 states have internal predecessors, (74), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:17:39,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 06:17:39,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:17:39,985 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 06:17:39,986 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:17:39,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:17:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash 5061589, now seen corresponding path program 1 times [2024-11-09 06:17:40,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:17:40,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858900961] [2024-11-09 06:17:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:40,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:17:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:17:40,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:17:40,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858900961] [2024-11-09 06:17:40,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858900961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:17:40,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:17:40,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:17:40,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640954383] [2024-11-09 06:17:40,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:17:40,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:17:40,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:17:40,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:17:40,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:17:40,407 INFO L87 Difference]: Start difference. First operand has 72 states, 32 states have (on average 2.3125) internal successors, (74), 68 states have internal predecessors, (74), 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 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:17:40,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:17:40,593 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2024-11-09 06:17:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:17:40,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 4 [2024-11-09 06:17:40,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:17:40,605 INFO L225 Difference]: With dead ends: 68 [2024-11-09 06:17:40,606 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 06:17:40,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:17:40,612 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 3 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:17:40,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 83 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:17:40,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 06:17:40,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-09 06:17:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 32 states have (on average 2.125) internal successors, (68), 63 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:17:40,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2024-11-09 06:17:40,658 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 4 [2024-11-09 06:17:40,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:17:40,659 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2024-11-09 06:17:40,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:17:40,660 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2024-11-09 06:17:40,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 06:17:40,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:17:40,661 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 06:17:40,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:17:40,662 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:17:40,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:17:40,663 INFO L85 PathProgramCache]: Analyzing trace with hash 5061590, now seen corresponding path program 1 times [2024-11-09 06:17:40,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:17:40,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078948245] [2024-11-09 06:17:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:40,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:17:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:17:40,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:17:40,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078948245] [2024-11-09 06:17:40,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078948245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:17:40,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:17:40,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:17:40,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521541019] [2024-11-09 06:17:40,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:17:40,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:17:40,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:17:40,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:17:40,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:17:40,781 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:17:40,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:17:40,892 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2024-11-09 06:17:40,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:17:40,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 4 [2024-11-09 06:17:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:17:40,894 INFO L225 Difference]: With dead ends: 63 [2024-11-09 06:17:40,894 INFO L226 Difference]: Without dead ends: 63 [2024-11-09 06:17:40,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:17:40,896 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:17:40,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 86 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:17:40,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-09 06:17:40,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-09 06:17:40,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 32 states have (on average 2.0) 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) [2024-11-09 06:17:40,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2024-11-09 06:17:40,904 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 4 [2024-11-09 06:17:40,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:17:40,905 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2024-11-09 06:17:40,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:17:40,905 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2024-11-09 06:17:40,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 06:17:40,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:17:40,906 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:17:40,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:17:40,907 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:17:40,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:17:40,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1202772235, now seen corresponding path program 1 times [2024-11-09 06:17:40,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:17:40,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543175208] [2024-11-09 06:17:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:40,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:17:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:17:41,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:17:41,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543175208] [2024-11-09 06:17:41,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543175208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:17:41,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:17:41,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:17:41,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832916142] [2024-11-09 06:17:41,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:17:41,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:17:41,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:17:41,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:17:41,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:17:41,174 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand has 6 states, 4 states have (on average 2.0) 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) [2024-11-09 06:17:41,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:17:41,407 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2024-11-09 06:17:41,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:17:41,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.0) 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 [2024-11-09 06:17:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:17:41,412 INFO L225 Difference]: With dead ends: 61 [2024-11-09 06:17:41,414 INFO L226 Difference]: Without dead ends: 61 [2024-11-09 06:17:41,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:17:41,417 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 17 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:17:41,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 121 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:17:41,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-09 06:17:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2024-11-09 06:17:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 32 states have (on average 1.8125) internal successors, (58), 53 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:17:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2024-11-09 06:17:41,437 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 10 [2024-11-09 06:17:41,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:17:41,440 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2024-11-09 06:17:41,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.0) 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) [2024-11-09 06:17:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2024-11-09 06:17:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 06:17:41,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:17:41,442 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:17:41,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:17:41,442 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:17:41,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:17:41,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1202772234, now seen corresponding path program 1 times [2024-11-09 06:17:41,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:17:41,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710276893] [2024-11-09 06:17:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:41,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:17:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:17:41,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:17:41,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710276893] [2024-11-09 06:17:41,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710276893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:17:41,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:17:41,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:17:41,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2238803] [2024-11-09 06:17:41,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:17:41,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:17:41,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:17:41,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:17:41,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:17:41,916 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 6 states, 4 states have (on average 2.0) 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) [2024-11-09 06:17:42,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:17:42,130 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2024-11-09 06:17:42,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:17:42,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.0) 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 [2024-11-09 06:17:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:17:42,133 INFO L225 Difference]: With dead ends: 59 [2024-11-09 06:17:42,133 INFO L226 Difference]: Without dead ends: 59 [2024-11-09 06:17:42,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:17:42,135 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 5 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:17:42,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 144 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:17:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-09 06:17:42,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-11-09 06:17:42,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.75) internal successors, (56), 51 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:17:42,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2024-11-09 06:17:42,143 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 10 [2024-11-09 06:17:42,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:17:42,144 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2024-11-09 06:17:42,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.0) 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) [2024-11-09 06:17:42,145 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2024-11-09 06:17:42,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 06:17:42,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:17:42,146 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:17:42,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:17:42,147 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:17:42,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:17:42,147 INFO L85 PathProgramCache]: Analyzing trace with hash 410314020, now seen corresponding path program 1 times [2024-11-09 06:17:42,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:17:42,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505674586] [2024-11-09 06:17:42,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:42,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:17:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:17:42,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:17:42,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505674586] [2024-11-09 06:17:42,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505674586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:17:42,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:17:42,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:17:42,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415849696] [2024-11-09 06:17:42,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:17:42,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:17:42,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:17:42,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:17:42,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:17:42,450 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:17:42,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:17:42,702 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-11-09 06:17:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:17:42,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 17 [2024-11-09 06:17:42,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:17:42,705 INFO L225 Difference]: With dead ends: 62 [2024-11-09 06:17:42,705 INFO L226 Difference]: Without dead ends: 62 [2024-11-09 06:17:42,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:17:42,708 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:17:42,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 151 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:17:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-09 06:17:42,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2024-11-09 06:17:42,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 38 states have (on average 1.736842105263158) internal successors, (66), 57 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) [2024-11-09 06:17:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2024-11-09 06:17:42,725 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 17 [2024-11-09 06:17:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:17:42,726 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2024-11-09 06:17:42,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:17:42,726 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2024-11-09 06:17:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 06:17:42,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:17:42,730 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:17:42,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:17:42,731 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:17:42,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:17:42,731 INFO L85 PathProgramCache]: Analyzing trace with hash 410314021, now seen corresponding path program 1 times [2024-11-09 06:17:42,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:17:42,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830708236] [2024-11-09 06:17:42,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:42,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:17:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:17:43,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:17:43,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830708236] [2024-11-09 06:17:43,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830708236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:17:43,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:17:43,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:17:43,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524378092] [2024-11-09 06:17:43,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:17:43,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:17:43,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:17:43,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:17:43,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:17:43,256 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:17:43,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:17:43,530 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2024-11-09 06:17:43,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:17:43,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 17 [2024-11-09 06:17:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:17:43,534 INFO L225 Difference]: With dead ends: 62 [2024-11-09 06:17:43,534 INFO L226 Difference]: Without dead ends: 62 [2024-11-09 06:17:43,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:17:43,535 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:17:43,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 151 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:17:43,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-09 06:17:43,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2024-11-09 06:17:43,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 38 states have (on average 1.7105263157894737) internal successors, (65), 57 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:17:43,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2024-11-09 06:17:43,550 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 17 [2024-11-09 06:17:43,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:17:43,552 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2024-11-09 06:17:43,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:17:43,553 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2024-11-09 06:17:43,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 06:17:43,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:17:43,554 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:17:43,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:17:43,554 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:17:43,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:17:43,555 INFO L85 PathProgramCache]: Analyzing trace with hash -814242048, now seen corresponding path program 1 times [2024-11-09 06:17:43,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:17:43,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887435548] [2024-11-09 06:17:43,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:43,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:17:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:17:43,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:17:43,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887435548] [2024-11-09 06:17:43,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887435548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:17:43,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:17:43,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:17:43,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601007211] [2024-11-09 06:17:43,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:17:43,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:17:43,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:17:43,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:17:43,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:17:43,743 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:17:43,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:17:43,887 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2024-11-09 06:17:43,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:17:43,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 19 [2024-11-09 06:17:43,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:17:43,889 INFO L225 Difference]: With dead ends: 64 [2024-11-09 06:17:43,889 INFO L226 Difference]: Without dead ends: 64 [2024-11-09 06:17:43,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:17:43,890 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:17:43,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 216 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:17:43,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-09 06:17:43,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2024-11-09 06:17:43,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.625) internal successors, (65), 59 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:17:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2024-11-09 06:17:43,897 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 19 [2024-11-09 06:17:43,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:17:43,898 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2024-11-09 06:17:43,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:17:43,898 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2024-11-09 06:17:43,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 06:17:43,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:17:43,899 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:17:43,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:17:43,900 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:17:43,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:17:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash 189375639, now seen corresponding path program 1 times [2024-11-09 06:17:43,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:17:43,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222103103] [2024-11-09 06:17:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:43,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:17:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:17:45,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:17:45,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222103103] [2024-11-09 06:17:45,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222103103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:17:45,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307378398] [2024-11-09 06:17:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:45,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:17:45,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:17:45,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:17:45,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:17:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:45,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-09 06:17:45,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:17:45,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 06:17:45,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 06:17:45,802 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 29 treesize of output 13 [2024-11-09 06:17:45,818 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 29 treesize of output 13 [2024-11-09 06:17:45,846 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 25 treesize of output 13 [2024-11-09 06:17:45,858 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 25 treesize of output 13 [2024-11-09 06:17:45,890 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 29 treesize of output 13 [2024-11-09 06:17:45,905 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 29 treesize of output 13 [2024-11-09 06:17:46,082 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 25 treesize of output 13 [2024-11-09 06:17:46,103 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 25 treesize of output 13 [2024-11-09 06:17:46,136 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 29 treesize of output 13 [2024-11-09 06:17:46,146 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 29 treesize of output 13 [2024-11-09 06:17:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:17:46,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:17:46,481 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_create_~dll~0#1.offset| 4)) (.cse0 (+ 20 |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_261 (Array Int Int))) (or (not (= v_ArrVal_261 (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_261 .cse0)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse1) 0))) (forall ((v_ArrVal_260 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_260) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse1) 0) (not (= v_ArrVal_260 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_260 .cse0)))))))) is different from false [2024-11-09 06:17:46,672 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_create_~dll~0#1.offset| 4)) (.cse0 (+ 20 |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_260 (Array Int Int))) (or (not (= (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| (select v_ArrVal_260 |c_ULTIMATE.start_create_~now~0#1.offset|)) .cse0 (select v_ArrVal_260 .cse0)) v_ArrVal_260)) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_260) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse1) 0))) (forall ((v_ArrVal_261 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse1) 0) (not (= v_ArrVal_261 (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| (select v_ArrVal_261 |c_ULTIMATE.start_create_~now~0#1.offset|)) .cse0 (select v_ArrVal_261 .cse0)))))))) is different from false [2024-11-09 06:17:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:17:47,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307378398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:17:47,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1022585439] [2024-11-09 06:17:47,378 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2024-11-09 06:17:47,379 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:17:47,385 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:17:47,392 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:17:47,393 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:17:48,208 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-09 06:17:48,288 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:18:00,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1022585439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:00,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:18:00,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10, 9, 10] total 32 [2024-11-09 06:18:00,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713253791] [2024-11-09 06:18:00,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:00,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 06:18:00,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:00,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 06:18:00,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=768, Unknown=4, NotChecked=114, Total=992 [2024-11-09 06:18:00,623 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:02,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:18:07,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:07,866 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2024-11-09 06:18:07,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 06:18:07,867 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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 20 [2024-11-09 06:18:07,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:07,868 INFO L225 Difference]: With dead ends: 73 [2024-11-09 06:18:07,868 INFO L226 Difference]: Without dead ends: 73 [2024-11-09 06:18:07,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=106, Invalid=768, Unknown=4, NotChecked=114, Total=992 [2024-11-09 06:18:07,869 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:07,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 164 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 619 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2024-11-09 06:18:07,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-09 06:18:07,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2024-11-09 06:18:07,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 46 states have (on average 1.565217391304348) internal successors, (72), 65 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:18:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2024-11-09 06:18:07,877 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 20 [2024-11-09 06:18:07,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:07,878 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2024-11-09 06:18:07,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2024-11-09 06:18:07,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 06:18:07,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:07,879 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:07,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:18:08,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:08,084 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:18:08,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2043200432, now seen corresponding path program 1 times [2024-11-09 06:18:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:08,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760824525] [2024-11-09 06:18:08,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:08,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:08,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:08,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760824525] [2024-11-09 06:18:08,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760824525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:08,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659175114] [2024-11-09 06:18:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:08,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:08,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:08,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:08,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:18:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:08,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:18:08,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:08,669 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2024-11-09 06:18:08,765 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 06:18:08,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 06:18:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:08,771 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:08,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659175114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:08,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:18:08,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2024-11-09 06:18:08,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731875363] [2024-11-09 06:18:08,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:08,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:18:08,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:08,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:18:08,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2024-11-09 06:18:08,774 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:18:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:08,944 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2024-11-09 06:18:08,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:18:08,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-09 06:18:08,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:08,946 INFO L225 Difference]: With dead ends: 72 [2024-11-09 06:18:08,946 INFO L226 Difference]: Without dead ends: 72 [2024-11-09 06:18:08,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2024-11-09 06:18:08,947 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 14 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:08,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 73 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 81 Unchecked, 0.2s Time] [2024-11-09 06:18:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-09 06:18:08,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-09 06:18:08,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.574468085106383) internal successors, (74), 66 states have internal predecessors, (74), 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) [2024-11-09 06:18:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2024-11-09 06:18:08,960 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 21 [2024-11-09 06:18:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:08,960 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2024-11-09 06:18:08,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:18:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2024-11-09 06:18:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 06:18:08,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:08,961 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:08,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:18:09,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:09,162 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:18:09,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2043200433, now seen corresponding path program 1 times [2024-11-09 06:18:09,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:09,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809059141] [2024-11-09 06:18:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:09,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:09,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:09,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809059141] [2024-11-09 06:18:09,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809059141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:09,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390292550] [2024-11-09 06:18:09,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:09,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:09,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:09,802 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:09,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:18:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:09,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:18:09,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:10,151 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-09 06:18:10,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:18:10,212 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 16 treesize of output 11 [2024-11-09 06:18:10,230 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 06:18:10,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 06:18:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:10,267 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:10,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390292550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:10,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:18:10,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2024-11-09 06:18:10,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65608011] [2024-11-09 06:18:10,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:10,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:18:10,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:10,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:18:10,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=127, Unknown=1, NotChecked=22, Total=182 [2024-11-09 06:18:10,269 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:18:10,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:10,582 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2024-11-09 06:18:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:18:10,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-09 06:18:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:10,584 INFO L225 Difference]: With dead ends: 85 [2024-11-09 06:18:10,585 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 06:18:10,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=127, Unknown=1, NotChecked=22, Total=182 [2024-11-09 06:18:10,586 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 13 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:10,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 117 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 151 Invalid, 0 Unknown, 105 Unchecked, 0.3s Time] [2024-11-09 06:18:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 06:18:10,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2024-11-09 06:18:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 73 states have internal predecessors, (86), 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) [2024-11-09 06:18:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2024-11-09 06:18:10,601 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 21 [2024-11-09 06:18:10,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:10,602 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2024-11-09 06:18:10,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:18:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2024-11-09 06:18:10,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 06:18:10,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:10,607 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:10,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:18:10,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:10,808 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:18:10,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:10,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1612338611, now seen corresponding path program 1 times [2024-11-09 06:18:10,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:10,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165925088] [2024-11-09 06:18:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:10,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:18:11,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:11,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165925088] [2024-11-09 06:18:11,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165925088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:11,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:11,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:18:11,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153988782] [2024-11-09 06:18:11,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:11,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:18:11,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:11,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:18:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:18:11,035 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:11,508 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2024-11-09 06:18:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:18:11,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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 22 [2024-11-09 06:18:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:11,510 INFO L225 Difference]: With dead ends: 82 [2024-11-09 06:18:11,510 INFO L226 Difference]: Without dead ends: 82 [2024-11-09 06:18:11,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:18:11,511 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:11,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 142 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:18:11,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-09 06:18:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-09 06:18:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 58 states have (on average 1.5862068965517242) internal successors, (92), 76 states have internal predecessors, (92), 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) [2024-11-09 06:18:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2024-11-09 06:18:11,518 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 22 [2024-11-09 06:18:11,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:11,519 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2024-11-09 06:18:11,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:11,519 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2024-11-09 06:18:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 06:18:11,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:11,520 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:11,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 06:18:11,521 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:18:11,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:11,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1612338612, now seen corresponding path program 1 times [2024-11-09 06:18:11,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:11,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776351435] [2024-11-09 06:18:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:11,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:18:11,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:11,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776351435] [2024-11-09 06:18:11,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776351435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:11,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:11,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:18:11,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151862265] [2024-11-09 06:18:11,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:11,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:18:11,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:11,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:18:11,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:18:11,873 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:12,336 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2024-11-09 06:18:12,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:18:12,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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 22 [2024-11-09 06:18:12,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:12,337 INFO L225 Difference]: With dead ends: 83 [2024-11-09 06:18:12,338 INFO L226 Difference]: Without dead ends: 83 [2024-11-09 06:18:12,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:18:12,339 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:12,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 142 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:18:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-09 06:18:12,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-09 06:18:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 59 states have (on average 1.5593220338983051) internal successors, (92), 77 states have internal predecessors, (92), 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) [2024-11-09 06:18:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 98 transitions. [2024-11-09 06:18:12,344 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 98 transitions. Word has length 22 [2024-11-09 06:18:12,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:12,344 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 98 transitions. [2024-11-09 06:18:12,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 98 transitions. [2024-11-09 06:18:12,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 06:18:12,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:12,345 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:12,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 06:18:12,346 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:18:12,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:12,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1612355396, now seen corresponding path program 1 times [2024-11-09 06:18:12,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:12,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263978111] [2024-11-09 06:18:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:12,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:18:12,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:12,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263978111] [2024-11-09 06:18:12,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263978111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:12,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:12,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 06:18:12,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574271249] [2024-11-09 06:18:12,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:12,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:18:12,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:12,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:18:12,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:18:12,532 INFO L87 Difference]: Start difference. First operand 83 states and 98 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:12,841 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2024-11-09 06:18:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:18:12,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 22 [2024-11-09 06:18:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:12,842 INFO L225 Difference]: With dead ends: 90 [2024-11-09 06:18:12,842 INFO L226 Difference]: Without dead ends: 90 [2024-11-09 06:18:12,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:18:12,843 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 30 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:12,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 215 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:18:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-09 06:18:12,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2024-11-09 06:18:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 79 states have internal predecessors, (92), 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) [2024-11-09 06:18:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2024-11-09 06:18:12,849 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 22 [2024-11-09 06:18:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:12,850 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2024-11-09 06:18:12,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:12,850 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2024-11-09 06:18:12,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 06:18:12,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:12,851 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:12,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 06:18:12,852 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:18:12,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:12,853 INFO L85 PathProgramCache]: Analyzing trace with hash 715653523, now seen corresponding path program 1 times [2024-11-09 06:18:12,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:12,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854904232] [2024-11-09 06:18:12,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:12,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:18:13,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:13,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854904232] [2024-11-09 06:18:13,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854904232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:13,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:13,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:18:13,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998711624] [2024-11-09 06:18:13,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:13,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:18:13,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:13,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:18:13,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:18:13,120 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:18:13,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:13,465 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2024-11-09 06:18:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:18:13,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-09 06:18:13,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:13,466 INFO L225 Difference]: With dead ends: 84 [2024-11-09 06:18:13,467 INFO L226 Difference]: Without dead ends: 84 [2024-11-09 06:18:13,467 INFO L431 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 [2024-11-09 06:18:13,468 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:13,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 158 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:18:13,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-09 06:18:13,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-09 06:18:13,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 78 states have internal predecessors, (90), 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) [2024-11-09 06:18:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2024-11-09 06:18:13,474 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 23 [2024-11-09 06:18:13,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:13,474 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2024-11-09 06:18:13,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:18:13,475 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2024-11-09 06:18:13,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 06:18:13,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:13,476 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:13,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 06:18:13,476 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:18:13,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:13,477 INFO L85 PathProgramCache]: Analyzing trace with hash 715653524, now seen corresponding path program 1 times [2024-11-09 06:18:13,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:13,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816363759] [2024-11-09 06:18:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:13,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:13,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:18:13,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:13,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816363759] [2024-11-09 06:18:13,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816363759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:13,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:13,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:18:13,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139909222] [2024-11-09 06:18:13,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:13,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:18:13,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:13,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:18:13,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:18:13,906 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:18:14,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:14,334 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2024-11-09 06:18:14,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:18:14,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-09 06:18:14,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:14,337 INFO L225 Difference]: With dead ends: 83 [2024-11-09 06:18:14,337 INFO L226 Difference]: Without dead ends: 83 [2024-11-09 06:18:14,337 INFO L431 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 [2024-11-09 06:18:14,338 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:14,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 163 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:18:14,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-09 06:18:14,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-09 06:18:14,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 77 states have internal predecessors, (88), 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) [2024-11-09 06:18:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2024-11-09 06:18:14,343 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 23 [2024-11-09 06:18:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:14,343 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2024-11-09 06:18:14,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:18:14,344 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2024-11-09 06:18:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 06:18:14,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:14,345 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:14,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 06:18:14,345 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:18:14,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:14,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1025751593, now seen corresponding path program 1 times [2024-11-09 06:18:14,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:14,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576754590] [2024-11-09 06:18:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:14,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:14,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:18:14,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:14,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576754590] [2024-11-09 06:18:14,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576754590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:14,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:14,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:18:14,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309008722] [2024-11-09 06:18:14,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:14,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:18:14,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:14,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:18:14,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:18:14,602 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:15,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:15,016 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2024-11-09 06:18:15,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:18:15,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 24 [2024-11-09 06:18:15,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:15,018 INFO L225 Difference]: With dead ends: 87 [2024-11-09 06:18:15,019 INFO L226 Difference]: Without dead ends: 87 [2024-11-09 06:18:15,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:18:15,020 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 24 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:15,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 182 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:18:15,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-09 06:18:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-11-09 06:18:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.46875) internal successors, (94), 80 states have internal predecessors, (94), 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) [2024-11-09 06:18:15,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2024-11-09 06:18:15,028 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 24 [2024-11-09 06:18:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:15,029 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2024-11-09 06:18:15,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2024-11-09 06:18:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 06:18:15,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:15,031 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:15,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 06:18:15,033 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:18:15,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:15,034 INFO L85 PathProgramCache]: Analyzing trace with hash 548359034, now seen corresponding path program 1 times [2024-11-09 06:18:15,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:15,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987178801] [2024-11-09 06:18:15,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:15,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:15,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:15,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987178801] [2024-11-09 06:18:15,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987178801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:15,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:15,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 06:18:15,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360387173] [2024-11-09 06:18:15,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:15,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:18:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:18:15,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:18:15,741 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:18:16,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:16,695 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2024-11-09 06:18:16,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:18:16,696 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-09 06:18:16,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:16,697 INFO L225 Difference]: With dead ends: 87 [2024-11-09 06:18:16,698 INFO L226 Difference]: Without dead ends: 87 [2024-11-09 06:18:16,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:18:16,699 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:16,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 279 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:18:16,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-09 06:18:16,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-11-09 06:18:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.453125) internal successors, (93), 80 states have internal predecessors, (93), 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) [2024-11-09 06:18:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2024-11-09 06:18:16,704 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 25 [2024-11-09 06:18:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:16,704 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2024-11-09 06:18:16,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:18:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2024-11-09 06:18:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 06:18:16,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:16,706 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:16,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 06:18:16,706 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:18:16,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:16,707 INFO L85 PathProgramCache]: Analyzing trace with hash 548359035, now seen corresponding path program 1 times [2024-11-09 06:18:16,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:16,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249290136] [2024-11-09 06:18:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:16,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:17,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:17,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249290136] [2024-11-09 06:18:17,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249290136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:17,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147204576] [2024-11-09 06:18:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:17,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:17,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:17,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:17,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:18:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:17,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 06:18:17,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:17,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 06:18:18,173 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 06:18:18,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 06:18:18,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 06:18:18,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:18:18,505 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:18:18,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-09 06:18:18,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 06:18:18,542 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 [2024-11-09 06:18:18,550 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 [2024-11-09 06:18:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:18,619 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:18,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147204576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:18,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:18:18,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2024-11-09 06:18:18,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120051465] [2024-11-09 06:18:18,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:18,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:18:18,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:18,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:18:18,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:18:18,622 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:18:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:19,293 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2024-11-09 06:18:19,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:18:19,294 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-09 06:18:19,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:19,295 INFO L225 Difference]: With dead ends: 86 [2024-11-09 06:18:19,295 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 06:18:19,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2024-11-09 06:18:19,296 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:19,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 207 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:18:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 06:18:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-09 06:18:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.4375) internal successors, (92), 80 states have internal predecessors, (92), 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) [2024-11-09 06:18:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2024-11-09 06:18:19,301 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 25 [2024-11-09 06:18:19,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:19,301 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2024-11-09 06:18:19,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:18:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2024-11-09 06:18:19,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:18:19,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:19,303 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:19,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 06:18:19,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 06:18:19,508 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:18:19,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:19,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1307860608, now seen corresponding path program 1 times [2024-11-09 06:18:19,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:19,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310462055] [2024-11-09 06:18:19,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:19,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:20,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:20,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310462055] [2024-11-09 06:18:20,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310462055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:20,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:20,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-09 06:18:20,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289982345] [2024-11-09 06:18:20,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:20,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 06:18:20,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 06:18:20,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:18:20,379 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:18:21,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:21,277 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2024-11-09 06:18:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:18:21,278 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-09 06:18:21,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:21,279 INFO L225 Difference]: With dead ends: 87 [2024-11-09 06:18:21,279 INFO L226 Difference]: Without dead ends: 87 [2024-11-09 06:18:21,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-09 06:18:21,280 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:21,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 258 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:18:21,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-09 06:18:21,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-11-09 06:18:21,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.421875) internal successors, (91), 80 states have internal predecessors, (91), 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) [2024-11-09 06:18:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2024-11-09 06:18:21,286 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 27 [2024-11-09 06:18:21,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:21,290 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2024-11-09 06:18:21,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:18:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2024-11-09 06:18:21,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:18:21,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:21,291 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:21,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 06:18:21,292 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:18:21,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:21,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1307860607, now seen corresponding path program 1 times [2024-11-09 06:18:21,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:21,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509243131] [2024-11-09 06:18:21,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:21,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:22,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:22,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509243131] [2024-11-09 06:18:22,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509243131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:22,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484546546] [2024-11-09 06:18:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:22,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:22,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:22,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:22,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:18:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:22,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 06:18:22,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:22,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 06:18:22,815 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 06:18:22,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 06:18:22,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 06:18:22,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:18:23,104 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:18:23,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-09 06:18:23,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 06:18:23,271 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:18:23,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-09 06:18:23,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 06:18:23,306 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 [2024-11-09 06:18:23,314 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 [2024-11-09 06:18:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:23,367 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:23,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484546546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:23,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:18:23,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 21 [2024-11-09 06:18:23,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430122237] [2024-11-09 06:18:23,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:23,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:18:23,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:18:23,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2024-11-09 06:18:23,369 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:18:24,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:24,162 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2024-11-09 06:18:24,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:18:24,163 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-09 06:18:24,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:24,165 INFO L225 Difference]: With dead ends: 86 [2024-11-09 06:18:24,165 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 06:18:24,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2024-11-09 06:18:24,167 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:24,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 229 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:18:24,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 06:18:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-09 06:18:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.40625) internal successors, (90), 80 states have internal predecessors, (90), 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) [2024-11-09 06:18:24,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2024-11-09 06:18:24,175 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 27 [2024-11-09 06:18:24,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:24,179 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2024-11-09 06:18:24,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:18:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2024-11-09 06:18:24,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 06:18:24,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:24,180 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:24,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 06:18:24,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:24,381 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:18:24,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:24,381 INFO L85 PathProgramCache]: Analyzing trace with hash -850789301, now seen corresponding path program 1 times [2024-11-09 06:18:24,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:24,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224637472] [2024-11-09 06:18:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:24,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:25,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:25,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224637472] [2024-11-09 06:18:25,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224637472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:25,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809393181] [2024-11-09 06:18:25,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:25,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:25,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:25,035 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:25,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:18:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:25,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-09 06:18:25,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:25,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:18:25,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:18:25,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 06:18:25,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 06:18:25,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 06:18:25,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 06:18:25,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 06:18:25,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 06:18:25,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 06:18:25,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 06:18:25,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 06:18:25,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 06:18:25,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:18:25,878 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 17 treesize of output 15 [2024-11-09 06:18:25,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:18:25,898 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 17 treesize of output 15 [2024-11-09 06:18:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:18:25,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:18:26,228 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 20 |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_1406 (Array Int Int))) (or (not (= v_ArrVal_1406 (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_1406 .cse0)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_1406) |c_ULTIMATE.start_create_~dll~0#1.base|) 4) 0))) (forall ((v_ArrVal_1407 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_1407) |c_ULTIMATE.start_create_~dll~0#1.base|) 4) 0) (not (= (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_1407 .cse0)) v_ArrVal_1407)))))) is different from false [2024-11-09 06:18:26,298 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 20 |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_1406 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_1406) |c_ULTIMATE.start_create_~dll~0#1.base|) 4) 0) (not (= (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| (select v_ArrVal_1406 |c_ULTIMATE.start_create_~now~0#1.offset|)) .cse0 (select v_ArrVal_1406 .cse0)) v_ArrVal_1406)))) (forall ((v_ArrVal_1407 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_1407) |c_ULTIMATE.start_create_~dll~0#1.base|) 4) 0) (not (= v_ArrVal_1407 (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| (select v_ArrVal_1407 |c_ULTIMATE.start_create_~now~0#1.offset|)) .cse0 (select v_ArrVal_1407 .cse0)))))))) is different from false [2024-11-09 06:18:27,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-09 06:18:27,369 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 1842 treesize of output 1826 [2024-11-09 06:18:27,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:18:27,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809393181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:18:27,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [695959532] [2024-11-09 06:18:27,404 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-09 06:18:27,404 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:18:27,404 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:18:27,404 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:18:27,405 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:18:28,399 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-09 06:18:28,449 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:18:53,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [695959532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:53,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:18:53,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [13, 13, 15] total 46 [2024-11-09 06:18:53,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827327182] [2024-11-09 06:18:53,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:53,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 06:18:53,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:53,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 06:18:53,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1736, Unknown=4, NotChecked=170, Total=2070 [2024-11-09 06:18:53,238 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 21 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:55,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:19:03,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:03,417 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2024-11-09 06:19:03,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 06:19:03,418 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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 28 [2024-11-09 06:19:03,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:03,419 INFO L225 Difference]: With dead ends: 93 [2024-11-09 06:19:03,419 INFO L226 Difference]: Without dead ends: 93 [2024-11-09 06:19:03,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=160, Invalid=1736, Unknown=4, NotChecked=170, Total=2070 [2024-11-09 06:19:03,420 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:03,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 104 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 759 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2024-11-09 06:19:03,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-09 06:19:03,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2024-11-09 06:19:03,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.4029850746268657) internal successors, (94), 83 states have internal predecessors, (94), 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) [2024-11-09 06:19:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2024-11-09 06:19:03,426 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 28 [2024-11-09 06:19:03,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:03,426 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2024-11-09 06:19:03,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:19:03,427 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2024-11-09 06:19:03,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 06:19:03,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:03,428 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:03,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:03,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:03,633 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:19:03,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:03,633 INFO L85 PathProgramCache]: Analyzing trace with hash -850772516, now seen corresponding path program 1 times [2024-11-09 06:19:03,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:03,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649261994] [2024-11-09 06:19:03,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:03,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:04,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:19:04,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649261994] [2024-11-09 06:19:04,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649261994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:19:04,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827432835] [2024-11-09 06:19:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:04,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:04,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:19:04,015 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:19:04,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:19:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:04,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:19:04,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:04,347 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 13 treesize of output 9 [2024-11-09 06:19:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:04,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:19:04,586 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_#t~ret4#1.base_24| Int)) (or (= (store |c_#valid| |v_ULTIMATE.start_create_#t~ret4#1.base_24| 0) |c_ULTIMATE.start_main_old_#valid#1|) (not (= (select |c_#valid| |v_ULTIMATE.start_create_#t~ret4#1.base_24|) 0)))) is different from false [2024-11-09 06:19:04,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827432835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:19:04,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [520673760] [2024-11-09 06:19:04,593 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-09 06:19:04,594 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:19:04,594 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:19:04,594 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:19:04,595 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:19:05,517 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-09 06:19:05,547 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:19:54,138 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4272#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_destroy_~l#1.base_27| Int) (|v_#memory_int_108| (Array Int (Array Int Int))) (|v_#memory_int_109| (Array Int (Array Int Int))) (|v_#valid_103| (Array Int Int)) (|v_#length_83| (Array Int Int)) (|v_#memory_$Pointer$.base_152| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_150| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_149| (Array Int (Array Int Int))) (|v_#memory_int_110| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_151| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_152| (Array Int (Array Int Int))) (|v_#memory_int_113| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_154| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_147| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_153| (Array Int (Array Int Int)))) (and (= |#memory_int| (store |v_#memory_int_113| |v_ULTIMATE.start_destroy_~l#1.base_27| (store (select |v_#memory_int_113| |v_ULTIMATE.start_destroy_~l#1.base_27|) 20 (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_27|) 20)))) (= (store |v_#memory_int_109| |v_ULTIMATE.start_destroy_~l#1.base_27| (store (select |v_#memory_int_109| |v_ULTIMATE.start_destroy_~l#1.base_27|) 12 (select (select |v_#memory_int_110| |v_ULTIMATE.start_destroy_~l#1.base_27|) 12))) |v_#memory_int_110|) (<= 0 (+ (select (select |v_#memory_int_113| |v_ULTIMATE.start_destroy_~l#1.base_27|) 0) 2147483648)) (= (store |v_#memory_int_110| |v_ULTIMATE.start_destroy_~l#1.base_27| (store (store (select |v_#memory_int_110| |v_ULTIMATE.start_destroy_~l#1.base_27|) 20 0) 0 (select (select |v_#memory_int_113| |v_ULTIMATE.start_destroy_~l#1.base_27|) 0))) |v_#memory_int_113|) (= (store |v_#valid_103| |v_ULTIMATE.start_destroy_~l#1.base_27| 0) |#valid|) (= (store |v_#memory_$Pointer$.base_152| |v_ULTIMATE.start_destroy_~l#1.base_27| (store (select |v_#memory_$Pointer$.base_152| |v_ULTIMATE.start_destroy_~l#1.base_27|) 20 (select (select |v_#memory_$Pointer$.base_153| |v_ULTIMATE.start_destroy_~l#1.base_27|) 20))) |v_#memory_$Pointer$.base_153|) (= |v_#memory_$Pointer$.offset_150| (store |v_#memory_$Pointer$.offset_147| |v_ULTIMATE.start_destroy_~l#1.base_27| (store (store (store (select |v_#memory_$Pointer$.offset_147| |v_ULTIMATE.start_destroy_~l#1.base_27|) 4 0) 12 0) 0 (select (select |v_#memory_$Pointer$.offset_150| |v_ULTIMATE.start_destroy_~l#1.base_27|) 0)))) (= |v_#memory_$Pointer$.base_152| (store |v_#memory_$Pointer$.base_149| |v_ULTIMATE.start_destroy_~l#1.base_27| (store (store (store (select |v_#memory_$Pointer$.base_149| |v_ULTIMATE.start_destroy_~l#1.base_27|) 4 0) 12 0) 0 (select (select |v_#memory_$Pointer$.base_152| |v_ULTIMATE.start_destroy_~l#1.base_27|) 0)))) (<= (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_27|) 20) 2147483647) (<= 0 (+ (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_27|) 20) 2147483648)) (= |#length| (store |v_#length_83| |v_ULTIMATE.start_destroy_~l#1.base_27| 24)) (not (= |v_ULTIMATE.start_destroy_~l#1.base_27| 0)) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_154| |v_ULTIMATE.start_destroy_~l#1.base_27| (store (select |v_#memory_$Pointer$.base_154| |v_ULTIMATE.start_destroy_~l#1.base_27|) 20 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_27|) 20)))) (<= (select (select |v_#memory_int_113| |v_ULTIMATE.start_destroy_~l#1.base_27|) 0) 2147483647) (= (store |v_#memory_$Pointer$.offset_150| |v_ULTIMATE.start_destroy_~l#1.base_27| (store (select |v_#memory_$Pointer$.offset_150| |v_ULTIMATE.start_destroy_~l#1.base_27|) 20 (select (select |v_#memory_$Pointer$.offset_151| |v_ULTIMATE.start_destroy_~l#1.base_27|) 20))) |v_#memory_$Pointer$.offset_151|) (= |v_#memory_$Pointer$.base_154| (store |v_#memory_$Pointer$.base_153| |v_ULTIMATE.start_destroy_~l#1.base_27| (store (select |v_#memory_$Pointer$.base_153| |v_ULTIMATE.start_destroy_~l#1.base_27|) 0 (select (select |v_#memory_$Pointer$.base_154| |v_ULTIMATE.start_destroy_~l#1.base_27|) 0)))) (= |v_#memory_int_109| (store |v_#memory_int_108| |v_ULTIMATE.start_destroy_~l#1.base_27| (store (select |v_#memory_int_108| |v_ULTIMATE.start_destroy_~l#1.base_27|) 4 (select (select |v_#memory_int_109| |v_ULTIMATE.start_destroy_~l#1.base_27|) 4)))) (= (select |v_#valid_103| |v_ULTIMATE.start_destroy_~l#1.base_27|) 0) (= (store |v_#memory_$Pointer$.offset_151| |v_ULTIMATE.start_destroy_~l#1.base_27| (store (select |v_#memory_$Pointer$.offset_151| |v_ULTIMATE.start_destroy_~l#1.base_27|) 0 (select (select |v_#memory_$Pointer$.offset_152| |v_ULTIMATE.start_destroy_~l#1.base_27|) 0))) |v_#memory_$Pointer$.offset_152|) (<= (+ |v_ULTIMATE.start_destroy_~l#1.base_27| 1) |#StackHeapBarrier|) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_152| |v_ULTIMATE.start_destroy_~l#1.base_27| (store (select |v_#memory_$Pointer$.offset_152| |v_ULTIMATE.start_destroy_~l#1.base_27|) 20 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_destroy_~l#1.base_27|) 20)))))) (exists ((|v_ULTIMATE.start_main_old_#valid#1_10| (Array Int Int))) (and (= (select |v_ULTIMATE.start_main_old_#valid#1_10| 0) 0) (not (= |v_ULTIMATE.start_main_old_#valid#1_10| |#valid|)))) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2024-11-09 06:19:54,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:19:54,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:19:54,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 9 [2024-11-09 06:19:54,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757342695] [2024-11-09 06:19:54,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 06:19:54,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:19:54,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:19:54,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:19:54,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=962, Unknown=14, NotChecked=62, Total=1122 [2024-11-09 06:19:54,140 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 11 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:19:54,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:54,684 INFO L93 Difference]: Finished difference Result 102 states and 113 transitions. [2024-11-09 06:19:54,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:19:54,685 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 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 28 [2024-11-09 06:19:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:54,686 INFO L225 Difference]: With dead ends: 102 [2024-11-09 06:19:54,686 INFO L226 Difference]: Without dead ends: 100 [2024-11-09 06:19:54,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 48.8s TimeCoverageRelationStatistics Valid=84, Invalid=962, Unknown=14, NotChecked=62, Total=1122 [2024-11-09 06:19:54,687 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:54,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 242 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:19:54,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-09 06:19:54,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 95. [2024-11-09 06:19:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 73 states have (on average 1.36986301369863) internal successors, (100), 89 states have internal predecessors, (100), 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) [2024-11-09 06:19:54,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2024-11-09 06:19:54,697 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 28 [2024-11-09 06:19:54,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:54,697 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2024-11-09 06:19:54,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:19:54,698 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2024-11-09 06:19:54,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 06:19:54,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:54,699 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:54,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:54,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:54,901 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:19:54,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:54,902 INFO L85 PathProgramCache]: Analyzing trace with hash 219869427, now seen corresponding path program 1 times [2024-11-09 06:19:54,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:54,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037305335] [2024-11-09 06:19:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:54,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:19:55,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:19:55,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037305335] [2024-11-09 06:19:55,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037305335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:19:55,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292659021] [2024-11-09 06:19:55,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:55,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:55,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:19:55,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:19:55,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 06:19:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:55,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 06:19:55,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:19:55,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:19:55,571 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 06:19:55,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2024-11-09 06:19:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:19:55,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292659021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:19:55,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1084567284] [2024-11-09 06:19:55,622 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-09 06:19:55,622 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:19:55,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:19:55,623 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:19:55,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:20:08,798 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 06:20:08,865 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:21:38,705 WARN L286 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 264 DAG size of output: 252 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:22:00,823 WARN L286 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 269 DAG size of output: 255 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:22:00,825 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4695#(and (not (= (select |#valid| |ULTIMATE.start_loop_~l#1.base|) 1)) (= |ULTIMATE.start_main_~l~0#1.offset| |ULTIMATE.start_loop_~l#1.offset|) (= |ULTIMATE.start_loop_~l#1.base| |ULTIMATE.start_main_~l~0#1.base|) (or (not (= |ULTIMATE.start_loop_~l#1.base| 0)) (not (= |ULTIMATE.start_loop_~node~0#1.offset| 0))) (= |ULTIMATE.start_loop_~node~0#1.offset| |ULTIMATE.start_loop_~l#1.offset|) (exists ((|v_ULTIMATE.start_create_~now~0#1.offset_53| Int) (|v_ULTIMATE.start_create_~now~0#1.base_60| Int) (|v_#memory_$Pointer$.base_195| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_193| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_190| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_191| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_192| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_193| (Array Int (Array Int Int))) (|v_#memory_int_154| (Array Int (Array Int Int))) (|v_#memory_int_155| (Array Int (Array Int Int))) (|v_#memory_int_156| (Array Int (Array Int Int))) (|v_#memory_int_153| (Array Int (Array Int Int)))) (and (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_60|) 1) (= |#memory_int| (store |v_#memory_int_156| (select (select |v_#memory_$Pointer$.base_195| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_int_156| (select (select |v_#memory_$Pointer$.base_195| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 20 (select (select |v_#memory_$Pointer$.offset_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select (select |#memory_int| (select (select |v_#memory_$Pointer$.base_195| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 20 (select (select |v_#memory_$Pointer$.offset_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))))))) (<= 0 (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (= (store (store |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.base_60|)) (select (select (store |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.base_60|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select (store |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.base_60|)) (select (select (store |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.base_60|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select (select (store |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.offset_53|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (select (select |v_#memory_$Pointer$.base_195| (select (select (store |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.base_60|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select (select (store |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.offset_53|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))))) |v_#memory_$Pointer$.base_195|) (<= 0 (+ (select (select |#memory_int| (select (select |v_#memory_$Pointer$.base_195| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 20 (select (select |v_#memory_$Pointer$.offset_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)))) 2147483648)) (<= 0 (select (select (store |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.offset_53|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (<= (+ 12 |v_ULTIMATE.start_create_~now~0#1.offset_53|) (select |#length| |v_ULTIMATE.start_create_~now~0#1.base_60|)) (= (store |v_#memory_$Pointer$.base_195| (select (select |v_#memory_$Pointer$.base_195| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_195| (select (select |v_#memory_$Pointer$.base_195| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 20 (select (select |v_#memory_$Pointer$.offset_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select (select |#memory_$Pointer$.base| (select (select |v_#memory_$Pointer$.base_195| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 20 (select (select |v_#memory_$Pointer$.offset_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)))))) |#memory_$Pointer$.base|) (<= (+ 24 (select (select |v_#memory_$Pointer$.offset_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select |#length| (select (select |v_#memory_$Pointer$.base_195| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)))) (<= (+ 20 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select |#length| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)))) (= (store |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_60| (store (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|) (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)))) |v_#memory_$Pointer$.offset_191|) (<= (select (select |#memory_int| (select (select |v_#memory_$Pointer$.base_195| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 20 (select (select |v_#memory_$Pointer$.offset_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)))) 2147483647) (= (store (store |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (select (select (store |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.base_60|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select (store |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (select (select (store |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.base_60|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select (select (store |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.offset_53|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (select (select |v_#memory_$Pointer$.offset_193| (select (select (store |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.base_60|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select (select (store |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.offset_53|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))))) |v_#memory_$Pointer$.offset_193|) (<= 0 (+ (select (select |v_#memory_int_156| (select (select (store |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.base_60|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select (select (store |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.offset_53|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) 2147483648)) (= |v_#memory_int_154| (store |v_#memory_int_153| |v_ULTIMATE.start_create_~now~0#1.base_60| (store (select |v_#memory_int_153| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|) (select (select |v_#memory_int_154| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))))) (<= 0 (+ 20 (select (select |v_#memory_$Pointer$.offset_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_193| (select (select |v_#memory_$Pointer$.base_195| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.offset_193| (select (select |v_#memory_$Pointer$.base_195| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 20 (select (select |v_#memory_$Pointer$.offset_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select (select |#memory_$Pointer$.offset| (select (select |v_#memory_$Pointer$.base_195| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 20 (select (select |v_#memory_$Pointer$.offset_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))))))) (= (store |v_#memory_int_155| (select (select (store |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.base_60|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_int_155| (select (select (store |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.base_60|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select (select (store |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.offset_53|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (select (select |v_#memory_int_156| (select (select (store |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.base_60|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select (select (store |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.offset_53|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))))) |v_#memory_int_156|) (= (select |#valid| (select (select |v_#memory_$Pointer$.base_195| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) 1) (= (store |v_#memory_$Pointer$.base_192| |v_ULTIMATE.start_create_~now~0#1.base_60| (store (select |v_#memory_$Pointer$.base_192| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|) (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)))) |v_#memory_$Pointer$.base_193|) (<= (select (select |v_#memory_int_156| (select (select (store |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.base_193| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.base_60|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select (select (store |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_$Pointer$.offset_191| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) |v_ULTIMATE.start_create_~now~0#1.offset_53|)) |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) 2147483647) (= (store |v_#memory_int_154| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)) (store (select |v_#memory_int_154| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (select (select |v_#memory_int_155| (select (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|))) (+ 12 (select (select |v_#memory_$Pointer$.offset_191| |v_ULTIMATE.start_create_~now~0#1.base_60|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_53|)))))) |v_#memory_int_155|))))' at error location [2024-11-09 06:22:00,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:22:00,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:22:00,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2024-11-09 06:22:00,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396104825] [2024-11-09 06:22:00,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:22:00,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:22:00,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:22:00,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:22:00,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=711, Unknown=25, NotChecked=0, Total=812 [2024-11-09 06:22:00,830 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:22:01,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:01,113 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2024-11-09 06:22:01,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:22:01,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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 34 [2024-11-09 06:22:01,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:01,115 INFO L225 Difference]: With dead ends: 104 [2024-11-09 06:22:01,115 INFO L226 Difference]: Without dead ends: 104 [2024-11-09 06:22:01,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 112.0s TimeCoverageRelationStatistics Valid=76, Invalid=711, Unknown=25, NotChecked=0, Total=812 [2024-11-09 06:22:01,116 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:01,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 119 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:22:01,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-09 06:22:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2024-11-09 06:22:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 95 states have internal predecessors, (108), 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) [2024-11-09 06:22:01,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2024-11-09 06:22:01,122 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 34 [2024-11-09 06:22:01,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:01,122 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2024-11-09 06:22:01,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:22:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2024-11-09 06:22:01,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 06:22:01,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:01,124 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:01,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 06:22:01,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 06:22:01,325 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:22:01,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:01,325 INFO L85 PathProgramCache]: Analyzing trace with hash 219869428, now seen corresponding path program 1 times [2024-11-09 06:22:01,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:22:01,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413509805] [2024-11-09 06:22:01,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:01,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:22:01,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:22:01,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413509805] [2024-11-09 06:22:01,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413509805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:22:01,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237509549] [2024-11-09 06:22:01,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:01,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:01,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:22:01,866 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:22:01,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 06:22:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:02,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 06:22:02,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:22:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:22:02,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:22:02,878 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:22:02,878 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 21 treesize of output 25 [2024-11-09 06:22:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:22:03,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237509549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:22:03,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1964146617] [2024-11-09 06:22:03,174 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-09 06:22:03,174 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:22:03,175 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:22:03,175 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:22:03,175 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:22:16,081 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 06:22:16,154 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:23:53,202 WARN L286 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 264 DAG size of output: 252 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:24:15,025 WARN L286 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 269 DAG size of output: 255 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:24:15,027 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5138#(and (= |ULTIMATE.start_main_~l~0#1.offset| |ULTIMATE.start_loop_~l#1.offset|) (= |ULTIMATE.start_loop_~l#1.base| |ULTIMATE.start_main_~l~0#1.base|) (or (not (= |ULTIMATE.start_loop_~l#1.base| 0)) (not (= |ULTIMATE.start_loop_~l#1.offset| 0))) (exists ((|v_ULTIMATE.start_create_~now~0#1.base_66| Int) (|v_ULTIMATE.start_create_~now~0#1.offset_59| Int) (|v_#memory_int_198| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_236| (Array Int (Array Int Int))) (|v_#memory_int_199| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_234| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_231| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_232| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_233| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_234| (Array Int (Array Int Int))) (|v_#memory_int_196| (Array Int (Array Int Int))) (|v_#memory_int_197| (Array Int (Array Int Int)))) (and (<= 0 (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (<= 0 (+ (select (select |v_#memory_$Pointer$.offset_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 20)) (<= 0 (select (select (store |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.offset_59|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_234| (select (select |v_#memory_$Pointer$.base_236| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.offset_234| (select (select |v_#memory_$Pointer$.base_236| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 20) (select (select |#memory_$Pointer$.offset| (select (select |v_#memory_$Pointer$.base_236| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 20))))) (<= (+ (select (select |v_#memory_$Pointer$.offset_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 24) (select |#length| (select (select |v_#memory_$Pointer$.base_236| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)))) (= (store |v_#memory_$Pointer$.base_233| |v_ULTIMATE.start_create_~now~0#1.base_66| (store (select |v_#memory_$Pointer$.base_233| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|) (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)))) |v_#memory_$Pointer$.base_234|) (<= (select (select |v_#memory_int_199| (select (select (store |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.base_66|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (select (select (store |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.offset_59|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) 2147483647) (<= (select (select |#memory_int| (select (select |v_#memory_$Pointer$.base_236| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 20)) 2147483647) (<= (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 20) (select |#length| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)))) (= (store |v_#memory_$Pointer$.offset_231| |v_ULTIMATE.start_create_~now~0#1.base_66| (store (select |v_#memory_$Pointer$.offset_231| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|) (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)))) |v_#memory_$Pointer$.offset_232|) (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_66|) 1) (= (store (store |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.base_66|)) (select (select (store |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.base_66|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select (store |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.base_66|)) (select (select (store |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.base_66|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (select (select (store |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.offset_59|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (select (select |v_#memory_$Pointer$.base_236| (select (select (store |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.base_66|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (select (select (store |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.offset_59|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))))) |v_#memory_$Pointer$.base_236|) (<= 0 (+ (select (select |v_#memory_int_199| (select (select (store |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.base_66|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (select (select (store |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.offset_59|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) 2147483648)) (= (store |v_#memory_$Pointer$.base_236| (select (select |v_#memory_$Pointer$.base_236| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_236| (select (select |v_#memory_$Pointer$.base_236| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 20) (select (select |#memory_$Pointer$.base| (select (select |v_#memory_$Pointer$.base_236| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 20)))) |#memory_$Pointer$.base|) (= (select |#valid| (select (select |v_#memory_$Pointer$.base_236| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) 1) (= |v_#memory_$Pointer$.offset_234| (store (store |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (select (select (store |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.base_66|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select (store |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (select (select (store |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.base_66|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (select (select (store |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.offset_59|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (select (select |v_#memory_$Pointer$.offset_234| (select (select (store |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.base_66|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (select (select (store |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.offset_59|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)))))) (<= 0 (+ (select (select |#memory_int| (select (select |v_#memory_$Pointer$.base_236| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 20)) 2147483648)) (= (store |v_#memory_int_196| |v_ULTIMATE.start_create_~now~0#1.base_66| (store (select |v_#memory_int_196| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|) (select (select |v_#memory_int_197| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)))) |v_#memory_int_197|) (<= (+ 12 |v_ULTIMATE.start_create_~now~0#1.offset_59|) (select |#length| |v_ULTIMATE.start_create_~now~0#1.base_66|)) (= |#memory_int| (store |v_#memory_int_199| (select (select |v_#memory_$Pointer$.base_236| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_int_199| (select (select |v_#memory_$Pointer$.base_236| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 20) (select (select |#memory_int| (select (select |v_#memory_$Pointer$.base_236| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 20))))) (= (store |v_#memory_int_197| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_int_197| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) (select (select |v_#memory_int_198| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12)))) |v_#memory_int_198|) (= |v_#memory_int_199| (store |v_#memory_int_198| (select (select (store |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.base_66|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_int_198| (select (select (store |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.base_66|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (select (select (store |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.offset_59|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (select (select |v_#memory_int_199| (select (select (store |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.base_234| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.base_66|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (select (select (store |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) (store (select |v_#memory_$Pointer$.offset_232| (select (select |v_#memory_$Pointer$.base_234| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|))) (+ (select (select |v_#memory_$Pointer$.offset_232| |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)) 12) |v_ULTIMATE.start_create_~now~0#1.offset_59|)) |v_ULTIMATE.start_create_~now~0#1.base_66|) (+ 4 |v_ULTIMATE.start_create_~now~0#1.offset_59|)))))))) (or (< (+ |ULTIMATE.start_loop_~l#1.offset| 4) 0) (< (select |#length| |ULTIMATE.start_loop_~l#1.base|) (+ 12 |ULTIMATE.start_loop_~l#1.offset|))))' at error location [2024-11-09 06:24:15,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:24:15,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:24:15,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 16 [2024-11-09 06:24:15,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785124917] [2024-11-09 06:24:15,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:24:15,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 06:24:15,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:24:15,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 06:24:15,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1399, Unknown=25, NotChecked=0, Total=1560 [2024-11-09 06:24:15,029 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 16 states have internal predecessors, (68), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 06:24:15,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:24:15,834 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2024-11-09 06:24:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:24:15,835 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 16 states have internal predecessors, (68), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 34 [2024-11-09 06:24:15,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:24:15,836 INFO L225 Difference]: With dead ends: 104 [2024-11-09 06:24:15,836 INFO L226 Difference]: Without dead ends: 104 [2024-11-09 06:24:15,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 119.5s TimeCoverageRelationStatistics Valid=136, Invalid=1399, Unknown=25, NotChecked=0, Total=1560 [2024-11-09 06:24:15,838 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:24:15,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 314 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:24:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-09 06:24:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2024-11-09 06:24:15,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 79 states have (on average 1.3544303797468353) internal successors, (107), 95 states have internal predecessors, (107), 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) [2024-11-09 06:24:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2024-11-09 06:24:15,843 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 34 [2024-11-09 06:24:15,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:24:15,843 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2024-11-09 06:24:15,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.533333333333333) internal successors, (68), 16 states have internal predecessors, (68), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 06:24:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2024-11-09 06:24:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 06:24:15,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:24:15,844 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:24:15,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 06:24:16,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:24:16,045 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:24:16,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:24:16,045 INFO L85 PathProgramCache]: Analyzing trace with hash 240685684, now seen corresponding path program 2 times [2024-11-09 06:24:16,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:24:16,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763009261] [2024-11-09 06:24:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:24:16,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:24:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:24:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:24:16,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:24:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763009261] [2024-11-09 06:24:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763009261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:24:16,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636502817] [2024-11-09 06:24:16,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:24:16,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:24:16,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:24:16,910 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:24:16,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 06:24:17,328 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 06:24:17,329 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:24:17,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 06:24:17,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:24:17,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:24:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:24:17,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:24:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:24:18,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636502817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:24:18,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2080293237] [2024-11-09 06:24:18,060 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-09 06:24:18,060 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:24:18,060 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:24:18,061 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:24:18,061 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:24:18,731 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-09 06:24:18,766 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:25:04,848 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5582#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_old_#valid#1_11| (Array Int Int))) (and (= (select |v_ULTIMATE.start_main_old_#valid#1_11| 0) 0) (not (= |v_ULTIMATE.start_main_old_#valid#1_11| |#valid|)))) (exists ((|v_#memory_$Pointer$.offset_248| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_249| (Array Int (Array Int Int))) (|v_ULTIMATE.start_destroy_~l#1.base_34| Int) (|v_#memory_int_215| (Array Int (Array Int Int))) (|v_#valid_134| (Array Int Int)) (|v_#length_110| (Array Int Int)) (|v_#memory_$Pointer$.base_251| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_250| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_248| (Array Int (Array Int Int))) (|v_#memory_int_210| (Array Int (Array Int Int))) (|v_#memory_int_211| (Array Int (Array Int Int))) (|v_#memory_int_212| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_245| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_253| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_252| (Array Int (Array Int Int)))) (and (<= 0 (+ (select (select |v_#memory_int_215| |v_ULTIMATE.start_destroy_~l#1.base_34|) 0) 2147483648)) (= (store |v_#memory_$Pointer$.offset_245| |v_ULTIMATE.start_destroy_~l#1.base_34| (store (store (store (select |v_#memory_$Pointer$.offset_245| |v_ULTIMATE.start_destroy_~l#1.base_34|) 4 0) 12 0) 0 (select (select |v_#memory_$Pointer$.offset_248| |v_ULTIMATE.start_destroy_~l#1.base_34|) 0))) |v_#memory_$Pointer$.offset_248|) (<= (select (select |v_#memory_int_215| |v_ULTIMATE.start_destroy_~l#1.base_34|) 0) 2147483647) (= (store |v_#memory_int_210| |v_ULTIMATE.start_destroy_~l#1.base_34| (store (select |v_#memory_int_210| |v_ULTIMATE.start_destroy_~l#1.base_34|) 4 (select (select |v_#memory_int_211| |v_ULTIMATE.start_destroy_~l#1.base_34|) 4))) |v_#memory_int_211|) (not (= |v_ULTIMATE.start_destroy_~l#1.base_34| 0)) (= (store |v_#memory_$Pointer$.base_248| |v_ULTIMATE.start_destroy_~l#1.base_34| (store (store (store (select |v_#memory_$Pointer$.base_248| |v_ULTIMATE.start_destroy_~l#1.base_34|) 4 0) 12 0) 0 (select (select |v_#memory_$Pointer$.base_251| |v_ULTIMATE.start_destroy_~l#1.base_34|) 0))) |v_#memory_$Pointer$.base_251|) (= |#length| (store |v_#length_110| |v_ULTIMATE.start_destroy_~l#1.base_34| 24)) (= (store |v_#memory_int_212| |v_ULTIMATE.start_destroy_~l#1.base_34| (store (store (select |v_#memory_int_212| |v_ULTIMATE.start_destroy_~l#1.base_34|) 20 0) 0 (select (select |v_#memory_int_215| |v_ULTIMATE.start_destroy_~l#1.base_34|) 0))) |v_#memory_int_215|) (= |#memory_int| (store |v_#memory_int_215| |v_ULTIMATE.start_destroy_~l#1.base_34| (store (select |v_#memory_int_215| |v_ULTIMATE.start_destroy_~l#1.base_34|) 20 (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_34|) 20)))) (<= (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_34|) 20) 2147483647) (= (store |v_#memory_$Pointer$.offset_248| |v_ULTIMATE.start_destroy_~l#1.base_34| (store (select |v_#memory_$Pointer$.offset_248| |v_ULTIMATE.start_destroy_~l#1.base_34|) 20 (select (select |v_#memory_$Pointer$.offset_249| |v_ULTIMATE.start_destroy_~l#1.base_34|) 20))) |v_#memory_$Pointer$.offset_249|) (<= (+ |v_ULTIMATE.start_destroy_~l#1.base_34| 1) |#StackHeapBarrier|) (= (store |v_#memory_$Pointer$.base_251| |v_ULTIMATE.start_destroy_~l#1.base_34| (store (select |v_#memory_$Pointer$.base_251| |v_ULTIMATE.start_destroy_~l#1.base_34|) 20 (select (select |v_#memory_$Pointer$.base_252| |v_ULTIMATE.start_destroy_~l#1.base_34|) 20))) |v_#memory_$Pointer$.base_252|) (= (store |v_#memory_$Pointer$.base_253| |v_ULTIMATE.start_destroy_~l#1.base_34| (store (select |v_#memory_$Pointer$.base_253| |v_ULTIMATE.start_destroy_~l#1.base_34|) 20 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_34|) 20))) |#memory_$Pointer$.base|) (= |v_#memory_$Pointer$.offset_250| (store |v_#memory_$Pointer$.offset_249| |v_ULTIMATE.start_destroy_~l#1.base_34| (store (select |v_#memory_$Pointer$.offset_249| |v_ULTIMATE.start_destroy_~l#1.base_34|) 0 (select (select |v_#memory_$Pointer$.offset_250| |v_ULTIMATE.start_destroy_~l#1.base_34|) 0)))) (= (store |v_#valid_134| |v_ULTIMATE.start_destroy_~l#1.base_34| 0) |#valid|) (<= 0 (+ (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_34|) 20) 2147483648)) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_250| |v_ULTIMATE.start_destroy_~l#1.base_34| (store (select |v_#memory_$Pointer$.offset_250| |v_ULTIMATE.start_destroy_~l#1.base_34|) 20 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_destroy_~l#1.base_34|) 20)))) (= (store |v_#memory_int_211| |v_ULTIMATE.start_destroy_~l#1.base_34| (store (select |v_#memory_int_211| |v_ULTIMATE.start_destroy_~l#1.base_34|) 12 (select (select |v_#memory_int_212| |v_ULTIMATE.start_destroy_~l#1.base_34|) 12))) |v_#memory_int_212|) (= (select |v_#valid_134| |v_ULTIMATE.start_destroy_~l#1.base_34|) 0) (= (store |v_#memory_$Pointer$.base_252| |v_ULTIMATE.start_destroy_~l#1.base_34| (store (select |v_#memory_$Pointer$.base_252| |v_ULTIMATE.start_destroy_~l#1.base_34|) 0 (select (select |v_#memory_$Pointer$.base_253| |v_ULTIMATE.start_destroy_~l#1.base_34|) 0))) |v_#memory_$Pointer$.base_253|))) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2024-11-09 06:25:04,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:25:04,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:25:04,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 9] total 18 [2024-11-09 06:25:04,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987397999] [2024-11-09 06:25:04,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:25:04,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 06:25:04,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:25:04,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 06:25:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1423, Unknown=7, NotChecked=0, Total=1560 [2024-11-09 06:25:04,850 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:25:06,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:25:06,578 INFO L93 Difference]: Finished difference Result 134 states and 155 transitions. [2024-11-09 06:25:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 06:25:06,578 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2024-11-09 06:25:06,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:25:06,579 INFO L225 Difference]: With dead ends: 134 [2024-11-09 06:25:06,579 INFO L226 Difference]: Without dead ends: 123 [2024-11-09 06:25:06,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 47.1s TimeCoverageRelationStatistics Valid=146, Invalid=1653, Unknown=7, NotChecked=0, Total=1806 [2024-11-09 06:25:06,580 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 39 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:25:06,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 306 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 06:25:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-09 06:25:06,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 118. [2024-11-09 06:25:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 96 states have (on average 1.3854166666666667) internal successors, (133), 112 states have internal predecessors, (133), 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) [2024-11-09 06:25:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2024-11-09 06:25:06,584 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 34 [2024-11-09 06:25:06,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:25:06,584 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2024-11-09 06:25:06,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:25:06,584 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2024-11-09 06:25:06,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 06:25:06,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:25:06,585 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:25:06,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 06:25:06,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:06,786 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:25:06,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:25:06,786 INFO L85 PathProgramCache]: Analyzing trace with hash 306303592, now seen corresponding path program 1 times [2024-11-09 06:25:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:25:06,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783667270] [2024-11-09 06:25:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:25:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:25:09,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:25:09,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783667270] [2024-11-09 06:25:09,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783667270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:25:09,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424139994] [2024-11-09 06:25:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:09,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:09,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:25:09,085 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:25:09,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 06:25:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:09,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 06:25:09,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:25:09,725 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 06:25:09,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 06:25:09,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:25:10,142 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:25:10,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-09 06:25:10,412 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:25:10,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-09 06:25:10,726 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:25:10,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-09 06:25:11,077 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 [2024-11-09 06:25:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:25:11,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:25:11,350 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2121 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_2121) |c_ULTIMATE.start_create_~dll~0#1.base|) (+ |c_ULTIMATE.start_create_~dll~0#1.offset| 4))) 1)) is different from false [2024-11-09 06:25:11,364 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2121 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4)) v_ArrVal_2121) |c_ULTIMATE.start_create_~dll~0#1.base|) (+ |c_ULTIMATE.start_create_~dll~0#1.offset| 4))) 1)) is different from false [2024-11-09 06:25:11,396 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2024-11-09 06:25:11,396 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 33 treesize of output 32 [2024-11-09 06:25:11,409 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2121 (Array Int Int)) (v_ArrVal_2120 (Array Int Int))) (= |c_ULTIMATE.start_create_#t~mem10#1.base| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem10#1.base| v_ArrVal_2120))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4)) v_ArrVal_2121)) |c_ULTIMATE.start_create_~dll~0#1.base|) (+ |c_ULTIMATE.start_create_~dll~0#1.offset| 4)))) is different from false [2024-11-09 06:25:11,429 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2121 (Array Int Int)) (v_ArrVal_2120 (Array Int Int))) (let ((.cse2 (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2120))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_create_~now~0#1.base|) .cse2) v_ArrVal_2121)) |c_ULTIMATE.start_create_~dll~0#1.base|) (+ |c_ULTIMATE.start_create_~dll~0#1.offset| 4)))))) is different from false [2024-11-09 06:25:11,451 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2119 (Array Int Int)) (v_ArrVal_2121 (Array Int Int)) (v_ArrVal_2120 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_2119)) (.cse2 (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_2120))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_create_~now~0#1.base|) .cse2) v_ArrVal_2121)) |c_ULTIMATE.start_create_~dll~0#1.base|) (+ |c_ULTIMATE.start_create_~dll~0#1.offset| 4)))))) is different from false [2024-11-09 06:25:11,473 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2119 (Array Int Int)) (v_ArrVal_2121 (Array Int Int)) (v_ArrVal_2120 (Array Int Int))) (let ((.cse2 (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4))) (let ((.cse3 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse2) v_ArrVal_2119))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_2120))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_create_~now~0#1.base|) .cse2) v_ArrVal_2121)) |c_ULTIMATE.start_create_~dll~0#1.base|) (+ |c_ULTIMATE.start_create_~dll~0#1.offset| 4))))))) is different from false [2024-11-09 06:25:11,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:25:11,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 68 [2024-11-09 06:25:11,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:25:11,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5054 treesize of output 4039 [2024-11-09 06:25:11,753 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 1680 treesize of output 1552 [2024-11-09 06:25:11,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:25:11,801 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 1552 treesize of output 1448 [2024-11-09 06:25:11,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:25:11,846 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 1440 treesize of output 1120 [2024-11-09 06:25:13,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424139994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:25:13,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [204136147] [2024-11-09 06:25:13,660 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-09 06:25:13,660 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:25:13,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:25:13,661 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:25:13,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:25:26,510 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 06:25:26,559 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:26:40,997 WARN L286 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 285 DAG size of output: 269 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:27:30,874 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6062#(exists ((|v_ULTIMATE.start_loop_~node~0#1.base_55| Int)) (and (not (= (select |#valid| |v_ULTIMATE.start_loop_~node~0#1.base_55|) 1)) (or (not (= |v_ULTIMATE.start_loop_~node~0#1.base_55| 0)) (not (= |ULTIMATE.start_loop_~node~0#1.offset| 0)))))' at error location [2024-11-09 06:27:30,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:27:30,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:27:30,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 28 [2024-11-09 06:27:30,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139188239] [2024-11-09 06:27:30,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 06:27:30,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 06:27:30,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:27:30,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 06:27:30,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2633, Unknown=54, NotChecked=654, Total=3540 [2024-11-09 06:27:30,877 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand has 29 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 25 states have internal predecessors, (57), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 06:27:34,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:27:34,115 INFO L93 Difference]: Finished difference Result 122 states and 147 transitions. [2024-11-09 06:27:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 06:27:34,116 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 25 states have internal predecessors, (57), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2024-11-09 06:27:34,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:27:34,117 INFO L225 Difference]: With dead ends: 122 [2024-11-09 06:27:34,117 INFO L226 Difference]: Without dead ends: 122 [2024-11-09 06:27:34,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 128.2s TimeCoverageRelationStatistics Valid=311, Invalid=3691, Unknown=54, NotChecked=774, Total=4830 [2024-11-09 06:27:34,119 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 23 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:27:34,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 491 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 06:27:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-09 06:27:34,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2024-11-09 06:27:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 99 states have (on average 1.404040404040404) internal successors, (139), 115 states have internal predecessors, (139), 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) [2024-11-09 06:27:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 145 transitions. [2024-11-09 06:27:34,129 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 145 transitions. Word has length 37 [2024-11-09 06:27:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:27:34,130 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 145 transitions. [2024-11-09 06:27:34,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 25 states have internal predecessors, (57), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 06:27:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 145 transitions. [2024-11-09 06:27:34,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 06:27:34,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:27:34,131 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:27:34,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 06:27:34,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:27:34,332 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:27:34,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:27:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash 306303593, now seen corresponding path program 1 times [2024-11-09 06:27:34,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:27:34,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70527059] [2024-11-09 06:27:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:27:34,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:27:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:27:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:27:36,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:27:36,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70527059] [2024-11-09 06:27:36,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70527059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:27:36,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462695370] [2024-11-09 06:27:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:27:36,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:27:36,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:27:36,919 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:27:36,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 06:27:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:27:37,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-09 06:27:37,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:27:37,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 06:27:38,075 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 06:27:38,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 06:27:38,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 06:27:38,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:27:38,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:27:38,679 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 39 [2024-11-09 06:27:38,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 06:27:39,244 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-11-09 06:27:39,245 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 64 [2024-11-09 06:27:39,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 06:27:39,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 06:27:39,493 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:27:39,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-09 06:27:39,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 06:27:39,964 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 [2024-11-09 06:27:39,973 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 [2024-11-09 06:27:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:27:40,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:27:40,674 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_create_~dll~0#1.offset| 4))) (and (forall ((v_ArrVal_2307 (Array Int Int)) (v_ArrVal_2306 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_2306) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse0) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_2307) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse0)))) (forall ((v_ArrVal_2306 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_2306) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse0) 4))))) is different from false [2024-11-09 06:27:40,699 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4))) (.cse1 (+ |c_ULTIMATE.start_create_~dll~0#1.offset| 4))) (and (forall ((v_ArrVal_2306 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2306) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse1) 4))) (forall ((v_ArrVal_2307 (Array Int Int)) (v_ArrVal_2306 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2306) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2307) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse1)))))) is different from false [2024-11-09 06:27:40,726 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4)) (.cse1 (+ |c_ULTIMATE.start_create_~dll~0#1.offset| 4))) (and (forall ((v_ArrVal_2307 (Array Int Int)) (v_ArrVal_2306 (Array Int Int)) (v_ArrVal_2305 (Array Int Int)) (v_ArrVal_2304 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem10#1.base| v_ArrVal_2304))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) .cse3))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem10#1.base| v_ArrVal_2305) .cse0 v_ArrVal_2306) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_2307) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse1)))))) (forall ((v_ArrVal_2306 (Array Int Int)) (v_ArrVal_2305 (Array Int Int)) (v_ArrVal_2304 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem10#1.base| v_ArrVal_2305) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem10#1.base| v_ArrVal_2304) |c_ULTIMATE.start_create_~now~0#1.base|) .cse3) v_ArrVal_2306) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse1) 4))))) is different from false [2024-11-09 06:27:41,125 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem9#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem9#1.base|) (+ |c_ULTIMATE.start_create_#t~mem9#1.offset| 12) |c_ULTIMATE.start_create_~now~0#1.base|))) (.cse4 (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4))) (let ((.cse0 (select (select .cse5 |c_ULTIMATE.start_create_~now~0#1.base|) .cse4)) (.cse2 (+ |c_ULTIMATE.start_create_~dll~0#1.offset| 4))) (and (forall ((v_ArrVal_2307 (Array Int Int)) (v_ArrVal_2306 (Array Int Int)) (v_ArrVal_2305 (Array Int Int)) (v_ArrVal_2304 (Array Int Int)) (v_ArrVal_2303 (Array Int Int))) (let ((.cse3 (store .cse5 .cse0 v_ArrVal_2304))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) .cse4))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_2303) .cse0 v_ArrVal_2305) .cse1 v_ArrVal_2306) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse2) 12) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_2307) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse2)))))) (forall ((v_ArrVal_2306 (Array Int Int)) (v_ArrVal_2305 (Array Int Int)) (v_ArrVal_2304 (Array Int Int)) (v_ArrVal_2303 (Array Int Int))) (<= 0 (+ (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_2303) .cse0 v_ArrVal_2305) (select (select (store .cse5 .cse0 v_ArrVal_2304) |c_ULTIMATE.start_create_~now~0#1.base|) .cse4) v_ArrVal_2306) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse2) 4)))))) is different from false [2024-11-09 06:27:41,216 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse6 (+ |c_ULTIMATE.start_create_~now~0#1.offset| 4))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse6))) (let ((.cse8 (select |c_#memory_$Pointer$.base| .cse1)) (.cse4 (+ |c_ULTIMATE.start_create_~dll~0#1.offset| 4)) (.cse0 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse6))) (and (forall ((|v_ULTIMATE.start_create_#t~mem9#1.offset_33| Int)) (or (< |v_ULTIMATE.start_create_#t~mem9#1.offset_33| .cse0) (forall ((v_ArrVal_2307 (Array Int Int)) (v_ArrVal_2306 (Array Int Int)) (v_ArrVal_2305 (Array Int Int)) (v_ArrVal_2304 (Array Int Int)) (v_ArrVal_2303 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$.base| .cse1 (store .cse8 (+ 12 |v_ULTIMATE.start_create_#t~mem9#1.offset_33|) |c_ULTIMATE.start_create_~now~0#1.base|)))) (let ((.cse2 (select (select .cse7 |c_ULTIMATE.start_create_~now~0#1.base|) .cse6))) (let ((.cse5 (store .cse7 .cse2 v_ArrVal_2304))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_create_~now~0#1.base|) .cse6))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2303) .cse2 v_ArrVal_2305) .cse3 v_ArrVal_2306) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse4) 12) (select |c_#length| (select (select (store .cse5 .cse3 v_ArrVal_2307) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse4)))))))))) (forall ((|v_ULTIMATE.start_create_#t~mem9#1.offset_33| Int)) (or (forall ((v_ArrVal_2306 (Array Int Int)) (v_ArrVal_2305 (Array Int Int)) (v_ArrVal_2304 (Array Int Int)) (v_ArrVal_2303 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse10 (store |c_#memory_$Pointer$.base| .cse1 (store .cse8 (+ 12 |v_ULTIMATE.start_create_#t~mem9#1.offset_33|) |c_ULTIMATE.start_create_~now~0#1.base|)))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_create_~now~0#1.base|) .cse6))) (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2303) .cse9 v_ArrVal_2305) (select (select (store .cse10 .cse9 v_ArrVal_2304) |c_ULTIMATE.start_create_~now~0#1.base|) .cse6) v_ArrVal_2306))) |c_ULTIMATE.start_create_~dll~0#1.base|) .cse4) 4))) (< |v_ULTIMATE.start_create_#t~mem9#1.offset_33| .cse0))))))) is different from false [2024-11-09 06:27:41,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:27:41,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 142 [2024-11-09 06:27:41,284 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:27:41,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 82 [2024-11-09 06:27:41,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:27:41,337 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 1606 treesize of output 1551 [2024-11-09 06:27:41,377 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 155 treesize of output 151 [2024-11-09 06:27:41,400 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 131 treesize of output 113 [2024-11-09 06:27:41,416 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 260 treesize of output 248 [2024-11-09 06:27:41,427 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 248 treesize of output 232 [2024-11-09 06:27:41,438 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 232 treesize of output 208 [2024-11-09 06:27:41,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:27:41,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 297 [2024-11-09 06:27:41,788 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:27:41,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:27:41,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2024-11-09 06:27:41,811 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:27:41,812 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:27:41,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:27:41,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 56 [2024-11-09 06:27:41,826 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:27:41,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:27:41,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-09 06:27:42,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462695370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:27:42,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1345364732] [2024-11-09 06:27:42,355 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-09 06:27:42,356 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:27:42,356 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:27:42,356 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:27:42,356 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:27:54,988 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 06:27:55,042 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:29:24,394 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6347#true' at error location [2024-11-09 06:29:24,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:29:24,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:29:24,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2024-11-09 06:29:24,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125694778] [2024-11-09 06:29:24,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 06:29:24,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 06:29:24,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:29:24,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 06:29:24,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=3483, Unknown=58, NotChecked=620, Total=4422 [2024-11-09 06:29:24,398 INFO L87 Difference]: Start difference. First operand 121 states and 145 transitions. Second operand has 35 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 30 states have internal predecessors, (65), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 06:29:28,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:29:28,307 INFO L93 Difference]: Finished difference Result 122 states and 146 transitions. [2024-11-09 06:29:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 06:29:28,307 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 30 states have internal predecessors, (65), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2024-11-09 06:29:28,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:29:28,308 INFO L225 Difference]: With dead ends: 122 [2024-11-09 06:29:28,308 INFO L226 Difference]: Without dead ends: 122 [2024-11-09 06:29:28,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 95.1s TimeCoverageRelationStatistics Valid=375, Invalid=4553, Unknown=62, NotChecked=710, Total=5700 [2024-11-09 06:29:28,310 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:29:28,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 540 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 06:29:28,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-09 06:29:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2024-11-09 06:29:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 99 states have (on average 1.393939393939394) internal successors, (138), 115 states have internal predecessors, (138), 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) [2024-11-09 06:29:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2024-11-09 06:29:28,315 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 37 [2024-11-09 06:29:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:29:28,316 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2024-11-09 06:29:28,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 30 states have internal predecessors, (65), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 06:29:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2024-11-09 06:29:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 06:29:28,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:29:28,317 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:29:28,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 06:29:28,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 06:29:28,517 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:29:28,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:29:28,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1372999679, now seen corresponding path program 1 times [2024-11-09 06:29:28,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:29:28,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366118658] [2024-11-09 06:29:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:28,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:29:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:29:30,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:29:30,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366118658] [2024-11-09 06:29:30,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366118658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:29:30,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806338802] [2024-11-09 06:29:30,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:29:30,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:29:30,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:29:30,232 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:29:30,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 06:29:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:29:30,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 06:29:30,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:29:30,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 06:29:30,723 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 06:29:30,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 06:29:30,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:29:31,020 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:29:31,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-09 06:29:31,188 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:29:31,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-09 06:29:31,356 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:29:31,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-09 06:29:31,375 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 [2024-11-09 06:29:31,427 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2024-11-09 06:29:31,534 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 06:29:31,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 06:29:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 10 not checked. [2024-11-09 06:29:31,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:29:31,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806338802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:29:31,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [294553084] [2024-11-09 06:29:31,738 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-09 06:29:31,738 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:29:31,738 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:29:31,739 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:29:31,739 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:29:43,456 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 06:29:43,513 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:31:33,355 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6981#(exists ((|v_ULTIMATE.start_create_~now~0#1.base_83| Int)) (not (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_83|) 1)))' at error location [2024-11-09 06:31:33,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:31:33,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:31:33,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 25 [2024-11-09 06:31:33,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998839342] [2024-11-09 06:31:33,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:33,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 06:31:33,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:31:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 06:31:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1940, Unknown=36, NotChecked=90, Total=2256 [2024-11-09 06:31:33,358 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand has 26 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 22 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:31:39,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:31:39,624 INFO L93 Difference]: Finished difference Result 118 states and 141 transitions. [2024-11-09 06:31:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:31:39,625 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 22 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-11-09 06:31:39,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:31:39,625 INFO L225 Difference]: With dead ends: 118 [2024-11-09 06:31:39,626 INFO L226 Difference]: Without dead ends: 118 [2024-11-09 06:31:39,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 116.0s TimeCoverageRelationStatistics Valid=252, Invalid=2576, Unknown=38, NotChecked=104, Total=2970 [2024-11-09 06:31:39,627 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:31:39,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 405 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 608 Invalid, 0 Unknown, 49 Unchecked, 1.6s Time] [2024-11-09 06:31:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-09 06:31:39,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-09 06:31:39,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 99 states have (on average 1.3636363636363635) internal successors, (135), 112 states have internal predecessors, (135), 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) [2024-11-09 06:31:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2024-11-09 06:31:39,630 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 141 transitions. Word has length 38 [2024-11-09 06:31:39,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:31:39,631 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 141 transitions. [2024-11-09 06:31:39,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 22 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:31:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 141 transitions. [2024-11-09 06:31:39,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 06:31:39,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:31:39,631 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:39,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 06:31:39,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 06:31:39,832 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-09 06:31:39,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:39,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1372999680, now seen corresponding path program 1 times [2024-11-09 06:31:39,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:31:39,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919809903] [2024-11-09 06:31:39,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:39,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:42,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:31:42,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919809903] [2024-11-09 06:31:42,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919809903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:42,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047169651] [2024-11-09 06:31:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:42,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:42,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:31:42,065 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:42,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd14f16-3ef0-4ddb-b905-248a6471924a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 06:31:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:42,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-09 06:31:42,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:42,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 06:31:42,805 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 06:31:42,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 06:31:42,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:31:42,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:31:43,252 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:31:43,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-09 06:31:43,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 06:31:43,643 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:31:43,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-09 06:31:43,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 06:31:44,022 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:31:44,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-09 06:31:44,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 06:31:44,072 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 42 treesize of output 18 [2024-11-09 06:31:44,087 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 [2024-11-09 06:31:44,281 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-09 06:31:44,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:31:44,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 06:31:44,382 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 06:31:44,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 06:31:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-09 06:31:44,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:44,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047169651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:44,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [79326874] [2024-11-09 06:31:44,940 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-09 06:31:44,941 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:31:44,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:31:44,941 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:31:44,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:31:55,399 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-09 06:31:55,452 INFO L180 IcfgInterpreter]: Interpretation finished