./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0504_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0504_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E --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 32bit --witnessprinter.graph.data.programhash ad4b9fd301578a7ddb25530c70896459a49284f596306d3b6d0c853e43916174 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:31:32,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:31:32,905 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 04:31:32,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:31:32,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:31:32,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:31:32,961 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:31:32,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:31:32,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:31:32,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:31:32,962 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:31:32,962 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:31:32,962 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:31:32,962 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:31:32,962 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:31:32,962 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:31:32,963 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:31:32,963 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:31:32,963 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:31:32,963 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:31:32,963 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:31:32,963 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:31:32,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 04:31:32,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 04:31:32,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:31:32,968 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:31:32,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:31:32,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:31:32,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:31:32,969 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 04:31:32,969 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 04:31:32,970 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 04:31:32,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:31:32,970 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:31:32,970 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:31:32,970 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:31:32,971 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:31:32,972 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:31:32,972 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:31:32,972 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:31:32,972 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:31:32,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:31:32,973 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:31:32,973 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:31:32,973 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:31:32,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:31:32,973 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:31:32,973 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:31:32,974 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:31:32,974 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad4b9fd301578a7ddb25530c70896459a49284f596306d3b6d0c853e43916174 [2024-11-14 04:31:33,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:31:33,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:31:33,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:31:33,364 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:31:33,364 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:31:33,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/list-ext-properties/test-0504_1.i Unable to find full path for "g++" [2024-11-14 04:31:35,677 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:31:36,143 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:31:36,144 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/sv-benchmarks/c/list-ext-properties/test-0504_1.i [2024-11-14 04:31:36,156 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/data/7b1c4f19a/028bfe4a16ec4cce8f4080db2c6ba17c/FLAGeed06a194 [2024-11-14 04:31:36,171 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/data/7b1c4f19a/028bfe4a16ec4cce8f4080db2c6ba17c [2024-11-14 04:31:36,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:31:36,175 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:31:36,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:31:36,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:31:36,182 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:31:36,183 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:31:36" (1/1) ... [2024-11-14 04:31:36,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c969b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36, skipping insertion in model container [2024-11-14 04:31:36,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:31:36" (1/1) ... [2024-11-14 04:31:36,231 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:31:36,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:31:36,605 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:31:36,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:31:36,678 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:31:36,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36 WrapperNode [2024-11-14 04:31:36,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:31:36,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:31:36,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:31:36,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:31:36,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36" (1/1) ... [2024-11-14 04:31:36,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36" (1/1) ... [2024-11-14 04:31:36,729 INFO L138 Inliner]: procedures = 123, calls = 28, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 112 [2024-11-14 04:31:36,730 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:31:36,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:31:36,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:31:36,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:31:36,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36" (1/1) ... [2024-11-14 04:31:36,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36" (1/1) ... [2024-11-14 04:31:36,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36" (1/1) ... [2024-11-14 04:31:36,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36" (1/1) ... [2024-11-14 04:31:36,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36" (1/1) ... [2024-11-14 04:31:36,758 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36" (1/1) ... [2024-11-14 04:31:36,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36" (1/1) ... [2024-11-14 04:31:36,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36" (1/1) ... [2024-11-14 04:31:36,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:31:36,765 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:31:36,765 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:31:36,765 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:31:36,766 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36" (1/1) ... [2024-11-14 04:31:36,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:31:36,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:36,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:31:36,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:31:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:31:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:31:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 04:31:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:31:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 04:31:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 04:31:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:31:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:31:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:31:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:31:37,000 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:31:37,002 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:31:37,507 INFO L? ?]: Removed 92 outVars from TransFormulas that were not future-live. [2024-11-14 04:31:37,507 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:31:37,587 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:31:37,588 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-14 04:31:37,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:31:37 BoogieIcfgContainer [2024-11-14 04:31:37,590 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:31:37,594 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:31:37,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:31:37,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:31:37,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:31:36" (1/3) ... [2024-11-14 04:31:37,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbddc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:31:37, skipping insertion in model container [2024-11-14 04:31:37,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:36" (2/3) ... [2024-11-14 04:31:37,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbddc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:31:37, skipping insertion in model container [2024-11-14 04:31:37,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:31:37" (3/3) ... [2024-11-14 04:31:37,604 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0504_1.i [2024-11-14 04:31:37,624 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:31:37,627 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0504_1.i that has 1 procedures, 81 locations, 1 initial locations, 4 loop locations, and 43 error locations. [2024-11-14 04:31:37,678 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:31:37,695 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;@5bd0c937, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:31:37,695 INFO L334 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-11-14 04:31:37,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 80 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:37,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 04:31:37,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:37,711 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 04:31:37,712 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:37,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:37,720 INFO L85 PathProgramCache]: Analyzing trace with hash 6255143, now seen corresponding path program 1 times [2024-11-14 04:31:37,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:37,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756674934] [2024-11-14 04:31:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:37,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:38,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:38,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756674934] [2024-11-14 04:31:38,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756674934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:38,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:38,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:31:38,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957817130] [2024-11-14 04:31:38,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:38,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:31:38,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:31:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:38,184 INFO L87 Difference]: Start difference. First operand has 81 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 80 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:38,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:38,416 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2024-11-14 04:31:38,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:31:38,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 04:31:38,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:38,431 INFO L225 Difference]: With dead ends: 73 [2024-11-14 04:31:38,431 INFO L226 Difference]: Without dead ends: 72 [2024-11-14 04:31:38,434 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 [2024-11-14 04:31:38,440 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 29 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:38,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 56 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:31:38,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-14 04:31:38,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-14 04:31:38,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 37 states have (on average 2.081081081081081) internal successors, (77), 71 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:38,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2024-11-14 04:31:38,490 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 4 [2024-11-14 04:31:38,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:38,490 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2024-11-14 04:31:38,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:38,491 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2024-11-14 04:31:38,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 04:31:38,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:38,491 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 04:31:38,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:31:38,492 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:38,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:38,493 INFO L85 PathProgramCache]: Analyzing trace with hash 6255144, now seen corresponding path program 1 times [2024-11-14 04:31:38,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:38,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312935013] [2024-11-14 04:31:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:38,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:38,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:38,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312935013] [2024-11-14 04:31:38,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312935013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:38,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:38,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:31:38,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85180098] [2024-11-14 04:31:38,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:38,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:31:38,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:38,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:31:38,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:38,632 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:38,807 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2024-11-14 04:31:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:31:38,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 04:31:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:38,809 INFO L225 Difference]: With dead ends: 75 [2024-11-14 04:31:38,810 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 04:31:38,810 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 [2024-11-14 04:31:38,811 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:38,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 82 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:31:38,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 04:31:38,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2024-11-14 04:31:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 72 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2024-11-14 04:31:38,827 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 4 [2024-11-14 04:31:38,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:38,828 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2024-11-14 04:31:38,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:38,828 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2024-11-14 04:31:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 04:31:38,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:38,829 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 04:31:38,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:31:38,829 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:38,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:38,833 INFO L85 PathProgramCache]: Analyzing trace with hash 193748874, now seen corresponding path program 1 times [2024-11-14 04:31:38,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:38,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339474681] [2024-11-14 04:31:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:38,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:38,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:38,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339474681] [2024-11-14 04:31:38,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339474681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:38,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:38,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:31:38,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460250478] [2024-11-14 04:31:38,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:38,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:31:38,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:38,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:31:38,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:38,918 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:38,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:38,992 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2024-11-14 04:31:38,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:31:38,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 04:31:38,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:38,994 INFO L225 Difference]: With dead ends: 76 [2024-11-14 04:31:38,994 INFO L226 Difference]: Without dead ends: 76 [2024-11-14 04:31:38,995 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 [2024-11-14 04:31:38,995 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:38,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:38,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-14 04:31:39,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-14 04:31:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.8695652173913044) internal successors, (86), 75 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2024-11-14 04:31:39,002 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 5 [2024-11-14 04:31:39,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:39,003 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2024-11-14 04:31:39,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2024-11-14 04:31:39,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 04:31:39,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:39,003 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 04:31:39,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:31:39,004 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:39,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:39,004 INFO L85 PathProgramCache]: Analyzing trace with hash 193751062, now seen corresponding path program 1 times [2024-11-14 04:31:39,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:39,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786919366] [2024-11-14 04:31:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:39,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:39,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:39,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786919366] [2024-11-14 04:31:39,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786919366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:39,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:39,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 04:31:39,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842140964] [2024-11-14 04:31:39,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:39,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:31:39,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:39,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:31:39,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:39,038 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:39,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:39,163 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2024-11-14 04:31:39,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:31:39,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 04:31:39,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:39,165 INFO L225 Difference]: With dead ends: 77 [2024-11-14 04:31:39,165 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 04:31:39,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:39,167 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:39,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:39,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 04:31:39,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-14 04:31:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:39,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2024-11-14 04:31:39,184 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 5 [2024-11-14 04:31:39,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:39,184 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2024-11-14 04:31:39,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:39,185 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2024-11-14 04:31:39,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 04:31:39,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:39,187 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:39,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:31:39,188 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:39,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:39,188 INFO L85 PathProgramCache]: Analyzing trace with hash 566382550, now seen corresponding path program 1 times [2024-11-14 04:31:39,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:39,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730140807] [2024-11-14 04:31:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:39,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:39,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:39,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730140807] [2024-11-14 04:31:39,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730140807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:39,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:39,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:31:39,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135104229] [2024-11-14 04:31:39,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:39,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:31:39,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:39,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:31:39,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:31:39,833 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:39,985 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2024-11-14 04:31:39,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:31:39,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-14 04:31:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:39,988 INFO L225 Difference]: With dead ends: 72 [2024-11-14 04:31:39,988 INFO L226 Difference]: Without dead ends: 72 [2024-11-14 04:31:39,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:31:39,990 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 46 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:39,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 55 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:39,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-14 04:31:40,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2024-11-14 04:31:40,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 65 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:40,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2024-11-14 04:31:40,004 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 11 [2024-11-14 04:31:40,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:40,004 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2024-11-14 04:31:40,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:40,004 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2024-11-14 04:31:40,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 04:31:40,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:40,005 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:40,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:31:40,008 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:40,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:40,009 INFO L85 PathProgramCache]: Analyzing trace with hash 377989869, now seen corresponding path program 1 times [2024-11-14 04:31:40,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:40,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900328980] [2024-11-14 04:31:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:40,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:40,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:40,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900328980] [2024-11-14 04:31:40,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900328980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:40,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:40,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:31:40,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332599108] [2024-11-14 04:31:40,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:40,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:31:40,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:40,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:31:40,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:40,193 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:40,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:40,325 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2024-11-14 04:31:40,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:31:40,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-14 04:31:40,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:40,331 INFO L225 Difference]: With dead ends: 62 [2024-11-14 04:31:40,332 INFO L226 Difference]: Without dead ends: 62 [2024-11-14 04:31:40,332 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 [2024-11-14 04:31:40,333 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:40,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 64 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:40,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-14 04:31:40,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-14 04:31:40,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 61 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2024-11-14 04:31:40,345 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 12 [2024-11-14 04:31:40,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:40,346 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2024-11-14 04:31:40,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:40,346 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2024-11-14 04:31:40,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 04:31:40,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:40,347 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:40,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:31:40,348 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:40,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:40,348 INFO L85 PathProgramCache]: Analyzing trace with hash 377989870, now seen corresponding path program 1 times [2024-11-14 04:31:40,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:40,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349736004] [2024-11-14 04:31:40,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:40,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:40,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:40,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349736004] [2024-11-14 04:31:40,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349736004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:40,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:40,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:31:40,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128479434] [2024-11-14 04:31:40,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:40,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:31:40,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:40,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:31:40,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:40,590 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:40,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:40,703 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2024-11-14 04:31:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:31:40,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-14 04:31:40,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:40,705 INFO L225 Difference]: With dead ends: 58 [2024-11-14 04:31:40,707 INFO L226 Difference]: Without dead ends: 58 [2024-11-14 04:31:40,707 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 [2024-11-14 04:31:40,708 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:40,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 69 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-14 04:31:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-14 04:31:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 57 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2024-11-14 04:31:40,719 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 12 [2024-11-14 04:31:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:40,719 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2024-11-14 04:31:40,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2024-11-14 04:31:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 04:31:40,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:40,721 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:40,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 04:31:40,722 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:40,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:40,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1170912913, now seen corresponding path program 1 times [2024-11-14 04:31:40,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:40,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026757709] [2024-11-14 04:31:40,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:40,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:40,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:40,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026757709] [2024-11-14 04:31:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026757709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:40,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:40,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:31:40,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675796925] [2024-11-14 04:31:40,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:40,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:31:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:31:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:40,847 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:40,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:40,929 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2024-11-14 04:31:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:31:40,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-14 04:31:40,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:40,932 INFO L225 Difference]: With dead ends: 76 [2024-11-14 04:31:40,932 INFO L226 Difference]: Without dead ends: 76 [2024-11-14 04:31:40,932 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 [2024-11-14 04:31:40,933 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 10 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:40,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 86 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:40,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-14 04:31:40,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2024-11-14 04:31:40,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 55 states have (on average 1.490909090909091) internal successors, (82), 73 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2024-11-14 04:31:40,945 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 13 [2024-11-14 04:31:40,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:40,946 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2024-11-14 04:31:40,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:40,946 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2024-11-14 04:31:40,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 04:31:40,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:40,947 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:40,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 04:31:40,951 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:40,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:40,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1823848161, now seen corresponding path program 1 times [2024-11-14 04:31:40,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:40,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542227961] [2024-11-14 04:31:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:40,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:41,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:41,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542227961] [2024-11-14 04:31:41,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542227961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:41,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:41,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:31:41,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312569472] [2024-11-14 04:31:41,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:41,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:31:41,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:41,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:31:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:31:41,528 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:41,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:41,794 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2024-11-14 04:31:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:31:41,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-14 04:31:41,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:41,796 INFO L225 Difference]: With dead ends: 101 [2024-11-14 04:31:41,797 INFO L226 Difference]: Without dead ends: 101 [2024-11-14 04:31:41,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:31:41,798 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:41,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 141 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:31:41,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-14 04:31:41,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2024-11-14 04:31:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 67 states have (on average 1.462686567164179) internal successors, (98), 85 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2024-11-14 04:31:41,806 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 14 [2024-11-14 04:31:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:41,806 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2024-11-14 04:31:41,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:41,807 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2024-11-14 04:31:41,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 04:31:41,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:41,808 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:41,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 04:31:41,808 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:41,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:41,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1823848160, now seen corresponding path program 1 times [2024-11-14 04:31:41,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:41,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920355827] [2024-11-14 04:31:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:41,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:42,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:42,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920355827] [2024-11-14 04:31:42,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920355827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:42,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:42,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 04:31:42,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693096865] [2024-11-14 04:31:42,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:42,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:31:42,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:42,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:31:42,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:31:42,900 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:43,482 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2024-11-14 04:31:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:31:43,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-14 04:31:43,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:43,484 INFO L225 Difference]: With dead ends: 100 [2024-11-14 04:31:43,484 INFO L226 Difference]: Without dead ends: 100 [2024-11-14 04:31:43,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-14 04:31:43,486 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 76 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:43,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 178 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:31:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-14 04:31:43,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 86. [2024-11-14 04:31:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 85 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2024-11-14 04:31:43,496 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 14 [2024-11-14 04:31:43,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:43,496 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2024-11-14 04:31:43,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:43,497 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2024-11-14 04:31:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 04:31:43,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:43,497 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:43,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 04:31:43,497 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:43,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1614710155, now seen corresponding path program 1 times [2024-11-14 04:31:43,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:43,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612703735] [2024-11-14 04:31:43,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:43,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:43,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:43,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612703735] [2024-11-14 04:31:43,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612703735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:43,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:43,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:31:43,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527068717] [2024-11-14 04:31:43,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:43,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:31:43,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:43,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:31:43,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:31:43,595 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:43,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:43,790 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2024-11-14 04:31:43,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:31:43,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-14 04:31:43,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:43,792 INFO L225 Difference]: With dead ends: 92 [2024-11-14 04:31:43,793 INFO L226 Difference]: Without dead ends: 92 [2024-11-14 04:31:43,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:31:43,794 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 37 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:43,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 67 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:31:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-14 04:31:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2024-11-14 04:31:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 69 states have (on average 1.4492753623188406) internal successors, (100), 87 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2024-11-14 04:31:43,804 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 17 [2024-11-14 04:31:43,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:43,805 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2024-11-14 04:31:43,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:43,805 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2024-11-14 04:31:43,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 04:31:43,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:43,810 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:43,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 04:31:43,810 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:43,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:43,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1614710154, now seen corresponding path program 1 times [2024-11-14 04:31:43,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:43,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088873327] [2024-11-14 04:31:43,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:43,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:43,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:43,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088873327] [2024-11-14 04:31:43,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088873327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:43,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:43,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:31:43,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217467626] [2024-11-14 04:31:43,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:43,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:31:43,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:43,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:31:43,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:31:43,987 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:44,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:44,183 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2024-11-14 04:31:44,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:31:44,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-14 04:31:44,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:44,185 INFO L225 Difference]: With dead ends: 116 [2024-11-14 04:31:44,185 INFO L226 Difference]: Without dead ends: 116 [2024-11-14 04:31:44,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:31:44,186 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 23 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:44,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 92 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:31:44,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-14 04:31:44,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 108. [2024-11-14 04:31:44,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 89 states have (on average 1.4269662921348314) internal successors, (127), 107 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2024-11-14 04:31:44,197 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 17 [2024-11-14 04:31:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:44,197 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2024-11-14 04:31:44,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:44,198 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2024-11-14 04:31:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 04:31:44,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:44,198 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:44,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-14 04:31:44,199 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:44,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:44,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1614707967, now seen corresponding path program 1 times [2024-11-14 04:31:44,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:44,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283320902] [2024-11-14 04:31:44,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:44,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:44,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:44,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283320902] [2024-11-14 04:31:44,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283320902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:31:44,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642524104] [2024-11-14 04:31:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:44,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:44,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:44,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:31:44,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:31:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:44,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:31:44,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:31:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:44,558 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:31:44,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642524104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:44,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:31:44,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-14 04:31:44,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126433708] [2024-11-14 04:31:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:44,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:31:44,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:44,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:31:44,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:31:44,560 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:44,620 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2024-11-14 04:31:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:31:44,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-14 04:31:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:44,622 INFO L225 Difference]: With dead ends: 108 [2024-11-14 04:31:44,622 INFO L226 Difference]: Without dead ends: 108 [2024-11-14 04:31:44,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:31:44,623 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 44 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:44,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 71 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:44,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-14 04:31:44,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-14 04:31:44,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 89 states have (on average 1.404494382022472) internal successors, (125), 107 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:44,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2024-11-14 04:31:44,636 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 17 [2024-11-14 04:31:44,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:44,636 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2024-11-14 04:31:44,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:44,637 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2024-11-14 04:31:44,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 04:31:44,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:44,637 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:44,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:31:44,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-14 04:31:44,839 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:44,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1483594570, now seen corresponding path program 1 times [2024-11-14 04:31:44,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:44,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544368902] [2024-11-14 04:31:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:44,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:31:44,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:44,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544368902] [2024-11-14 04:31:44,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544368902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:44,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:44,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:31:44,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080990539] [2024-11-14 04:31:44,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:44,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:31:44,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:44,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:31:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:31:44,937 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:45,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:45,097 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2024-11-14 04:31:45,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:31:45,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 04:31:45,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:45,099 INFO L225 Difference]: With dead ends: 126 [2024-11-14 04:31:45,099 INFO L226 Difference]: Without dead ends: 126 [2024-11-14 04:31:45,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:31:45,100 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:45,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 69 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:45,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-14 04:31:45,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 115. [2024-11-14 04:31:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 97 states have (on average 1.443298969072165) internal successors, (140), 114 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 140 transitions. [2024-11-14 04:31:45,106 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 140 transitions. Word has length 18 [2024-11-14 04:31:45,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:45,106 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 140 transitions. [2024-11-14 04:31:45,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 140 transitions. [2024-11-14 04:31:45,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 04:31:45,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:45,107 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:45,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-14 04:31:45,108 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:45,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:45,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1483594571, now seen corresponding path program 1 times [2024-11-14 04:31:45,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:45,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945966585] [2024-11-14 04:31:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:45,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:45,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:45,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945966585] [2024-11-14 04:31:45,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945966585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:45,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:45,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:31:45,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782073902] [2024-11-14 04:31:45,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:45,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:31:45,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:45,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:31:45,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:31:45,296 INFO L87 Difference]: Start difference. First operand 115 states and 140 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:45,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:45,550 INFO L93 Difference]: Finished difference Result 144 states and 175 transitions. [2024-11-14 04:31:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:31:45,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 04:31:45,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:45,552 INFO L225 Difference]: With dead ends: 144 [2024-11-14 04:31:45,552 INFO L226 Difference]: Without dead ends: 144 [2024-11-14 04:31:45,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:31:45,553 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 40 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:45,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 101 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:31:45,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-14 04:31:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 131. [2024-11-14 04:31:45,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 113 states have (on average 1.5132743362831858) internal successors, (171), 130 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:45,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 171 transitions. [2024-11-14 04:31:45,564 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 171 transitions. Word has length 18 [2024-11-14 04:31:45,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:45,564 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 171 transitions. [2024-11-14 04:31:45,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:45,565 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 171 transitions. [2024-11-14 04:31:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 04:31:45,565 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:45,566 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:45,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-14 04:31:45,568 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:45,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:45,569 INFO L85 PathProgramCache]: Analyzing trace with hash -194705471, now seen corresponding path program 1 times [2024-11-14 04:31:45,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:45,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672202429] [2024-11-14 04:31:45,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:45,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:45,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:45,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672202429] [2024-11-14 04:31:45,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672202429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:45,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:45,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:31:45,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986713343] [2024-11-14 04:31:45,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:45,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:31:45,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:45,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:31:45,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:31:45,914 INFO L87 Difference]: Start difference. First operand 131 states and 171 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:46,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:46,130 INFO L93 Difference]: Finished difference Result 144 states and 185 transitions. [2024-11-14 04:31:46,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:31:46,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-14 04:31:46,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:46,131 INFO L225 Difference]: With dead ends: 144 [2024-11-14 04:31:46,132 INFO L226 Difference]: Without dead ends: 144 [2024-11-14 04:31:46,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:31:46,133 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:46,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 157 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:31:46,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-14 04:31:46,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2024-11-14 04:31:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 120 states have (on average 1.4916666666666667) internal successors, (179), 137 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 179 transitions. [2024-11-14 04:31:46,138 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 179 transitions. Word has length 20 [2024-11-14 04:31:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:46,139 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 179 transitions. [2024-11-14 04:31:46,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 179 transitions. [2024-11-14 04:31:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 04:31:46,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:46,140 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:46,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-14 04:31:46,141 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:46,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:46,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1740845700, now seen corresponding path program 1 times [2024-11-14 04:31:46,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:46,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090848993] [2024-11-14 04:31:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:46,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:46,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:46,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090848993] [2024-11-14 04:31:46,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090848993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:46,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:46,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:31:46,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62227118] [2024-11-14 04:31:46,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:46,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:31:46,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:46,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:31:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:31:46,234 INFO L87 Difference]: Start difference. First operand 138 states and 179 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:46,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:46,390 INFO L93 Difference]: Finished difference Result 165 states and 215 transitions. [2024-11-14 04:31:46,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:31:46,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 04:31:46,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:46,392 INFO L225 Difference]: With dead ends: 165 [2024-11-14 04:31:46,394 INFO L226 Difference]: Without dead ends: 165 [2024-11-14 04:31:46,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:31:46,396 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 58 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:46,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 135 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:46,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-14 04:31:46,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 156. [2024-11-14 04:31:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 138 states have (on average 1.5579710144927537) internal successors, (215), 155 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:46,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 215 transitions. [2024-11-14 04:31:46,404 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 215 transitions. Word has length 21 [2024-11-14 04:31:46,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:46,405 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 215 transitions. [2024-11-14 04:31:46,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:46,405 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 215 transitions. [2024-11-14 04:31:46,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 04:31:46,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:46,406 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:46,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 04:31:46,406 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:31:46,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:46,408 INFO L85 PathProgramCache]: Analyzing trace with hash 851643258, now seen corresponding path program 1 times [2024-11-14 04:31:46,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:46,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022063559] [2024-11-14 04:31:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:46,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:46,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022063559] [2024-11-14 04:31:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022063559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:31:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011792945] [2024-11-14 04:31:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:46,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:46,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:46,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:31:46,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:31:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:47,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 04:31:47,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:31:47,049 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 [2024-11-14 04:31:47,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 04:31:47,107 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-14 04:31:47,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2024-11-14 04:31:47,203 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-14 04:31:47,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-14 04:31:47,251 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-14 04:31:47,251 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 28 treesize of output 12 [2024-11-14 04:31:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:47,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:31:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:47,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011792945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:31:47,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1614244107] [2024-11-14 04:31:47,357 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2024-11-14 04:31:47,358 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:31:47,362 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:31:47,367 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:31:47,368 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:31:56,948 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:32:50,135 WARN L286 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 271 DAG size of output: 254 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:33:06,844 WARN L286 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 275 DAG size of output: 258 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:33:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1614244107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:33:08,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:33:08,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7, 7, 6] total 25 [2024-11-14 04:33:08,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892812139] [2024-11-14 04:33:08,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:33:08,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 04:33:08,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:33:08,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 04:33:08,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=525, Unknown=20, NotChecked=0, Total=650 [2024-11-14 04:33:08,124 INFO L87 Difference]: Start difference. First operand 156 states and 215 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:33:11,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:33:13,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:33:15,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:33:17,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:33:19,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:33:22,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:33:24,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:33:26,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:33:29,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:33:30,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:33:43,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:33:45,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:33:47,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:34:09,781 WARN L286 SmtUtils]: Spent 11.66s on a formula simplification. DAG size of input: 226 DAG size of output: 209 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:34:12,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:34:14,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:34:16,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:34:18,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:34:21,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:34:23,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:34:25,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:34:27,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:35:05,140 WARN L286 SmtUtils]: Spent 29.27s on a formula simplification. DAG size of input: 239 DAG size of output: 236 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:35:07,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:35:09,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:35:11,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:35:13,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:35:15,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:35:18,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:35:20,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:35:23,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:35:26,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:35:28,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:35:31,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:35:34,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:35:36,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:35:39,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:35:42,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:36:10,620 WARN L286 SmtUtils]: Spent 13.52s on a formula simplification. DAG size of input: 214 DAG size of output: 217 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:36:12,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:36:14,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:36:17,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:36:19,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:36:22,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:36:24,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:36:27,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:36:28,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:36:30,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:36:33,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:36:35,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:36:37,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:36:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:36:39,924 INFO L93 Difference]: Finished difference Result 158 states and 216 transitions. [2024-11-14 04:36:39,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 04:36:39,925 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 04:36:39,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:36:39,926 INFO L225 Difference]: With dead ends: 158 [2024-11-14 04:36:39,926 INFO L226 Difference]: Without dead ends: 158 [2024-11-14 04:36:39,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 167.9s TimeCoverageRelationStatistics Valid=143, Invalid=748, Unknown=39, NotChecked=0, Total=930 [2024-11-14 04:36:39,927 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 13 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 4 mSolverCounterUnsat, 52 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 52 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:36:39,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 143 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 462 Invalid, 52 Unknown, 0 Unchecked, 115.1s Time] [2024-11-14 04:36:39,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-14 04:36:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2024-11-14 04:36:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 138 states have (on average 1.5434782608695652) internal successors, (213), 154 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:36:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 213 transitions. [2024-11-14 04:36:39,937 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 213 transitions. Word has length 23 [2024-11-14 04:36:39,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:36:39,937 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 213 transitions. [2024-11-14 04:36:39,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:36:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 213 transitions. [2024-11-14 04:36:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 04:36:39,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:36:39,938 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:36:39,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:36:40,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 04:36:40,143 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:36:40,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:36:40,143 INFO L85 PathProgramCache]: Analyzing trace with hash 851643259, now seen corresponding path program 1 times [2024-11-14 04:36:40,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:36:40,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058958572] [2024-11-14 04:36:40,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:36:40,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:36:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:36:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:36:41,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:36:41,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058958572] [2024-11-14 04:36:41,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058958572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:36:41,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442519192] [2024-11-14 04:36:41,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:36:41,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:36:41,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:36:41,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:36:41,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:36:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:36:41,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-14 04:36:41,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:36:41,310 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 [2024-11-14 04:36:41,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 04:36:41,505 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 [2024-11-14 04:36:41,640 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-14 04:36:41,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2024-11-14 04:36:41,947 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-14 04:36:41,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-14 04:36:42,031 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-14 04:36:42,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-14 04:36:42,197 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-14 04:36:42,197 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 28 treesize of output 12 [2024-11-14 04:36:42,212 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-14 04:36:42,212 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 15 treesize of output 7 [2024-11-14 04:36:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:36:42,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:36:43,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:36:43,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442519192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:36:43,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [572406951] [2024-11-14 04:36:43,108 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2024-11-14 04:36:43,108 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:36:43,109 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:36:43,109 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:36:43,109 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:36:50,861 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:37:28,054 WARN L286 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 242 DAG size of output: 233 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:37:45,307 WARN L286 SmtUtils]: Spent 8.79s on a formula simplification. DAG size of input: 271 DAG size of output: 254 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:38:04,084 WARN L286 SmtUtils]: Spent 8.98s on a formula simplification. DAG size of input: 275 DAG size of output: 258 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:38:04,939 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4108#(and (= |ULTIMATE.start_main_~y~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~x~0#1.offset|))' at error location [2024-11-14 04:38:04,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:38:04,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:38:04,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-14 04:38:04,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059126393] [2024-11-14 04:38:04,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:38:04,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 04:38:04,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:38:04,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 04:38:04,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1039, Unknown=20, NotChecked=0, Total=1190 [2024-11-14 04:38:04,946 INFO L87 Difference]: Start difference. First operand 155 states and 213 transitions. Second operand has 21 states, 20 states have (on average 2.55) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:38:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:38:07,688 INFO L93 Difference]: Finished difference Result 163 states and 220 transitions. [2024-11-14 04:38:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:38:07,689 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.55) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 04:38:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:38:07,690 INFO L225 Difference]: With dead ends: 163 [2024-11-14 04:38:07,690 INFO L226 Difference]: Without dead ends: 163 [2024-11-14 04:38:07,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 76.5s TimeCoverageRelationStatistics Valid=241, Invalid=1542, Unknown=23, NotChecked=0, Total=1806 [2024-11-14 04:38:07,692 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 25 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:38:07,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 336 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 04:38:07,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-14 04:38:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 146. [2024-11-14 04:38:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 130 states have (on average 1.5615384615384615) internal successors, (203), 145 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:38:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 203 transitions. [2024-11-14 04:38:07,698 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 203 transitions. Word has length 23 [2024-11-14 04:38:07,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:38:07,698 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 203 transitions. [2024-11-14 04:38:07,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.55) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:38:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 203 transitions. [2024-11-14 04:38:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 04:38:07,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:38:07,699 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] [2024-11-14 04:38:07,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:38:07,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:38:07,904 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:38:07,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:38:07,904 INFO L85 PathProgramCache]: Analyzing trace with hash 196034754, now seen corresponding path program 1 times [2024-11-14 04:38:07,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:38:07,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305780572] [2024-11-14 04:38:07,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:38:07,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:38:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:38:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:38:08,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:38:08,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305780572] [2024-11-14 04:38:08,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305780572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:38:08,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119876599] [2024-11-14 04:38:08,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:38:08,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:38:08,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:38:08,051 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:38:08,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:38:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:38:08,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:38:08,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:38:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:38:08,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:38:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:38:08,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119876599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:38:08,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1807405277] [2024-11-14 04:38:08,639 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-14 04:38:08,640 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:38:08,640 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:38:08,640 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:38:08,640 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:38:10,259 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:39:17,491 WARN L286 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 226 DAG size of output: 216 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:39:42,625 WARN L286 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 250 DAG size of output: 230 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:40:12,962 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4591#(and (= |ULTIMATE.start_main_~last~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~x~1#1.offset| 0) (= |ULTIMATE.start_main_~c1~0#1| 0) (= |ULTIMATE.start_main_~first~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~x~1#1.base|) 1)) (= |ULTIMATE.start_main_~c2~0#1| 0))' at error location [2024-11-14 04:40:12,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:40:12,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:40:12,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2024-11-14 04:40:12,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607569969] [2024-11-14 04:40:12,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:40:12,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:40:12,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:40:12,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:40:12,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=384, Unknown=36, NotChecked=0, Total=506 [2024-11-14 04:40:12,964 INFO L87 Difference]: Start difference. First operand 146 states and 203 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:40:13,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:40:13,233 INFO L93 Difference]: Finished difference Result 191 states and 259 transitions. [2024-11-14 04:40:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:40:13,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 04:40:13,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:40:13,235 INFO L225 Difference]: With dead ends: 191 [2024-11-14 04:40:13,235 INFO L226 Difference]: Without dead ends: 191 [2024-11-14 04:40:13,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 122.8s TimeCoverageRelationStatistics Valid=86, Invalid=384, Unknown=36, NotChecked=0, Total=506 [2024-11-14 04:40:13,236 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 34 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:40:13,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 135 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:40:13,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-14 04:40:13,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 180. [2024-11-14 04:40:13,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 164 states have (on average 1.579268292682927) internal successors, (259), 179 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:40:13,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 259 transitions. [2024-11-14 04:40:13,251 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 259 transitions. Word has length 24 [2024-11-14 04:40:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:40:13,251 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 259 transitions. [2024-11-14 04:40:13,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:40:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 259 transitions. [2024-11-14 04:40:13,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 04:40:13,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:40:13,256 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:40:13,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 04:40:13,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:40:13,457 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:40:13,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:40:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash 196036942, now seen corresponding path program 1 times [2024-11-14 04:40:13,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:40:13,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007537335] [2024-11-14 04:40:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:40:13,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:40:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:40:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:40:13,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:40:13,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007537335] [2024-11-14 04:40:13,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007537335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:40:13,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852150640] [2024-11-14 04:40:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:40:13,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:40:13,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:40:13,783 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:40:13,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:40:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:40:13,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:40:13,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:40:14,207 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 [2024-11-14 04:40:14,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:40:14,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:40:14,491 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_56| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_56|) 0)) (= |c_ULTIMATE.start_main_old_#valid#1| (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_56| 0)))) is different from false [2024-11-14 04:40:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-14 04:40:14,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852150640] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:40:14,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [46988136] [2024-11-14 04:40:14,516 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-14 04:40:14,516 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:40:14,516 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:40:14,516 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:40:14,516 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:40:15,952 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:41:06,350 WARN L286 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 215 DAG size of output: 205 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:41:26,022 WARN L286 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 226 DAG size of output: 216 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:41:52,359 WARN L286 SmtUtils]: Spent 9.34s on a formula simplification. DAG size of input: 250 DAG size of output: 230 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:42:25,161 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5126#(and (= |ULTIMATE.start_main_~last~0#1.offset| 0) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_old_#valid#1_10| (Array Int Int))) (not (= |v_ULTIMATE.start_main_old_#valid#1_10| |#valid|))) (= |ULTIMATE.start_main_~c2~0#1| 0) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2024-11-14 04:42:25,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:42:25,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:42:25,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 6 [2024-11-14 04:42:25,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938628311] [2024-11-14 04:42:25,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:42:25,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:42:25,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:42:25,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:42:25,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=544, Unknown=39, NotChecked=48, Total=702 [2024-11-14 04:42:25,164 INFO L87 Difference]: Start difference. First operand 180 states and 259 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:42:26,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:42:26,164 INFO L93 Difference]: Finished difference Result 184 states and 262 transitions. [2024-11-14 04:42:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:42:26,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 04:42:26,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:42:26,165 INFO L225 Difference]: With dead ends: 184 [2024-11-14 04:42:26,165 INFO L226 Difference]: Without dead ends: 175 [2024-11-14 04:42:26,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 129.7s TimeCoverageRelationStatistics Valid=80, Invalid=641, Unknown=39, NotChecked=52, Total=812 [2024-11-14 04:42:26,166 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:42:26,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 137 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 0 Unknown, 56 Unchecked, 0.7s Time] [2024-11-14 04:42:26,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-14 04:42:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-14 04:42:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 159 states have (on average 1.5911949685534592) internal successors, (253), 174 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:42:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 253 transitions. [2024-11-14 04:42:26,173 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 253 transitions. Word has length 24 [2024-11-14 04:42:26,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:42:26,174 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 253 transitions. [2024-11-14 04:42:26,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:42:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 253 transitions. [2024-11-14 04:42:26,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 04:42:26,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:42:26,175 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 04:42:26,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 04:42:26,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-14 04:42:26,376 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-14 04:42:26,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:42:26,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1468156250, now seen corresponding path program 1 times [2024-11-14 04:42:26,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:42:26,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425846275] [2024-11-14 04:42:26,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:42:26,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:42:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:42:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:42:26,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:42:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425846275] [2024-11-14 04:42:26,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425846275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:42:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238580854] [2024-11-14 04:42:26,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:42:26,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:42:26,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:42:26,877 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:42:26,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9a315e-4050-49f8-89bc-468b485d52aa/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 04:42:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:42:27,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:42:27,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:42:27,078 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 [2024-11-14 04:42:27,103 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 [2024-11-14 04:42:27,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:42:27,448 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 [2024-11-14 04:42:27,485 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 04:42:27,485 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 [2024-11-14 04:42:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:42:27,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:42:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:42:28,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238580854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:42:28,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1660609698] [2024-11-14 04:42:28,807 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:42:28,807 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:42:28,807 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:42:28,807 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:42:28,807 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:42:30,256 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:43:20,198 WARN L286 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 215 DAG size of output: 205 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:43:40,456 WARN L286 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 226 DAG size of output: 216 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:44:05,719 WARN L286 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 250 DAG size of output: 230 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:44:54,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1660609698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:44:54,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:44:54,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 4, 4] total 19 [2024-11-14 04:44:54,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253592176] [2024-11-14 04:44:54,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:44:54,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 04:44:54,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:44:54,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 04:44:54,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=250, Unknown=48, NotChecked=0, Total=380 [2024-11-14 04:44:54,825 INFO L87 Difference]: Start difference. First operand 175 states and 253 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:44:57,206 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] [2024-11-14 04:44:59,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:01,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:03,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:06,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:08,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:10,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:12,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:14,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:16,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:19,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:21,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:23,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:25,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:28,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:30,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:32,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:34,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:36,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:38,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:40,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:42,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:44,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:47,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:49,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:51,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:53,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:55,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:57,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:45:59,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:46:01,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]