./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0513_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0513_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2 --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 2cd9310cc22b48510db29915dc2047c5968d5424a204e513aea9283dac5ac7bf --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:33:59,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:33:59,578 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:33:59,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:33:59,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:33:59,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:33:59,640 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:33:59,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:33:59,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:33:59,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:33:59,646 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:33:59,646 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:33:59,646 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:33:59,647 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:33:59,647 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:33:59,648 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:33:59,648 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:33:59,648 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:33:59,649 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:33:59,649 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:33:59,649 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:33:59,657 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:33:59,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:33:59,658 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:33:59,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:33:59,658 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:33:59,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:33:59,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:33:59,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:33:59,659 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:33:59,659 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:33:59,660 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:33:59,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:33:59,660 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:33:59,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:33:59,665 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:33:59,665 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:33:59,665 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:33:59,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:33:59,666 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:33:59,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:33:59,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:59,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:33:59,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:33:59,671 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:33:59,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:33:59,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:33:59,671 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:33:59,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:33:59,671 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cd9310cc22b48510db29915dc2047c5968d5424a204e513aea9283dac5ac7bf [2024-11-02 12:34:00,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:34:00,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:34:00,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:34:00,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:34:00,139 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:34:00,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/list-ext-properties/test-0513_1.i Unable to find full path for "g++" [2024-11-02 12:34:02,188 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:34:02,517 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:34:02,518 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/sv-benchmarks/c/list-ext-properties/test-0513_1.i [2024-11-02 12:34:02,536 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/data/d04bf7577/5d01e5ed17184628bf07ea354a3a2eb3/FLAG20738f00e [2024-11-02 12:34:02,753 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/data/d04bf7577/5d01e5ed17184628bf07ea354a3a2eb3 [2024-11-02 12:34:02,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:34:02,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:34:02,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:34:02,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:34:02,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:34:02,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:34:02" (1/1) ... [2024-11-02 12:34:02,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51243af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:02, skipping insertion in model container [2024-11-02 12:34:02,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:34:02" (1/1) ... [2024-11-02 12:34:02,825 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:34:03,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:34:03,327 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:34:03,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:34:03,433 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:34:03,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:03 WrapperNode [2024-11-02 12:34:03,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:34:03,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:34:03,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:34:03,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:34:03,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:03" (1/1) ... [2024-11-02 12:34:03,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:03" (1/1) ... [2024-11-02 12:34:03,506 INFO L138 Inliner]: procedures = 123, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 149 [2024-11-02 12:34:03,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:34:03,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:34:03,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:34:03,508 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:34:03,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:03" (1/1) ... [2024-11-02 12:34:03,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:03" (1/1) ... [2024-11-02 12:34:03,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:03" (1/1) ... [2024-11-02 12:34:03,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:03" (1/1) ... [2024-11-02 12:34:03,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:03" (1/1) ... [2024-11-02 12:34:03,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:03" (1/1) ... [2024-11-02 12:34:03,554 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:03" (1/1) ... [2024-11-02 12:34:03,555 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:03" (1/1) ... [2024-11-02 12:34:03,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:34:03,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:34:03,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:34:03,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:34:03,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:03" (1/1) ... [2024-11-02 12:34:03,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:34:03,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:03,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:34:03,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:34:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:34:03,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:34:03,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:34:03,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:34:03,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:34:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:34:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:34:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:34:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:34:03,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:34:03,778 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:34:03,781 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:34:04,410 INFO L? ?]: Removed 161 outVars from TransFormulas that were not future-live. [2024-11-02 12:34:04,410 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:34:04,532 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:34:04,533 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-02 12:34:04,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:34:04 BoogieIcfgContainer [2024-11-02 12:34:04,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:34:04,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:34:04,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:34:04,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:34:04,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:34:02" (1/3) ... [2024-11-02 12:34:04,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f6a809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:34:04, skipping insertion in model container [2024-11-02 12:34:04,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:03" (2/3) ... [2024-11-02 12:34:04,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f6a809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:34:04, skipping insertion in model container [2024-11-02 12:34:04,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:34:04" (3/3) ... [2024-11-02 12:34:04,546 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0513_1.i [2024-11-02 12:34:04,560 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:34:04,561 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2024-11-02 12:34:04,607 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:34:04,613 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;@7ae03c3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:34:04,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2024-11-02 12:34:04,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 58 states have (on average 2.4827586206896552) internal successors, (144), 128 states have internal predecessors, (144), 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) [2024-11-02 12:34:04,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:34:04,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:04,625 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:34:04,626 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:04,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:04,631 INFO L85 PathProgramCache]: Analyzing trace with hash 8988236, now seen corresponding path program 1 times [2024-11-02 12:34:04,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:04,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551988977] [2024-11-02 12:34:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:04,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:04,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:04,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551988977] [2024-11-02 12:34:04,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551988977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:04,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:04,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:34:04,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286223173] [2024-11-02 12:34:04,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:04,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:34:04,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:04,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:34:04,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:34:04,818 INFO L87 Difference]: Start difference. First operand has 129 states, 58 states have (on average 2.4827586206896552) internal successors, (144), 128 states have internal predecessors, (144), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2024-11-02 12:34:04,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:04,888 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2024-11-02 12:34:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:34:04,891 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2024-11-02 12:34:04,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:04,902 INFO L225 Difference]: With dead ends: 129 [2024-11-02 12:34:04,902 INFO L226 Difference]: Without dead ends: 128 [2024-11-02 12:34:04,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:34:04,910 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:04,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:34:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-02 12:34:04,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-02 12:34:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 58 states have (on average 2.4310344827586206) internal successors, (141), 127 states have internal predecessors, (141), 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) [2024-11-02 12:34:04,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2024-11-02 12:34:04,959 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 4 [2024-11-02 12:34:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:04,959 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2024-11-02 12:34:04,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2024-11-02 12:34:04,960 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2024-11-02 12:34:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:34:04,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:04,960 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:34:04,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:34:04,961 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:04,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:04,962 INFO L85 PathProgramCache]: Analyzing trace with hash 9179498, now seen corresponding path program 1 times [2024-11-02 12:34:04,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:04,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637449051] [2024-11-02 12:34:04,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:04,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:05,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:05,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637449051] [2024-11-02 12:34:05,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637449051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:05,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:05,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:34:05,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270651138] [2024-11-02 12:34:05,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:05,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:34:05,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:05,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:34:05,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:34:05,088 INFO L87 Difference]: Start difference. First operand 128 states and 141 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) [2024-11-02 12:34:05,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:05,315 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2024-11-02 12:34:05,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:34:05,315 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 [2024-11-02 12:34:05,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:05,319 INFO L225 Difference]: With dead ends: 132 [2024-11-02 12:34:05,319 INFO L226 Difference]: Without dead ends: 132 [2024-11-02 12:34:05,320 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 [2024-11-02 12:34:05,322 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 48 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:05,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 130 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:05,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-02 12:34:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 126. [2024-11-02 12:34:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 61 states have (on average 2.3442622950819674) internal successors, (143), 125 states have internal predecessors, (143), 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) [2024-11-02 12:34:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2024-11-02 12:34:05,337 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 4 [2024-11-02 12:34:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:05,337 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2024-11-02 12:34:05,338 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) [2024-11-02 12:34:05,338 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2024-11-02 12:34:05,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:34:05,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:05,338 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:34:05,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:34:05,339 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:05,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:05,339 INFO L85 PathProgramCache]: Analyzing trace with hash 9179499, now seen corresponding path program 1 times [2024-11-02 12:34:05,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:05,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185157449] [2024-11-02 12:34:05,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:05,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:05,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:05,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185157449] [2024-11-02 12:34:05,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185157449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:05,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:05,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:34:05,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555705609] [2024-11-02 12:34:05,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:05,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:34:05,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:05,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:34:05,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:34:05,458 INFO L87 Difference]: Start difference. First operand 126 states and 143 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) [2024-11-02 12:34:05,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:05,625 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2024-11-02 12:34:05,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:34:05,626 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 [2024-11-02 12:34:05,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:05,627 INFO L225 Difference]: With dead ends: 122 [2024-11-02 12:34:05,627 INFO L226 Difference]: Without dead ends: 122 [2024-11-02 12:34:05,627 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 [2024-11-02 12:34:05,629 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 26 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:05,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 149 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-02 12:34:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-02 12:34:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 61 states have (on average 2.278688524590164) internal successors, (139), 121 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 139 transitions. [2024-11-02 12:34:05,637 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 139 transitions. Word has length 4 [2024-11-02 12:34:05,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:05,637 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 139 transitions. [2024-11-02 12:34:05,637 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) [2024-11-02 12:34:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 139 transitions. [2024-11-02 12:34:05,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:34:05,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:05,638 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 12:34:05,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:34:05,639 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:05,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:05,639 INFO L85 PathProgramCache]: Analyzing trace with hash 284313775, now seen corresponding path program 1 times [2024-11-02 12:34:05,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:05,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371127135] [2024-11-02 12:34:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:05,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:05,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:05,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371127135] [2024-11-02 12:34:05,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371127135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:05,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:05,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:34:05,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957657096] [2024-11-02 12:34:05,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:05,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:34:05,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:05,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:34:05,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:34:05,672 INFO L87 Difference]: Start difference. First operand 122 states and 139 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) [2024-11-02 12:34:05,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:05,860 INFO L93 Difference]: Finished difference Result 163 states and 182 transitions. [2024-11-02 12:34:05,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:34:05,861 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 [2024-11-02 12:34:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:05,862 INFO L225 Difference]: With dead ends: 163 [2024-11-02 12:34:05,862 INFO L226 Difference]: Without dead ends: 162 [2024-11-02 12:34:05,863 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 [2024-11-02 12:34:05,864 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 37 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:05,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 159 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:05,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-02 12:34:05,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 125. [2024-11-02 12:34:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 64 states have (on average 2.234375) internal successors, (143), 124 states have internal predecessors, (143), 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) [2024-11-02 12:34:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2024-11-02 12:34:05,902 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 5 [2024-11-02 12:34:05,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:05,902 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2024-11-02 12:34:05,902 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) [2024-11-02 12:34:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2024-11-02 12:34:05,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:34:05,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:05,903 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 12:34:05,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:34:05,908 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:05,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:05,909 INFO L85 PathProgramCache]: Analyzing trace with hash 284313679, now seen corresponding path program 1 times [2024-11-02 12:34:05,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:05,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454033290] [2024-11-02 12:34:05,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:05,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:06,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:06,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454033290] [2024-11-02 12:34:06,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454033290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:06,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:06,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:34:06,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728608620] [2024-11-02 12:34:06,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:06,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:34:06,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:06,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:34:06,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:34:06,021 INFO L87 Difference]: Start difference. First operand 125 states and 143 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) [2024-11-02 12:34:06,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:06,172 INFO L93 Difference]: Finished difference Result 134 states and 154 transitions. [2024-11-02 12:34:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:34:06,173 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 [2024-11-02 12:34:06,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:06,174 INFO L225 Difference]: With dead ends: 134 [2024-11-02 12:34:06,174 INFO L226 Difference]: Without dead ends: 133 [2024-11-02 12:34:06,175 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 [2024-11-02 12:34:06,176 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 12 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:06,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 184 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:06,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-02 12:34:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-02 12:34:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 72 states have (on average 2.125) internal successors, (153), 132 states have internal predecessors, (153), 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) [2024-11-02 12:34:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2024-11-02 12:34:06,195 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 5 [2024-11-02 12:34:06,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:06,195 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2024-11-02 12:34:06,195 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) [2024-11-02 12:34:06,195 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2024-11-02 12:34:06,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 12:34:06,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:06,196 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:06,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:34:06,196 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:06,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1574423178, now seen corresponding path program 1 times [2024-11-02 12:34:06,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:06,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214126085] [2024-11-02 12:34:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:06,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:06,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:06,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214126085] [2024-11-02 12:34:06,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214126085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:06,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:06,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:34:06,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451956517] [2024-11-02 12:34:06,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:06,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:34:06,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:06,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:34:06,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:34:06,317 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:06,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:06,449 INFO L93 Difference]: Finished difference Result 251 states and 282 transitions. [2024-11-02 12:34:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:34:06,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-02 12:34:06,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:06,451 INFO L225 Difference]: With dead ends: 251 [2024-11-02 12:34:06,452 INFO L226 Difference]: Without dead ends: 251 [2024-11-02 12:34:06,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:34:06,453 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 126 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:06,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 317 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:06,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-02 12:34:06,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 136. [2024-11-02 12:34:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 75 states have (on average 2.04) internal successors, (153), 135 states have internal predecessors, (153), 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) [2024-11-02 12:34:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 153 transitions. [2024-11-02 12:34:06,472 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 153 transitions. Word has length 10 [2024-11-02 12:34:06,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:06,472 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 153 transitions. [2024-11-02 12:34:06,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:06,472 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 153 transitions. [2024-11-02 12:34:06,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:34:06,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:06,473 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:06,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:34:06,473 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:06,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:06,474 INFO L85 PathProgramCache]: Analyzing trace with hash 972049197, now seen corresponding path program 1 times [2024-11-02 12:34:06,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:06,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148856303] [2024-11-02 12:34:06,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:06,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:06,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:06,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148856303] [2024-11-02 12:34:06,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148856303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:06,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:06,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:34:06,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270721740] [2024-11-02 12:34:06,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:06,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:34:06,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:06,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:34:06,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:34:06,621 INFO L87 Difference]: Start difference. First operand 136 states and 153 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2024-11-02 12:34:06,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:06,768 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions. [2024-11-02 12:34:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:34:06,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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 [2024-11-02 12:34:06,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:06,770 INFO L225 Difference]: With dead ends: 132 [2024-11-02 12:34:06,770 INFO L226 Difference]: Without dead ends: 132 [2024-11-02 12:34:06,771 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 [2024-11-02 12:34:06,772 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 15 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:06,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 146 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:06,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-02 12:34:06,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-02 12:34:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 75 states have (on average 1.9866666666666666) internal successors, (149), 131 states have internal predecessors, (149), 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) [2024-11-02 12:34:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2024-11-02 12:34:06,777 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 13 [2024-11-02 12:34:06,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:06,778 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2024-11-02 12:34:06,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2024-11-02 12:34:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2024-11-02 12:34:06,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:34:06,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:06,779 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:06,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:34:06,780 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:06,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:06,780 INFO L85 PathProgramCache]: Analyzing trace with hash 972049198, now seen corresponding path program 1 times [2024-11-02 12:34:06,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:06,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475747873] [2024-11-02 12:34:06,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:06,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:06,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:06,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475747873] [2024-11-02 12:34:06,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475747873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:06,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:06,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:34:06,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195308394] [2024-11-02 12:34:06,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:06,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:34:06,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:06,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:34:06,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:34:06,946 INFO L87 Difference]: Start difference. First operand 132 states and 149 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2024-11-02 12:34:07,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:07,172 INFO L93 Difference]: Finished difference Result 129 states and 146 transitions. [2024-11-02 12:34:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:34:07,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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 [2024-11-02 12:34:07,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:07,174 INFO L225 Difference]: With dead ends: 129 [2024-11-02 12:34:07,174 INFO L226 Difference]: Without dead ends: 129 [2024-11-02 12:34:07,174 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 [2024-11-02 12:34:07,176 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:07,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 155 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:07,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-02 12:34:07,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-02 12:34:07,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 75 states have (on average 1.9466666666666668) internal successors, (146), 128 states have internal predecessors, (146), 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) [2024-11-02 12:34:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 146 transitions. [2024-11-02 12:34:07,189 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 146 transitions. Word has length 13 [2024-11-02 12:34:07,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:07,190 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 146 transitions. [2024-11-02 12:34:07,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2024-11-02 12:34:07,193 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 146 transitions. [2024-11-02 12:34:07,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-02 12:34:07,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:07,197 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:07,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:34:07,197 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:07,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash 368432996, now seen corresponding path program 1 times [2024-11-02 12:34:07,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:07,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247779922] [2024-11-02 12:34:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:07,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:07,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:07,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247779922] [2024-11-02 12:34:07,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247779922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:07,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:07,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:34:07,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498200122] [2024-11-02 12:34:07,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:07,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:34:07,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:07,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:34:07,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:34:07,330 INFO L87 Difference]: Start difference. First operand 129 states and 146 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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) [2024-11-02 12:34:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:07,535 INFO L93 Difference]: Finished difference Result 186 states and 226 transitions. [2024-11-02 12:34:07,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:34:07,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 [2024-11-02 12:34:07,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:07,544 INFO L225 Difference]: With dead ends: 186 [2024-11-02 12:34:07,544 INFO L226 Difference]: Without dead ends: 186 [2024-11-02 12:34:07,544 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 [2024-11-02 12:34:07,545 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 83 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 216 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 [2024-11-02 12:34:07,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 216 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:07,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-02 12:34:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 129. [2024-11-02 12:34:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 75 states have (on average 1.92) internal successors, (144), 128 states have internal predecessors, (144), 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) [2024-11-02 12:34:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2024-11-02 12:34:07,564 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 18 [2024-11-02 12:34:07,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:07,564 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2024-11-02 12:34:07,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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) [2024-11-02 12:34:07,564 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2024-11-02 12:34:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-02 12:34:07,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:07,568 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:07,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:34:07,568 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:07,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:07,569 INFO L85 PathProgramCache]: Analyzing trace with hash 368432900, now seen corresponding path program 1 times [2024-11-02 12:34:07,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:07,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051319615] [2024-11-02 12:34:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:07,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:07,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:07,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051319615] [2024-11-02 12:34:07,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051319615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:07,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:07,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:34:07,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732090610] [2024-11-02 12:34:07,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:07,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:34:07,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:07,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:34:07,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:34:07,799 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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) [2024-11-02 12:34:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:07,977 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2024-11-02 12:34:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:34:07,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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 [2024-11-02 12:34:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:07,978 INFO L225 Difference]: With dead ends: 122 [2024-11-02 12:34:07,978 INFO L226 Difference]: Without dead ends: 122 [2024-11-02 12:34:07,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:34:07,979 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 43 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:07,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 114 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:07,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-02 12:34:07,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-02 12:34:07,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 76 states have (on average 1.8157894736842106) internal successors, (138), 121 states have internal predecessors, (138), 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) [2024-11-02 12:34:07,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 138 transitions. [2024-11-02 12:34:07,984 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 138 transitions. Word has length 18 [2024-11-02 12:34:07,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:07,984 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 138 transitions. [2024-11-02 12:34:07,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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) [2024-11-02 12:34:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 138 transitions. [2024-11-02 12:34:07,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-02 12:34:07,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:07,986 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:07,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:34:07,986 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:07,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:07,987 INFO L85 PathProgramCache]: Analyzing trace with hash 368432901, now seen corresponding path program 1 times [2024-11-02 12:34:07,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:07,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271602173] [2024-11-02 12:34:07,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:07,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:08,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:08,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271602173] [2024-11-02 12:34:08,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271602173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:08,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:08,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:34:08,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693718923] [2024-11-02 12:34:08,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:08,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:34:08,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:08,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:34:08,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:34:08,171 INFO L87 Difference]: Start difference. First operand 122 states and 138 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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) [2024-11-02 12:34:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:08,464 INFO L93 Difference]: Finished difference Result 173 states and 198 transitions. [2024-11-02 12:34:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:34:08,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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 [2024-11-02 12:34:08,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:08,466 INFO L225 Difference]: With dead ends: 173 [2024-11-02 12:34:08,466 INFO L226 Difference]: Without dead ends: 173 [2024-11-02 12:34:08,466 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 [2024-11-02 12:34:08,467 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 73 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:08,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 155 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:34:08,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-02 12:34:08,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 150. [2024-11-02 12:34:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 106 states have (on average 1.8679245283018868) internal successors, (198), 149 states have internal predecessors, (198), 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) [2024-11-02 12:34:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 198 transitions. [2024-11-02 12:34:08,471 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 198 transitions. Word has length 18 [2024-11-02 12:34:08,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:08,471 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 198 transitions. [2024-11-02 12:34:08,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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) [2024-11-02 12:34:08,472 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 198 transitions. [2024-11-02 12:34:08,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-02 12:34:08,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:08,473 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] [2024-11-02 12:34:08,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 12:34:08,473 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:08,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:08,473 INFO L85 PathProgramCache]: Analyzing trace with hash -376655476, now seen corresponding path program 1 times [2024-11-02 12:34:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:08,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863573299] [2024-11-02 12:34:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:08,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:08,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:08,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863573299] [2024-11-02 12:34:08,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863573299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:08,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:08,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:34:08,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863457743] [2024-11-02 12:34:08,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:08,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:34:08,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:08,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:34:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:34:08,570 INFO L87 Difference]: Start difference. First operand 150 states and 198 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2024-11-02 12:34:08,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:08,774 INFO L93 Difference]: Finished difference Result 175 states and 200 transitions. [2024-11-02 12:34:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:34:08,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2024-11-02 12:34:08,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:08,775 INFO L225 Difference]: With dead ends: 175 [2024-11-02 12:34:08,776 INFO L226 Difference]: Without dead ends: 175 [2024-11-02 12:34:08,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:34:08,776 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 73 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:08,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 262 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:08,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-02 12:34:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 151. [2024-11-02 12:34:08,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 107 states have (on average 1.8598130841121496) internal successors, (199), 150 states have internal predecessors, (199), 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) [2024-11-02 12:34:08,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 199 transitions. [2024-11-02 12:34:08,781 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 199 transitions. Word has length 22 [2024-11-02 12:34:08,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:08,781 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 199 transitions. [2024-11-02 12:34:08,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2024-11-02 12:34:08,781 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 199 transitions. [2024-11-02 12:34:08,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-02 12:34:08,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:08,782 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] [2024-11-02 12:34:08,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 12:34:08,783 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:08,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash -376609598, now seen corresponding path program 1 times [2024-11-02 12:34:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:08,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055432055] [2024-11-02 12:34:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:08,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:09,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:09,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055432055] [2024-11-02 12:34:09,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055432055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:09,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:09,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:34:09,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959141937] [2024-11-02 12:34:09,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:09,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:34:09,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:09,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:34:09,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:34:09,064 INFO L87 Difference]: Start difference. First operand 151 states and 199 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2024-11-02 12:34:09,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:09,288 INFO L93 Difference]: Finished difference Result 169 states and 219 transitions. [2024-11-02 12:34:09,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:34:09,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2024-11-02 12:34:09,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:09,290 INFO L225 Difference]: With dead ends: 169 [2024-11-02 12:34:09,290 INFO L226 Difference]: Without dead ends: 169 [2024-11-02 12:34:09,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:34:09,291 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 22 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:09,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 198 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-02 12:34:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 160. [2024-11-02 12:34:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 116 states have (on average 1.8189655172413792) internal successors, (211), 159 states have internal predecessors, (211), 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) [2024-11-02 12:34:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 211 transitions. [2024-11-02 12:34:09,299 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 211 transitions. Word has length 22 [2024-11-02 12:34:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:09,299 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 211 transitions. [2024-11-02 12:34:09,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2024-11-02 12:34:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 211 transitions. [2024-11-02 12:34:09,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-02 12:34:09,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:09,300 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] [2024-11-02 12:34:09,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-02 12:34:09,300 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:09,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:09,301 INFO L85 PathProgramCache]: Analyzing trace with hash -376609597, now seen corresponding path program 1 times [2024-11-02 12:34:09,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:09,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610475151] [2024-11-02 12:34:09,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:09,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:09,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:09,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610475151] [2024-11-02 12:34:09,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610475151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:09,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:09,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:34:09,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666977960] [2024-11-02 12:34:09,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:09,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:34:09,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:09,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:34:09,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:34:09,543 INFO L87 Difference]: Start difference. First operand 160 states and 211 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2024-11-02 12:34:09,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:09,731 INFO L93 Difference]: Finished difference Result 160 states and 209 transitions. [2024-11-02 12:34:09,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:34:09,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2024-11-02 12:34:09,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:09,733 INFO L225 Difference]: With dead ends: 160 [2024-11-02 12:34:09,733 INFO L226 Difference]: Without dead ends: 160 [2024-11-02 12:34:09,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:34:09,734 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 4 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:09,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 218 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:09,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-02 12:34:09,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 157. [2024-11-02 12:34:09,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 113 states have (on average 1.823008849557522) internal successors, (206), 156 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:09,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 206 transitions. [2024-11-02 12:34:09,740 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 206 transitions. Word has length 22 [2024-11-02 12:34:09,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:09,740 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 206 transitions. [2024-11-02 12:34:09,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2024-11-02 12:34:09,741 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 206 transitions. [2024-11-02 12:34:09,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:34:09,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:09,742 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, 1] [2024-11-02 12:34:09,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-02 12:34:09,742 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:09,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:09,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1806495496, now seen corresponding path program 1 times [2024-11-02 12:34:09,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:09,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436587860] [2024-11-02 12:34:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:09,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:10,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:10,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436587860] [2024-11-02 12:34:10,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436587860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:10,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:10,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 12:34:10,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481168903] [2024-11-02 12:34:10,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:10,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:34:10,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:10,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:34:10,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:34:10,212 INFO L87 Difference]: Start difference. First operand 157 states and 206 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:10,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:10,630 INFO L93 Difference]: Finished difference Result 275 states and 345 transitions. [2024-11-02 12:34:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-02 12:34:10,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:34:10,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:10,632 INFO L225 Difference]: With dead ends: 275 [2024-11-02 12:34:10,632 INFO L226 Difference]: Without dead ends: 275 [2024-11-02 12:34:10,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:34:10,633 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 236 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:10,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 357 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:34:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-02 12:34:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 196. [2024-11-02 12:34:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 152 states have (on average 1.7763157894736843) internal successors, (270), 195 states have internal predecessors, (270), 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) [2024-11-02 12:34:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 270 transitions. [2024-11-02 12:34:10,643 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 270 transitions. Word has length 25 [2024-11-02 12:34:10,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:10,643 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 270 transitions. [2024-11-02 12:34:10,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:10,644 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 270 transitions. [2024-11-02 12:34:10,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:34:10,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:10,644 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, 1] [2024-11-02 12:34:10,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-02 12:34:10,648 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:10,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:10,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1806493571, now seen corresponding path program 1 times [2024-11-02 12:34:10,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:10,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230379392] [2024-11-02 12:34:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:10,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:11,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:11,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230379392] [2024-11-02 12:34:11,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230379392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:11,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:11,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-02 12:34:11,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676102003] [2024-11-02 12:34:11,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:11,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 12:34:11,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 12:34:11,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-02 12:34:11,145 INFO L87 Difference]: Start difference. First operand 196 states and 270 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:11,599 INFO L93 Difference]: Finished difference Result 215 states and 286 transitions. [2024-11-02 12:34:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 12:34:11,600 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:34:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:11,601 INFO L225 Difference]: With dead ends: 215 [2024-11-02 12:34:11,601 INFO L226 Difference]: Without dead ends: 215 [2024-11-02 12:34:11,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:34:11,602 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 134 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:11,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 220 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:34:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-02 12:34:11,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 197. [2024-11-02 12:34:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 153 states have (on average 1.7777777777777777) internal successors, (272), 196 states have internal predecessors, (272), 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) [2024-11-02 12:34:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 272 transitions. [2024-11-02 12:34:11,608 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 272 transitions. Word has length 25 [2024-11-02 12:34:11,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:11,609 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 272 transitions. [2024-11-02 12:34:11,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:11,609 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 272 transitions. [2024-11-02 12:34:11,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:34:11,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:11,613 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, 1] [2024-11-02 12:34:11,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-02 12:34:11,613 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:11,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:11,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1806493572, now seen corresponding path program 1 times [2024-11-02 12:34:11,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:11,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746009651] [2024-11-02 12:34:11,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:11,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:12,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:12,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746009651] [2024-11-02 12:34:12,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746009651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:12,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:12,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:34:12,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356366696] [2024-11-02 12:34:12,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:12,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:34:12,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:12,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:34:12,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:34:12,318 INFO L87 Difference]: Start difference. First operand 197 states and 272 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:12,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:12,912 INFO L93 Difference]: Finished difference Result 274 states and 339 transitions. [2024-11-02 12:34:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:34:12,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:34:12,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:12,914 INFO L225 Difference]: With dead ends: 274 [2024-11-02 12:34:12,914 INFO L226 Difference]: Without dead ends: 274 [2024-11-02 12:34:12,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-11-02 12:34:12,915 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 272 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:12,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 208 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:34:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-02 12:34:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 199. [2024-11-02 12:34:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 155 states have (on average 1.761290322580645) internal successors, (273), 198 states have internal predecessors, (273), 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) [2024-11-02 12:34:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 273 transitions. [2024-11-02 12:34:12,923 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 273 transitions. Word has length 25 [2024-11-02 12:34:12,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:12,924 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 273 transitions. [2024-11-02 12:34:12,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 273 transitions. [2024-11-02 12:34:12,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 12:34:12,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:12,926 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, 1, 1] [2024-11-02 12:34:12,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-02 12:34:12,926 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:12,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:12,928 INFO L85 PathProgramCache]: Analyzing trace with hash 166727686, now seen corresponding path program 1 times [2024-11-02 12:34:12,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:12,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237416055] [2024-11-02 12:34:12,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:12,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:34:13,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:13,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237416055] [2024-11-02 12:34:13,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237416055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:13,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:13,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:34:13,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343752599] [2024-11-02 12:34:13,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:13,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:34:13,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:13,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:34:13,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:34:13,021 INFO L87 Difference]: Start difference. First operand 199 states and 273 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:13,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:13,244 INFO L93 Difference]: Finished difference Result 258 states and 354 transitions. [2024-11-02 12:34:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:34:13,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-02 12:34:13,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:13,246 INFO L225 Difference]: With dead ends: 258 [2024-11-02 12:34:13,246 INFO L226 Difference]: Without dead ends: 258 [2024-11-02 12:34:13,247 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 [2024-11-02 12:34:13,247 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 67 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:13,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 191 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-02 12:34:13,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 201. [2024-11-02 12:34:13,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 161 states have (on average 1.7453416149068324) internal successors, (281), 200 states have internal predecessors, (281), 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) [2024-11-02 12:34:13,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 281 transitions. [2024-11-02 12:34:13,253 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 281 transitions. Word has length 26 [2024-11-02 12:34:13,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:13,253 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 281 transitions. [2024-11-02 12:34:13,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:13,254 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 281 transitions. [2024-11-02 12:34:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 12:34:13,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:13,255 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, 1, 1] [2024-11-02 12:34:13,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-02 12:34:13,255 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:13,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:13,256 INFO L85 PathProgramCache]: Analyzing trace with hash 166727687, now seen corresponding path program 1 times [2024-11-02 12:34:13,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:13,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059226129] [2024-11-02 12:34:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:13,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:13,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:13,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059226129] [2024-11-02 12:34:13,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059226129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:13,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:13,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-02 12:34:13,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42988433] [2024-11-02 12:34:13,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:13,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-02 12:34:13,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:13,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-02 12:34:13,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:34:13,968 INFO L87 Difference]: Start difference. First operand 201 states and 281 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 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) [2024-11-02 12:34:14,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:14,932 INFO L93 Difference]: Finished difference Result 282 states and 357 transitions. [2024-11-02 12:34:14,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-02 12:34:14,934 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 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 26 [2024-11-02 12:34:14,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:14,935 INFO L225 Difference]: With dead ends: 282 [2024-11-02 12:34:14,935 INFO L226 Difference]: Without dead ends: 282 [2024-11-02 12:34:14,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2024-11-02 12:34:14,936 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 205 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:14,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 301 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 12:34:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-02 12:34:14,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 204. [2024-11-02 12:34:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 164 states have (on average 1.7378048780487805) internal successors, (285), 203 states have internal predecessors, (285), 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) [2024-11-02 12:34:14,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 285 transitions. [2024-11-02 12:34:14,943 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 285 transitions. Word has length 26 [2024-11-02 12:34:14,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:14,944 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 285 transitions. [2024-11-02 12:34:14,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 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) [2024-11-02 12:34:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 285 transitions. [2024-11-02 12:34:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-02 12:34:14,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:14,946 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, 1, 1, 1, 1, 1] [2024-11-02 12:34:14,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-02 12:34:14,946 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:14,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:14,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2004019505, now seen corresponding path program 1 times [2024-11-02 12:34:14,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:14,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854249082] [2024-11-02 12:34:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:14,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:34:14,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:14,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854249082] [2024-11-02 12:34:14,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854249082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:14,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:14,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:34:14,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434309987] [2024-11-02 12:34:14,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:14,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:34:14,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:14,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:34:14,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:34:14,999 INFO L87 Difference]: Start difference. First operand 204 states and 285 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:15,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:15,059 INFO L93 Difference]: Finished difference Result 205 states and 286 transitions. [2024-11-02 12:34:15,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:34:15,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-02 12:34:15,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:15,062 INFO L225 Difference]: With dead ends: 205 [2024-11-02 12:34:15,062 INFO L226 Difference]: Without dead ends: 205 [2024-11-02 12:34:15,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:34:15,063 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:15,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:15,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-02 12:34:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2024-11-02 12:34:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 165 states have (on average 1.7333333333333334) internal successors, (286), 204 states have internal predecessors, (286), 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) [2024-11-02 12:34:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 286 transitions. [2024-11-02 12:34:15,072 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 286 transitions. Word has length 29 [2024-11-02 12:34:15,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:15,072 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 286 transitions. [2024-11-02 12:34:15,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:15,073 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 286 transitions. [2024-11-02 12:34:15,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-02 12:34:15,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:15,073 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, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:15,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-02 12:34:15,074 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:15,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:15,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1994918567, now seen corresponding path program 1 times [2024-11-02 12:34:15,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:15,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461463774] [2024-11-02 12:34:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:15,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:15,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:15,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461463774] [2024-11-02 12:34:15,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461463774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:15,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:15,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 12:34:15,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187225160] [2024-11-02 12:34:15,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:15,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:34:15,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:15,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:34:15,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:34:15,466 INFO L87 Difference]: Start difference. First operand 205 states and 286 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2024-11-02 12:34:15,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:15,816 INFO L93 Difference]: Finished difference Result 285 states and 358 transitions. [2024-11-02 12:34:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:34:15,816 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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 30 [2024-11-02 12:34:15,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:15,818 INFO L225 Difference]: With dead ends: 285 [2024-11-02 12:34:15,818 INFO L226 Difference]: Without dead ends: 285 [2024-11-02 12:34:15,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:34:15,819 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 236 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:15,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 328 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:34:15,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-02 12:34:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 207. [2024-11-02 12:34:15,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 167 states have (on average 1.7305389221556886) internal successors, (289), 206 states have internal predecessors, (289), 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) [2024-11-02 12:34:15,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 289 transitions. [2024-11-02 12:34:15,826 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 289 transitions. Word has length 30 [2024-11-02 12:34:15,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:15,826 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 289 transitions. [2024-11-02 12:34:15,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2024-11-02 12:34:15,827 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 289 transitions. [2024-11-02 12:34:15,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-02 12:34:15,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:15,828 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, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:15,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-02 12:34:15,828 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-02 12:34:15,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:15,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1995071659, now seen corresponding path program 1 times [2024-11-02 12:34:15,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:15,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327199101] [2024-11-02 12:34:15,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:15,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:16,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:16,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327199101] [2024-11-02 12:34:16,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327199101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:16,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187173306] [2024-11-02 12:34:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:16,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:16,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:16,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:16,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4d21d0-e0d2-4d13-a848-f9b6f77b058e/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:34:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:16,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-02 12:34:16,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:16,864 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 [2024-11-02 12:34:16,942 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 11 [2024-11-02 12:34:17,031 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-02 12:34:17,031 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 [2024-11-02 12:34:17,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2024-11-02 12:34:17,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 28 [2024-11-02 12:34:17,247 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 [2024-11-02 12:34:17,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-02 12:34:17,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:34:17,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2024-11-02 12:34:17,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:34:17,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 38 [2024-11-02 12:34:17,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 27 [2024-11-02 12:34:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:17,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:18,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-11-02 12:34:18,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-02 12:34:19,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:34:19,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 39 [2024-11-02 12:34:19,537 INFO L349 Elim1Store]: treesize reduction 11, result has 60.7 percent of original size [2024-11-02 12:34:19,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 63 [2024-11-02 12:34:19,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-02 12:34:19,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:34:19,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-02 12:34:19,624 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-02 12:34:19,634 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:34:19,634 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 24 treesize of output 20 [2024-11-02 12:34:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:20,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187173306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:20,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1851815851] [2024-11-02 12:34:20,063 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-02 12:34:20,064 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:20,068 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:20,074 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:20,074 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:21,488 INFO L180 IcfgInterpreter]: Interpretation finished