./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5 --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 68b918b5051efa1a4363a7cd528e42e31cd4f687fef5116849d37b2131e9c46c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:57:48,364 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:57:48,479 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-21 18:57:48,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:57:48,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 18:57:48,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:57:48,531 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 18:57:48,531 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 18:57:48,532 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:57:48,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 18:57:48,538 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 18:57:48,539 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 18:57:48,540 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 18:57:48,542 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 18:57:48,542 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 18:57:48,543 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 18:57:48,543 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 18:57:48,544 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 18:57:48,544 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 18:57:48,545 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 18:57:48,545 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 18:57:48,546 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 18:57:48,547 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:57:48,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:57:48,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:57:48,549 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:57:48,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:57:48,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:57:48,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:57:48,551 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 18:57:48,552 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 18:57:48,553 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 18:57:48,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:57:48,553 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:57:48,553 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:57:48,554 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:57:48,554 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:57:48,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:57:48,555 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 18:57:48,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 18:57:48,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:57:48,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:57:48,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:57:48,556 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 18:57:48,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:57:48,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 18:57:48,558 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 18:57:48,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:57:48,558 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_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68b918b5051efa1a4363a7cd528e42e31cd4f687fef5116849d37b2131e9c46c [2023-11-21 18:57:48,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:57:48,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:57:48,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:57:48,885 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:57:48,886 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:57:48,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.i [2023-11-21 18:57:52,020 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:57:52,414 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:57:52,415 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.i [2023-11-21 18:57:52,442 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/data/f3ecc0322/fc8371da6cab4bce8185df0a2a51683b/FLAG817e3f9d6 [2023-11-21 18:57:52,457 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/data/f3ecc0322/fc8371da6cab4bce8185df0a2a51683b [2023-11-21 18:57:52,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:57:52,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:57:52,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:57:52,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:57:52,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:57:52,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:57:52" (1/1) ... [2023-11-21 18:57:52,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f349b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:52, skipping insertion in model container [2023-11-21 18:57:52,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:57:52" (1/1) ... [2023-11-21 18:57:52,561 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:57:53,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:57:53,172 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:57:53,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:57:53,322 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:57:53,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:53 WrapperNode [2023-11-21 18:57:53,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:57:53,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:57:53,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:57:53,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:57:53,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:53" (1/1) ... [2023-11-21 18:57:53,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:53" (1/1) ... [2023-11-21 18:57:53,379 INFO L138 Inliner]: procedures = 369, calls = 31, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 85 [2023-11-21 18:57:53,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:57:53,381 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:57:53,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:57:53,381 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:57:53,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:53" (1/1) ... [2023-11-21 18:57:53,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:53" (1/1) ... [2023-11-21 18:57:53,395 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:53" (1/1) ... [2023-11-21 18:57:53,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:53" (1/1) ... [2023-11-21 18:57:53,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:53" (1/1) ... [2023-11-21 18:57:53,407 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:53" (1/1) ... [2023-11-21 18:57:53,409 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:53" (1/1) ... [2023-11-21 18:57:53,411 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:53" (1/1) ... [2023-11-21 18:57:53,421 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:57:53,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:57:53,422 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:57:53,422 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:57:53,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:53" (1/1) ... [2023-11-21 18:57:53,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:57:53,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:57:53,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 18:57:53,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 18:57:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:57:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 18:57:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:57:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 18:57:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 18:57:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 18:57:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 18:57:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 18:57:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:57:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 18:57:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 18:57:53,516 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 18:57:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:57:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:57:53,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:57:53,518 WARN L212 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 18:57:53,728 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:57:53,730 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:57:54,121 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:57:54,365 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:57:54,366 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:57:54,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:54 BoogieIcfgContainer [2023-11-21 18:57:54,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:57:54,370 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 18:57:54,371 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 18:57:54,374 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 18:57:54,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 06:57:52" (1/3) ... [2023-11-21 18:57:54,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f126b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:54, skipping insertion in model container [2023-11-21 18:57:54,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:53" (2/3) ... [2023-11-21 18:57:54,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f126b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:54, skipping insertion in model container [2023-11-21 18:57:54,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:54" (3/3) ... [2023-11-21 18:57:54,384 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_02-list_nr.i [2023-11-21 18:57:54,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 18:57:54,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2023-11-21 18:57:54,406 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 18:57:54,482 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 18:57:54,523 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 54 transitions, 112 flow [2023-11-21 18:57:54,573 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 311 states, 234 states have (on average 2.423076923076923) internal successors, (567), 310 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:54,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 18:57:54,598 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18f5c04f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 18:57:54,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-21 18:57:54,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 311 states, 234 states have (on average 2.423076923076923) internal successors, (567), 310 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:54,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 18:57:54,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:54,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 18:57:54,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:57:54,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:54,615 INFO L85 PathProgramCache]: Analyzing trace with hash 8397, now seen corresponding path program 1 times [2023-11-21 18:57:54,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:54,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110159292] [2023-11-21 18:57:54,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:54,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:55,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:55,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:57:55,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110159292] [2023-11-21 18:57:55,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110159292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:55,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:55,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 18:57:55,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358394950] [2023-11-21 18:57:55,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:55,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 18:57:55,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:57:55,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 18:57:55,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:57:55,158 INFO L87 Difference]: Start difference. First operand has 311 states, 234 states have (on average 2.423076923076923) internal successors, (567), 310 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:55,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:55,328 INFO L93 Difference]: Finished difference Result 307 states and 563 transitions. [2023-11-21 18:57:55,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 18:57:55,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-21 18:57:55,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:55,359 INFO L225 Difference]: With dead ends: 307 [2023-11-21 18:57:55,359 INFO L226 Difference]: Without dead ends: 307 [2023-11-21 18:57:55,361 INFO L412 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 [2023-11-21 18:57:55,370 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:55,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 18:57:55,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-21 18:57:55,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2023-11-21 18:57:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 234 states have (on average 2.405982905982906) internal successors, (563), 306 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:55,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 563 transitions. [2023-11-21 18:57:55,438 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 563 transitions. Word has length 2 [2023-11-21 18:57:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:55,438 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 563 transitions. [2023-11-21 18:57:55,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 563 transitions. [2023-11-21 18:57:55,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 18:57:55,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:55,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 18:57:55,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 18:57:55,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:57:55,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash 8398, now seen corresponding path program 1 times [2023-11-21 18:57:55,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:55,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811709453] [2023-11-21 18:57:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:55,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:55,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:57:55,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811709453] [2023-11-21 18:57:55,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811709453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:55,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:55,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 18:57:55,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365202714] [2023-11-21 18:57:55,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:55,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 18:57:55,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:57:55,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 18:57:55,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:57:55,683 INFO L87 Difference]: Start difference. First operand 307 states and 563 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:55,814 INFO L93 Difference]: Finished difference Result 303 states and 559 transitions. [2023-11-21 18:57:55,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 18:57:55,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-21 18:57:55,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:55,818 INFO L225 Difference]: With dead ends: 303 [2023-11-21 18:57:55,818 INFO L226 Difference]: Without dead ends: 303 [2023-11-21 18:57:55,818 INFO L412 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 [2023-11-21 18:57:55,820 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:55,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 37 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 18:57:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-21 18:57:55,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2023-11-21 18:57:55,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 234 states have (on average 2.388888888888889) internal successors, (559), 302 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:55,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 559 transitions. [2023-11-21 18:57:55,849 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 559 transitions. Word has length 2 [2023-11-21 18:57:55,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:55,849 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 559 transitions. [2023-11-21 18:57:55,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:55,850 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 559 transitions. [2023-11-21 18:57:55,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 18:57:55,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:55,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 18:57:55,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 18:57:55,851 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:57:55,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:55,852 INFO L85 PathProgramCache]: Analyzing trace with hash -828447689, now seen corresponding path program 1 times [2023-11-21 18:57:55,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:55,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060621862] [2023-11-21 18:57:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:55,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:55,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:57:55,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060621862] [2023-11-21 18:57:55,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060621862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:55,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:55,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 18:57:55,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61500787] [2023-11-21 18:57:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:55,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 18:57:55,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:57:55,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 18:57:55,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 18:57:55,970 INFO L87 Difference]: Start difference. First operand 303 states and 559 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:56,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:56,090 INFO L93 Difference]: Finished difference Result 282 states and 508 transitions. [2023-11-21 18:57:56,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 18:57:56,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 18:57:56,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:56,111 INFO L225 Difference]: With dead ends: 282 [2023-11-21 18:57:56,111 INFO L226 Difference]: Without dead ends: 282 [2023-11-21 18:57:56,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 18:57:56,113 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:56,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 23 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 18:57:56,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-21 18:57:56,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 264. [2023-11-21 18:57:56,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 213 states have (on average 2.276995305164319) internal successors, (485), 263 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 485 transitions. [2023-11-21 18:57:56,130 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 485 transitions. Word has length 6 [2023-11-21 18:57:56,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:56,130 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 485 transitions. [2023-11-21 18:57:56,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 485 transitions. [2023-11-21 18:57:56,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 18:57:56,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:56,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 18:57:56,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 18:57:56,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:57:56,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:56,133 INFO L85 PathProgramCache]: Analyzing trace with hash -828447688, now seen corresponding path program 1 times [2023-11-21 18:57:56,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:56,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017791709] [2023-11-21 18:57:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:56,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:57:56,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017791709] [2023-11-21 18:57:56,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017791709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:56,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:56,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:57:56,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927404264] [2023-11-21 18:57:56,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:56,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 18:57:56,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:57:56,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 18:57:56,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:57:56,335 INFO L87 Difference]: Start difference. First operand 264 states and 485 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:56,401 INFO L93 Difference]: Finished difference Result 220 states and 398 transitions. [2023-11-21 18:57:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 18:57:56,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 18:57:56,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:56,404 INFO L225 Difference]: With dead ends: 220 [2023-11-21 18:57:56,405 INFO L226 Difference]: Without dead ends: 220 [2023-11-21 18:57:56,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:57:56,406 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:56,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 9 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 18:57:56,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-21 18:57:56,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2023-11-21 18:57:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 187 states have (on average 2.128342245989305) internal successors, (398), 219 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 398 transitions. [2023-11-21 18:57:56,417 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 398 transitions. Word has length 6 [2023-11-21 18:57:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:56,418 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 398 transitions. [2023-11-21 18:57:56,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 398 transitions. [2023-11-21 18:57:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 18:57:56,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:56,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:56,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 18:57:56,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:57:56,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:56,428 INFO L85 PathProgramCache]: Analyzing trace with hash 87925701, now seen corresponding path program 1 times [2023-11-21 18:57:56,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:56,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755566144] [2023-11-21 18:57:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:56,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:56,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:57:56,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755566144] [2023-11-21 18:57:56,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755566144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:56,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:56,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 18:57:56,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104851961] [2023-11-21 18:57:56,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:56,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 18:57:56,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:57:56,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 18:57:56,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 18:57:56,709 INFO L87 Difference]: Start difference. First operand 220 states and 398 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:56,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:56,820 INFO L93 Difference]: Finished difference Result 219 states and 397 transitions. [2023-11-21 18:57:56,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 18:57:56,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-11-21 18:57:56,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:56,823 INFO L225 Difference]: With dead ends: 219 [2023-11-21 18:57:56,823 INFO L226 Difference]: Without dead ends: 219 [2023-11-21 18:57:56,823 INFO L412 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 [2023-11-21 18:57:56,824 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 63 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:56,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 17 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 18:57:56,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-21 18:57:56,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-11-21 18:57:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 187 states have (on average 2.122994652406417) internal successors, (397), 218 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 397 transitions. [2023-11-21 18:57:56,834 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 397 transitions. Word has length 7 [2023-11-21 18:57:56,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:56,834 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 397 transitions. [2023-11-21 18:57:56,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 397 transitions. [2023-11-21 18:57:56,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 18:57:56,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:56,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:56,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 18:57:56,836 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:57:56,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash 87925702, now seen corresponding path program 1 times [2023-11-21 18:57:56,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:56,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898317493] [2023-11-21 18:57:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:56,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:57,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:57:57,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898317493] [2023-11-21 18:57:57,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898317493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:57,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:57,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 18:57:57,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066658379] [2023-11-21 18:57:57,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:57,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 18:57:57,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:57:57,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 18:57:57,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 18:57:57,098 INFO L87 Difference]: Start difference. First operand 219 states and 397 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:57,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:57,240 INFO L93 Difference]: Finished difference Result 218 states and 396 transitions. [2023-11-21 18:57:57,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 18:57:57,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-11-21 18:57:57,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:57,243 INFO L225 Difference]: With dead ends: 218 [2023-11-21 18:57:57,244 INFO L226 Difference]: Without dead ends: 218 [2023-11-21 18:57:57,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-21 18:57:57,248 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 85 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:57,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 23 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 18:57:57,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-21 18:57:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2023-11-21 18:57:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 187 states have (on average 2.1176470588235294) internal successors, (396), 217 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 396 transitions. [2023-11-21 18:57:57,259 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 396 transitions. Word has length 7 [2023-11-21 18:57:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:57,259 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 396 transitions. [2023-11-21 18:57:57,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 396 transitions. [2023-11-21 18:57:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 18:57:57,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:57,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:57,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 18:57:57,261 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:57:57,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:57,262 INFO L85 PathProgramCache]: Analyzing trace with hash -535238532, now seen corresponding path program 1 times [2023-11-21 18:57:57,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:57,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101722636] [2023-11-21 18:57:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:57,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:57,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:57:57,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101722636] [2023-11-21 18:57:57,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101722636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:57,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:57,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:57:57,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552378338] [2023-11-21 18:57:57,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:57,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 18:57:57,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:57:57,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 18:57:57,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:57:57,384 INFO L87 Difference]: Start difference. First operand 218 states and 396 transitions. Second operand has 3 states, 2 states have (on average 5.0) 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) [2023-11-21 18:57:57,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:57,475 INFO L93 Difference]: Finished difference Result 212 states and 380 transitions. [2023-11-21 18:57:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 18:57:57,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) 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 [2023-11-21 18:57:57,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:57,478 INFO L225 Difference]: With dead ends: 212 [2023-11-21 18:57:57,478 INFO L226 Difference]: Without dead ends: 212 [2023-11-21 18:57:57,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:57:57,481 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:57,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 18:57:57,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-21 18:57:57,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 206. [2023-11-21 18:57:57,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 179 states have (on average 2.100558659217877) internal successors, (376), 205 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 376 transitions. [2023-11-21 18:57:57,490 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 376 transitions. Word has length 10 [2023-11-21 18:57:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:57,491 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 376 transitions. [2023-11-21 18:57:57,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) 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) [2023-11-21 18:57:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 376 transitions. [2023-11-21 18:57:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 18:57:57,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:57,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:57,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 18:57:57,493 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:57:57,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash -535238531, now seen corresponding path program 1 times [2023-11-21 18:57:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:57,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663378216] [2023-11-21 18:57:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:57,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:57,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:57:57,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663378216] [2023-11-21 18:57:57,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663378216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:57,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:57,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:57:57,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227308255] [2023-11-21 18:57:57,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:57,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 18:57:57,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:57:57,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 18:57:57,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:57:57,675 INFO L87 Difference]: Start difference. First operand 206 states and 376 transitions. Second operand has 3 states, 2 states have (on average 5.0) 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) [2023-11-21 18:57:57,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:57,755 INFO L93 Difference]: Finished difference Result 182 states and 324 transitions. [2023-11-21 18:57:57,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 18:57:57,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) 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 [2023-11-21 18:57:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:57,758 INFO L225 Difference]: With dead ends: 182 [2023-11-21 18:57:57,758 INFO L226 Difference]: Without dead ends: 182 [2023-11-21 18:57:57,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:57:57,760 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:57,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 18:57:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-21 18:57:57,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-11-21 18:57:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 163 states have (on average 1.9877300613496933) internal successors, (324), 181 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 324 transitions. [2023-11-21 18:57:57,769 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 324 transitions. Word has length 10 [2023-11-21 18:57:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:57,769 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 324 transitions. [2023-11-21 18:57:57,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) 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) [2023-11-21 18:57:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 324 transitions. [2023-11-21 18:57:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 18:57:57,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:57,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:57,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 18:57:57,771 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:57:57,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:57,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1883221382, now seen corresponding path program 1 times [2023-11-21 18:57:57,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:57,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399647662] [2023-11-21 18:57:57,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:57,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:58,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:57:58,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399647662] [2023-11-21 18:57:58,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399647662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:58,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:58,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 18:57:58,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462337380] [2023-11-21 18:57:58,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:58,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 18:57:58,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:57:58,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 18:57:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-21 18:57:58,299 INFO L87 Difference]: Start difference. First operand 182 states and 324 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2023-11-21 18:57:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:58,574 INFO L93 Difference]: Finished difference Result 224 states and 404 transitions. [2023-11-21 18:57:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 18:57:58,575 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 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 [2023-11-21 18:57:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:58,578 INFO L225 Difference]: With dead ends: 224 [2023-11-21 18:57:58,578 INFO L226 Difference]: Without dead ends: 224 [2023-11-21 18:57:58,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-21 18:57:58,579 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 74 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:58,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 31 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 18:57:58,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-21 18:57:58,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 191. [2023-11-21 18:57:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 172 states have (on average 2.046511627906977) internal successors, (352), 190 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:58,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 352 transitions. [2023-11-21 18:57:58,588 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 352 transitions. Word has length 13 [2023-11-21 18:57:58,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:58,588 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 352 transitions. [2023-11-21 18:57:58,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2023-11-21 18:57:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 352 transitions. [2023-11-21 18:57:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 18:57:58,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:58,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:58,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 18:57:58,590 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:57:58,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1883221383, now seen corresponding path program 1 times [2023-11-21 18:57:58,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:58,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078623446] [2023-11-21 18:57:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:58,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:58,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:57:58,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078623446] [2023-11-21 18:57:58,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078623446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:58,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:58,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 18:57:58,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987557672] [2023-11-21 18:57:58,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:58,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 18:57:58,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:57:58,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 18:57:58,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-21 18:57:58,981 INFO L87 Difference]: Start difference. First operand 191 states and 352 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2023-11-21 18:57:59,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:59,198 INFO L93 Difference]: Finished difference Result 241 states and 434 transitions. [2023-11-21 18:57:59,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 18:57:59,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 [2023-11-21 18:57:59,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:59,202 INFO L225 Difference]: With dead ends: 241 [2023-11-21 18:57:59,202 INFO L226 Difference]: Without dead ends: 241 [2023-11-21 18:57:59,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-21 18:57:59,203 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 106 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:59,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 42 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 18:57:59,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-11-21 18:57:59,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 189. [2023-11-21 18:57:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 170 states have (on average 1.9823529411764707) internal successors, (337), 188 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 337 transitions. [2023-11-21 18:57:59,212 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 337 transitions. Word has length 13 [2023-11-21 18:57:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:59,213 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 337 transitions. [2023-11-21 18:57:59,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2023-11-21 18:57:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 337 transitions. [2023-11-21 18:57:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 18:57:59,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:59,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:59,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 18:57:59,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:57:59,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:59,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1594728487, now seen corresponding path program 1 times [2023-11-21 18:57:59,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:59,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831805723] [2023-11-21 18:57:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:59,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:57:59,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:57:59,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831805723] [2023-11-21 18:57:59,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831805723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:59,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:59,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 18:57:59,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781333257] [2023-11-21 18:57:59,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:59,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 18:57:59,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:57:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 18:57:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-21 18:57:59,893 INFO L87 Difference]: Start difference. First operand 189 states and 337 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:00,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:00,190 INFO L93 Difference]: Finished difference Result 208 states and 371 transitions. [2023-11-21 18:58:00,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 18:58:00,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-21 18:58:00,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:00,193 INFO L225 Difference]: With dead ends: 208 [2023-11-21 18:58:00,193 INFO L226 Difference]: Without dead ends: 208 [2023-11-21 18:58:00,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-21 18:58:00,194 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 81 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:00,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 31 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 18:58:00,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-21 18:58:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 190. [2023-11-21 18:58:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 171 states have (on average 2.0116959064327484) internal successors, (344), 189 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 344 transitions. [2023-11-21 18:58:00,203 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 344 transitions. Word has length 15 [2023-11-21 18:58:00,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:00,203 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 344 transitions. [2023-11-21 18:58:00,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:00,204 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 344 transitions. [2023-11-21 18:58:00,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 18:58:00,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:00,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:00,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 18:58:00,205 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:00,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1594728488, now seen corresponding path program 1 times [2023-11-21 18:58:00,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:58:00,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312463355] [2023-11-21 18:58:00,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:00,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:58:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:58:00,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:58:00,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312463355] [2023-11-21 18:58:00,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312463355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:00,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:00,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 18:58:00,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90926598] [2023-11-21 18:58:00,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:00,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 18:58:00,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:58:00,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 18:58:00,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-21 18:58:00,974 INFO L87 Difference]: Start difference. First operand 190 states and 344 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:01,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:01,452 INFO L93 Difference]: Finished difference Result 227 states and 399 transitions. [2023-11-21 18:58:01,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 18:58:01,453 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-21 18:58:01,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:01,454 INFO L225 Difference]: With dead ends: 227 [2023-11-21 18:58:01,455 INFO L226 Difference]: Without dead ends: 227 [2023-11-21 18:58:01,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-11-21 18:58:01,456 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 137 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:01,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 30 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 18:58:01,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-11-21 18:58:01,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 174. [2023-11-21 18:58:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 155 states have (on average 1.9806451612903226) internal successors, (307), 173 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:01,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 307 transitions. [2023-11-21 18:58:01,464 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 307 transitions. Word has length 15 [2023-11-21 18:58:01,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:01,464 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 307 transitions. [2023-11-21 18:58:01,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:01,465 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 307 transitions. [2023-11-21 18:58:01,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 18:58:01,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:01,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:01,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 18:58:01,467 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:01,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:01,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2109284427, now seen corresponding path program 1 times [2023-11-21 18:58:01,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:58:01,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431714632] [2023-11-21 18:58:01,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:01,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:58:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:58:01,499 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:58:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:58:01,546 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 18:58:01,547 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 18:58:01,548 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (37 of 38 remaining) [2023-11-21 18:58:01,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 38 remaining) [2023-11-21 18:58:01,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 38 remaining) [2023-11-21 18:58:01,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 38 remaining) [2023-11-21 18:58:01,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 38 remaining) [2023-11-21 18:58:01,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 38 remaining) [2023-11-21 18:58:01,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 38 remaining) [2023-11-21 18:58:01,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 38 remaining) [2023-11-21 18:58:01,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 38 remaining) [2023-11-21 18:58:01,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 38 remaining) [2023-11-21 18:58:01,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 38 remaining) [2023-11-21 18:58:01,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 38 remaining) [2023-11-21 18:58:01,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 38 remaining) [2023-11-21 18:58:01,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 38 remaining) [2023-11-21 18:58:01,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 38 remaining) [2023-11-21 18:58:01,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 38 remaining) [2023-11-21 18:58:01,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 38 remaining) [2023-11-21 18:58:01,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 38 remaining) [2023-11-21 18:58:01,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 38 remaining) [2023-11-21 18:58:01,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 38 remaining) [2023-11-21 18:58:01,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 38 remaining) [2023-11-21 18:58:01,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 38 remaining) [2023-11-21 18:58:01,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 38 remaining) [2023-11-21 18:58:01,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 38 remaining) [2023-11-21 18:58:01,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 38 remaining) [2023-11-21 18:58:01,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 38 remaining) [2023-11-21 18:58:01,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 38 remaining) [2023-11-21 18:58:01,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 38 remaining) [2023-11-21 18:58:01,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 38 remaining) [2023-11-21 18:58:01,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 38 remaining) [2023-11-21 18:58:01,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 38 remaining) [2023-11-21 18:58:01,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 38 remaining) [2023-11-21 18:58:01,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 38 remaining) [2023-11-21 18:58:01,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 38 remaining) [2023-11-21 18:58:01,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 38 remaining) [2023-11-21 18:58:01,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 38 remaining) [2023-11-21 18:58:01,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 38 remaining) [2023-11-21 18:58:01,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 38 remaining) [2023-11-21 18:58:01,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 18:58:01,562 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:01,567 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 18:58:01,567 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 18:58:01,591 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner [2023-11-21 18:58:01,592 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers [2023-11-21 18:58:01,592 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind [2023-11-21 18:58:01,593 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count [2023-11-21 18:58:01,593 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock [2023-11-21 18:58:01,593 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner [2023-11-21 18:58:01,594 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers [2023-11-21 18:58:01,594 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind [2023-11-21 18:58:01,594 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count [2023-11-21 18:58:01,594 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock [2023-11-21 18:58:01,595 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner [2023-11-21 18:58:01,595 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers [2023-11-21 18:58:01,595 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre36 could not be translated [2023-11-21 18:58:01,595 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind [2023-11-21 18:58:01,596 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count [2023-11-21 18:58:01,596 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock [2023-11-21 18:58:01,596 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner [2023-11-21 18:58:01,596 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers [2023-11-21 18:58:01,597 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind [2023-11-21 18:58:01,597 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count [2023-11-21 18:58:01,597 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock [2023-11-21 18:58:01,597 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner [2023-11-21 18:58:01,598 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers [2023-11-21 18:58:01,598 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind [2023-11-21 18:58:01,598 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count [2023-11-21 18:58:01,598 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock [2023-11-21 18:58:01,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 06:58:01 BasicIcfg [2023-11-21 18:58:01,605 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 18:58:01,605 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:58:01,605 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:58:01,606 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:58:01,606 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:54" (3/4) ... [2023-11-21 18:58:01,608 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:58:01,609 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:58:01,610 INFO L158 Benchmark]: Toolchain (without parser) took 9148.64ms. Allocated memory was 138.4MB in the beginning and 260.0MB in the end (delta: 121.6MB). Free memory was 73.5MB in the beginning and 87.5MB in the end (delta: -14.0MB). Peak memory consumption was 109.4MB. Max. memory is 16.1GB. [2023-11-21 18:58:01,610 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 138.4MB. Free memory was 110.2MB in the beginning and 110.2MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:58:01,611 INFO L158 Benchmark]: CACSL2BoogieTranslator took 860.02ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 73.3MB in the beginning and 110.8MB in the end (delta: -37.5MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2023-11-21 18:58:01,611 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.51ms. Allocated memory is still 176.2MB. Free memory was 110.8MB in the beginning and 108.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:58:01,611 INFO L158 Benchmark]: Boogie Preprocessor took 40.44ms. Allocated memory is still 176.2MB. Free memory was 107.9MB in the beginning and 106.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:58:01,612 INFO L158 Benchmark]: RCFGBuilder took 946.00ms. Allocated memory is still 176.2MB. Free memory was 106.3MB in the beginning and 128.7MB in the end (delta: -22.5MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2023-11-21 18:58:01,612 INFO L158 Benchmark]: TraceAbstraction took 7234.41ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 128.6MB in the beginning and 87.5MB in the end (delta: 41.1MB). Peak memory consumption was 125.0MB. Max. memory is 16.1GB. [2023-11-21 18:58:01,612 INFO L158 Benchmark]: Witness Printer took 3.93ms. Allocated memory is still 260.0MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:58:01,614 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 138.4MB. Free memory was 110.2MB in the beginning and 110.2MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 860.02ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 73.3MB in the beginning and 110.8MB in the end (delta: -37.5MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.51ms. Allocated memory is still 176.2MB. Free memory was 110.8MB in the beginning and 108.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.44ms. Allocated memory is still 176.2MB. Free memory was 107.9MB in the beginning and 106.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 946.00ms. Allocated memory is still 176.2MB. Free memory was 106.3MB in the beginning and 128.7MB in the end (delta: -22.5MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7234.41ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 128.6MB in the beginning and 87.5MB in the end (delta: 41.1MB). Peak memory consumption was 125.0MB. Max. memory is 16.1GB. * Witness Printer took 3.93ms. Allocated memory is still 260.0MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre36 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1244]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1244. Possible FailurePath: [L1223-L1226] 0 struct s { int datum; struct s *next; } *A; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1245] 0 pthread_t t1; [L1246] 0 struct s *p = malloc(sizeof(struct s)); [L1247] CALL 0 init(p,9) [L1228] 0 p -> datum = x VAL [A={0:0}, A_mutex={1:0}, \old(x)=9, p={-1:0}, p={-1:0}, x=9] [L1229] 0 p -> next = ((void *)0) [L1247] RET 0 init(p,9) [L1248] 0 A = malloc(sizeof(struct s)) [L1249] CALL 0 init(A,3) [L1228] 0 p -> datum = x VAL [A={5:0}, A_mutex={1:0}, \old(x)=3, p={5:0}, p={5:0}, x=3] [L1229] 0 p -> next = ((void *)0) [L1249] RET 0 init(A,3) [L1250] 0 A->next = p [L1251] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={5:0}, A_mutex={1:0}, p={-1:0}, t1={7:0}] [L1253] EXPR 0 A->next [L1253] 0 p = A->next [L1254] 0 p->datum VAL [A={5:0}, A_mutex={1:0}, p={-1:0}, t1={7:0}] [L1256] 0 return 0; [L1256] 0 return 0; VAL [A={5:0}, A_mutex={1:0}, \result=0, p={-1:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1251]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 77 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 648 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 648 mSDsluCounter, 325 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 166 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1287 IncrementalHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 159 mSDtfsCounter, 1287 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=311occurred in iteration=0, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 180 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 1243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:58:01,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5 --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 68b918b5051efa1a4363a7cd528e42e31cd4f687fef5116849d37b2131e9c46c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:58:04,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:58:04,476 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-21 18:58:04,484 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:58:04,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 18:58:04,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:58:04,529 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 18:58:04,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 18:58:04,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:58:04,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 18:58:04,536 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 18:58:04,536 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 18:58:04,537 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 18:58:04,538 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 18:58:04,539 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 18:58:04,539 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 18:58:04,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:58:04,540 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:58:04,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:58:04,542 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:58:04,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:58:04,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:58:04,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:58:04,544 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 18:58:04,545 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 18:58:04,545 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 18:58:04,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:58:04,546 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:58:04,546 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:58:04,547 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:58:04,548 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:58:04,548 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:58:04,549 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:58:04,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:58:04,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 18:58:04,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 18:58:04,550 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 18:58:04,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:58:04,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:58:04,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:58:04,551 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:58:04,552 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:58:04,552 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 18:58:04,552 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 18:58:04,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:58:04,553 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68b918b5051efa1a4363a7cd528e42e31cd4f687fef5116849d37b2131e9c46c [2023-11-21 18:58:04,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:58:05,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:58:05,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:58:05,021 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:58:05,021 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:58:05,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.i [2023-11-21 18:58:08,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:58:08,642 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:58:08,643 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.i [2023-11-21 18:58:08,674 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/data/832c33bd1/c9b0d8b2f0104a708a50a89a5d50d042/FLAG3f9bf96af [2023-11-21 18:58:08,699 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/data/832c33bd1/c9b0d8b2f0104a708a50a89a5d50d042 [2023-11-21 18:58:08,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:58:08,703 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:58:08,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:58:08,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:58:08,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:58:08,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:58:08" (1/1) ... [2023-11-21 18:58:08,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461c10a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:08, skipping insertion in model container [2023-11-21 18:58:08,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:58:08" (1/1) ... [2023-11-21 18:58:08,780 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:58:09,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:58:09,419 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:58:09,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:58:09,636 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:58:09,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:09 WrapperNode [2023-11-21 18:58:09,637 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:58:09,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:58:09,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:58:09,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:58:09,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:09" (1/1) ... [2023-11-21 18:58:09,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:09" (1/1) ... [2023-11-21 18:58:09,743 INFO L138 Inliner]: procedures = 370, calls = 31, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 86 [2023-11-21 18:58:09,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:58:09,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:58:09,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:58:09,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:58:09,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:09" (1/1) ... [2023-11-21 18:58:09,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:09" (1/1) ... [2023-11-21 18:58:09,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:09" (1/1) ... [2023-11-21 18:58:09,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:09" (1/1) ... [2023-11-21 18:58:09,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:09" (1/1) ... [2023-11-21 18:58:09,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:09" (1/1) ... [2023-11-21 18:58:09,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:09" (1/1) ... [2023-11-21 18:58:09,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:09" (1/1) ... [2023-11-21 18:58:09,811 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:58:09,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:58:09,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:58:09,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:58:09,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:09" (1/1) ... [2023-11-21 18:58:09,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:58:09,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:58:09,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 18:58:09,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 18:58:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 18:58:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:58:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 18:58:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:58:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 18:58:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-21 18:58:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 18:58:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 18:58:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 18:58:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:58:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 18:58:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 18:58:09,913 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 18:58:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:58:09,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:58:09,915 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 18:58:10,183 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:58:10,185 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:58:10,699 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:58:10,940 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:58:10,941 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:58:10,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:58:10 BoogieIcfgContainer [2023-11-21 18:58:10,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:58:10,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 18:58:10,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 18:58:10,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 18:58:10,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 06:58:08" (1/3) ... [2023-11-21 18:58:10,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7b59f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:58:10, skipping insertion in model container [2023-11-21 18:58:10,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:58:09" (2/3) ... [2023-11-21 18:58:10,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7b59f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:58:10, skipping insertion in model container [2023-11-21 18:58:10,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:58:10" (3/3) ... [2023-11-21 18:58:10,958 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_02-list_nr.i [2023-11-21 18:58:10,979 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 18:58:10,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2023-11-21 18:58:10,980 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 18:58:11,063 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 18:58:11,103 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 54 transitions, 112 flow [2023-11-21 18:58:11,159 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 311 states, 234 states have (on average 2.423076923076923) internal successors, (567), 310 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:11,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 18:58:11,186 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@77c842bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 18:58:11,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-21 18:58:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 311 states, 234 states have (on average 2.423076923076923) internal successors, (567), 310 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 18:58:11,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:11,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 18:58:11,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:11,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:11,206 INFO L85 PathProgramCache]: Analyzing trace with hash 8461, now seen corresponding path program 1 times [2023-11-21 18:58:11,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:11,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947886139] [2023-11-21 18:58:11,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:11,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:11,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:11,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 18:58:11,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 18:58:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:11,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 18:58:11,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:11,476 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 7 [2023-11-21 18:58:11,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 18:58:11,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 18:58:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:58:11,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:11,510 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:11,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947886139] [2023-11-21 18:58:11,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947886139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:11,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:11,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 18:58:11,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214915001] [2023-11-21 18:58:11,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:11,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 18:58:11,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:11,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 18:58:11,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:58:11,557 INFO L87 Difference]: Start difference. First operand has 311 states, 234 states have (on average 2.423076923076923) internal successors, (567), 310 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:11,817 INFO L93 Difference]: Finished difference Result 307 states and 563 transitions. [2023-11-21 18:58:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 18:58:11,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-21 18:58:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:11,833 INFO L225 Difference]: With dead ends: 307 [2023-11-21 18:58:11,833 INFO L226 Difference]: Without dead ends: 307 [2023-11-21 18:58:11,835 INFO L412 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 [2023-11-21 18:58:11,839 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:11,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 18:58:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-21 18:58:11,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2023-11-21 18:58:11,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 234 states have (on average 2.405982905982906) internal successors, (563), 306 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:11,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 563 transitions. [2023-11-21 18:58:11,900 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 563 transitions. Word has length 2 [2023-11-21 18:58:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:11,900 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 563 transitions. [2023-11-21 18:58:11,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:11,901 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 563 transitions. [2023-11-21 18:58:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 18:58:11,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:11,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 18:58:11,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 18:58:12,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:12,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:12,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:12,106 INFO L85 PathProgramCache]: Analyzing trace with hash 8462, now seen corresponding path program 1 times [2023-11-21 18:58:12,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:12,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345505534] [2023-11-21 18:58:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:12,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:12,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:12,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 18:58:12,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 18:58:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:12,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 18:58:12,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:12,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2023-11-21 18:58:12,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 18:58:12,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 1 [2023-11-21 18:58:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:58:12,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:12,294 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:12,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345505534] [2023-11-21 18:58:12,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345505534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:12,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:12,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 18:58:12,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825971587] [2023-11-21 18:58:12,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:12,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 18:58:12,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:12,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 18:58:12,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:58:12,300 INFO L87 Difference]: Start difference. First operand 307 states and 563 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:12,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:12,558 INFO L93 Difference]: Finished difference Result 303 states and 559 transitions. [2023-11-21 18:58:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 18:58:12,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-21 18:58:12,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:12,563 INFO L225 Difference]: With dead ends: 303 [2023-11-21 18:58:12,563 INFO L226 Difference]: Without dead ends: 303 [2023-11-21 18:58:12,563 INFO L412 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 [2023-11-21 18:58:12,564 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:12,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 37 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 18:58:12,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-21 18:58:12,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2023-11-21 18:58:12,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 234 states have (on average 2.388888888888889) internal successors, (559), 302 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:12,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 559 transitions. [2023-11-21 18:58:12,601 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 559 transitions. Word has length 2 [2023-11-21 18:58:12,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:12,602 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 559 transitions. [2023-11-21 18:58:12,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:12,605 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 559 transitions. [2023-11-21 18:58:12,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 18:58:12,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:12,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 18:58:12,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 18:58:12,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:12,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:12,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:12,813 INFO L85 PathProgramCache]: Analyzing trace with hash -769280777, now seen corresponding path program 1 times [2023-11-21 18:58:12,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:12,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254251970] [2023-11-21 18:58:12,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:12,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:12,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:12,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 18:58:12,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 18:58:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:12,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 18:58:12,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:12,996 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 7 [2023-11-21 18:58:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:58:13,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:13,018 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:13,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254251970] [2023-11-21 18:58:13,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254251970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:13,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:13,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:58:13,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683383428] [2023-11-21 18:58:13,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:13,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 18:58:13,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:13,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 18:58:13,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:58:13,021 INFO L87 Difference]: Start difference. First operand 303 states and 559 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:13,287 INFO L93 Difference]: Finished difference Result 282 states and 508 transitions. [2023-11-21 18:58:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 18:58:13,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 18:58:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:13,290 INFO L225 Difference]: With dead ends: 282 [2023-11-21 18:58:13,290 INFO L226 Difference]: Without dead ends: 282 [2023-11-21 18:58:13,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:58:13,292 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:13,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 15 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 18:58:13,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-21 18:58:13,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 264. [2023-11-21 18:58:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 213 states have (on average 2.276995305164319) internal successors, (485), 263 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 485 transitions. [2023-11-21 18:58:13,308 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 485 transitions. Word has length 6 [2023-11-21 18:58:13,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:13,309 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 485 transitions. [2023-11-21 18:58:13,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:13,309 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 485 transitions. [2023-11-21 18:58:13,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 18:58:13,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:13,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 18:58:13,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-21 18:58:13,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:13,514 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:13,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:13,514 INFO L85 PathProgramCache]: Analyzing trace with hash -769280776, now seen corresponding path program 1 times [2023-11-21 18:58:13,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:13,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043968717] [2023-11-21 18:58:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:13,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:13,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:13,517 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 18:58:13,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-21 18:58:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:13,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 18:58:13,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:13,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 18:58:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:58:13,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:13,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:13,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043968717] [2023-11-21 18:58:13,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043968717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:13,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:13,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:58:13,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13555970] [2023-11-21 18:58:13,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:13,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 18:58:13,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:13,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 18:58:13,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:58:13,700 INFO L87 Difference]: Start difference. First operand 264 states and 485 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:13,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:13,873 INFO L93 Difference]: Finished difference Result 220 states and 398 transitions. [2023-11-21 18:58:13,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 18:58:13,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 18:58:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:13,875 INFO L225 Difference]: With dead ends: 220 [2023-11-21 18:58:13,876 INFO L226 Difference]: Without dead ends: 220 [2023-11-21 18:58:13,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:58:13,877 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:13,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 9 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 18:58:13,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-21 18:58:13,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2023-11-21 18:58:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 187 states have (on average 2.128342245989305) internal successors, (398), 219 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 398 transitions. [2023-11-21 18:58:13,887 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 398 transitions. Word has length 6 [2023-11-21 18:58:13,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:13,888 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 398 transitions. [2023-11-21 18:58:13,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 398 transitions. [2023-11-21 18:58:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 18:58:13,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:13,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:13,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-21 18:58:14,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:14,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:14,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:14,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1922099975, now seen corresponding path program 1 times [2023-11-21 18:58:14,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:14,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480703739] [2023-11-21 18:58:14,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:14,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:14,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:14,095 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 18:58:14,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-21 18:58:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:14,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 18:58:14,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:14,333 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-21 18:58:14,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-11-21 18:58:14,374 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-21 18:58:14,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-21 18:58:14,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:58:14,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:14,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:14,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480703739] [2023-11-21 18:58:14,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480703739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:14,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:14,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 18:58:14,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205240073] [2023-11-21 18:58:14,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:14,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 18:58:14,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:14,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 18:58:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:58:14,424 INFO L87 Difference]: Start difference. First operand 220 states and 398 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:14,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:14,646 INFO L93 Difference]: Finished difference Result 219 states and 397 transitions. [2023-11-21 18:58:14,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 18:58:14,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-11-21 18:58:14,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:14,649 INFO L225 Difference]: With dead ends: 219 [2023-11-21 18:58:14,649 INFO L226 Difference]: Without dead ends: 219 [2023-11-21 18:58:14,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:58:14,650 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:14,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 13 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 18:58:14,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-21 18:58:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-11-21 18:58:14,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 187 states have (on average 2.122994652406417) internal successors, (397), 218 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 397 transitions. [2023-11-21 18:58:14,661 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 397 transitions. Word has length 7 [2023-11-21 18:58:14,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:14,662 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 397 transitions. [2023-11-21 18:58:14,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 397 transitions. [2023-11-21 18:58:14,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 18:58:14,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:14,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:14,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-21 18:58:14,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:14,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:14,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:14,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1922099976, now seen corresponding path program 1 times [2023-11-21 18:58:14,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:14,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994105818] [2023-11-21 18:58:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:14,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:14,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:14,871 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 18:58:14,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-21 18:58:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:15,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 18:58:15,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:15,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 18:58:15,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2023-11-21 18:58:15,103 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 10 treesize of output 8 [2023-11-21 18:58:15,179 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-21 18:58:15,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-11-21 18:58:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:58:15,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:15,330 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:15,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994105818] [2023-11-21 18:58:15,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994105818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:15,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:15,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:58:15,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550055254] [2023-11-21 18:58:15,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:15,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 18:58:15,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:15,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 18:58:15,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 18:58:15,333 INFO L87 Difference]: Start difference. First operand 219 states and 397 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:15,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:15,710 INFO L93 Difference]: Finished difference Result 218 states and 396 transitions. [2023-11-21 18:58:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 18:58:15,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-11-21 18:58:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:15,712 INFO L225 Difference]: With dead ends: 218 [2023-11-21 18:58:15,712 INFO L226 Difference]: Without dead ends: 218 [2023-11-21 18:58:15,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 18:58:15,713 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:15,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 25 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 18:58:15,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-21 18:58:15,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2023-11-21 18:58:15,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 187 states have (on average 2.1176470588235294) internal successors, (396), 217 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:15,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 396 transitions. [2023-11-21 18:58:15,722 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 396 transitions. Word has length 7 [2023-11-21 18:58:15,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:15,722 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 396 transitions. [2023-11-21 18:58:15,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:15,723 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 396 transitions. [2023-11-21 18:58:15,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 18:58:15,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:15,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:15,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-21 18:58:15,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:15,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:15,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash 776620476, now seen corresponding path program 1 times [2023-11-21 18:58:15,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:15,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437864709] [2023-11-21 18:58:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:15,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:15,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:15,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 18:58:15,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-21 18:58:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:16,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 18:58:16,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:16,098 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 7 [2023-11-21 18:58:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:58:16,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:16,103 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:16,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437864709] [2023-11-21 18:58:16,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437864709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:16,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:16,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:58:16,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233730897] [2023-11-21 18:58:16,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:16,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 18:58:16,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:16,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 18:58:16,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:58:16,105 INFO L87 Difference]: Start difference. First operand 218 states and 396 transitions. Second operand has 3 states, 2 states have (on average 5.0) 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) [2023-11-21 18:58:16,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:16,312 INFO L93 Difference]: Finished difference Result 212 states and 380 transitions. [2023-11-21 18:58:16,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 18:58:16,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) 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 [2023-11-21 18:58:16,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:16,314 INFO L225 Difference]: With dead ends: 212 [2023-11-21 18:58:16,314 INFO L226 Difference]: Without dead ends: 212 [2023-11-21 18:58:16,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:58:16,315 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:16,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 18:58:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-21 18:58:16,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 206. [2023-11-21 18:58:16,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 179 states have (on average 2.100558659217877) internal successors, (376), 205 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:16,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 376 transitions. [2023-11-21 18:58:16,324 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 376 transitions. Word has length 10 [2023-11-21 18:58:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:16,324 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 376 transitions. [2023-11-21 18:58:16,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) 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) [2023-11-21 18:58:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 376 transitions. [2023-11-21 18:58:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 18:58:16,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:16,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:16,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-21 18:58:16,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:16,534 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:16,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:16,535 INFO L85 PathProgramCache]: Analyzing trace with hash 776620477, now seen corresponding path program 1 times [2023-11-21 18:58:16,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:16,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969330994] [2023-11-21 18:58:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:16,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:16,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:16,537 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 18:58:16,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-21 18:58:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:16,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 18:58:16,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:16,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 18:58:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:58:16,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:16,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:16,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969330994] [2023-11-21 18:58:16,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969330994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:16,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:16,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:58:16,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731750885] [2023-11-21 18:58:16,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:16,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 18:58:16,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:16,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 18:58:16,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:58:16,718 INFO L87 Difference]: Start difference. First operand 206 states and 376 transitions. Second operand has 3 states, 2 states have (on average 5.0) 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) [2023-11-21 18:58:16,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:16,909 INFO L93 Difference]: Finished difference Result 182 states and 324 transitions. [2023-11-21 18:58:16,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 18:58:16,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) 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 [2023-11-21 18:58:16,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:16,911 INFO L225 Difference]: With dead ends: 182 [2023-11-21 18:58:16,911 INFO L226 Difference]: Without dead ends: 182 [2023-11-21 18:58:16,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 18:58:16,912 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:16,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 18:58:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-21 18:58:16,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-11-21 18:58:16,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 163 states have (on average 1.9877300613496933) internal successors, (324), 181 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:16,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 324 transitions. [2023-11-21 18:58:16,919 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 324 transitions. Word has length 10 [2023-11-21 18:58:16,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:16,920 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 324 transitions. [2023-11-21 18:58:16,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) 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) [2023-11-21 18:58:16,920 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 324 transitions. [2023-11-21 18:58:16,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 18:58:16,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:16,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:16,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-21 18:58:17,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:17,124 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:17,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:17,124 INFO L85 PathProgramCache]: Analyzing trace with hash -727462904, now seen corresponding path program 1 times [2023-11-21 18:58:17,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:17,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529411076] [2023-11-21 18:58:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:17,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:17,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:17,126 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 18:58:17,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-21 18:58:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:17,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 18:58:17,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:17,352 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 7 [2023-11-21 18:58:17,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2023-11-21 18:58:17,452 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-21 18:58:17,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 18:58:17,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-21 18:58:17,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 18:58:17,646 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 32 treesize of output 25 [2023-11-21 18:58:17,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-21 18:58:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:58:17,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:17,899 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:17,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529411076] [2023-11-21 18:58:17,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529411076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:17,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:17,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 18:58:17,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989194513] [2023-11-21 18:58:17,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:17,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 18:58:17,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:17,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 18:58:17,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-21 18:58:17,901 INFO L87 Difference]: Start difference. First operand 182 states and 324 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2023-11-21 18:58:18,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:18,841 INFO L93 Difference]: Finished difference Result 224 states and 404 transitions. [2023-11-21 18:58:18,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 18:58:18,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 [2023-11-21 18:58:18,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:18,846 INFO L225 Difference]: With dead ends: 224 [2023-11-21 18:58:18,846 INFO L226 Difference]: Without dead ends: 224 [2023-11-21 18:58:18,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 18:58:18,847 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 78 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:18,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 20 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 18:58:18,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-21 18:58:18,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 191. [2023-11-21 18:58:18,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 172 states have (on average 2.046511627906977) internal successors, (352), 190 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:18,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 352 transitions. [2023-11-21 18:58:18,857 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 352 transitions. Word has length 13 [2023-11-21 18:58:18,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:18,857 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 352 transitions. [2023-11-21 18:58:18,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2023-11-21 18:58:18,857 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 352 transitions. [2023-11-21 18:58:18,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 18:58:18,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:18,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:18,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-21 18:58:19,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:19,063 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:19,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:19,064 INFO L85 PathProgramCache]: Analyzing trace with hash -727462903, now seen corresponding path program 1 times [2023-11-21 18:58:19,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:19,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377566770] [2023-11-21 18:58:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:19,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:19,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:19,066 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 18:58:19,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-21 18:58:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:19,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-21 18:58:19,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:19,326 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 7 [2023-11-21 18:58:19,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2023-11-21 18:58:19,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2023-11-21 18:58:19,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 18:58:19,456 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 18:58:19,456 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 13 treesize of output 13 [2023-11-21 18:58:19,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 18:58:19,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-21 18:58:19,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-21 18:58:19,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 18:58:19,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2023-11-21 18:58:19,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 18:58:19,721 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 18 treesize of output 13 [2023-11-21 18:58:19,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-21 18:58:19,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-21 18:58:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:58:20,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:20,029 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:20,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377566770] [2023-11-21 18:58:20,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377566770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:20,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:20,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 18:58:20,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079097901] [2023-11-21 18:58:20,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:20,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 18:58:20,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:20,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 18:58:20,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-21 18:58:20,031 INFO L87 Difference]: Start difference. First operand 191 states and 352 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2023-11-21 18:58:21,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:21,590 INFO L93 Difference]: Finished difference Result 241 states and 434 transitions. [2023-11-21 18:58:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 18:58:21,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 [2023-11-21 18:58:21,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:21,593 INFO L225 Difference]: With dead ends: 241 [2023-11-21 18:58:21,593 INFO L226 Difference]: Without dead ends: 241 [2023-11-21 18:58:21,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-21 18:58:21,594 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 89 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:21,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 35 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-21 18:58:21,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-11-21 18:58:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 189. [2023-11-21 18:58:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 170 states have (on average 1.9823529411764707) internal successors, (337), 188 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:21,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 337 transitions. [2023-11-21 18:58:21,603 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 337 transitions. Word has length 13 [2023-11-21 18:58:21,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:21,604 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 337 transitions. [2023-11-21 18:58:21,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2023-11-21 18:58:21,604 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 337 transitions. [2023-11-21 18:58:21,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 18:58:21,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:21,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:21,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-21 18:58:21,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:21,811 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:21,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:21,812 INFO L85 PathProgramCache]: Analyzing trace with hash 988030569, now seen corresponding path program 1 times [2023-11-21 18:58:21,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:21,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592041020] [2023-11-21 18:58:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:21,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:21,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:21,814 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 18:58:21,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-21 18:58:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:22,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-21 18:58:22,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:22,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 18:58:22,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 18 [2023-11-21 18:58:22,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 18:58:22,185 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-21 18:58:22,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-21 18:58:22,306 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2023-11-21 18:58:22,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2023-11-21 18:58:22,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-21 18:58:22,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 18:58:22,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 41 [2023-11-21 18:58:23,048 INFO L349 Elim1Store]: treesize reduction 110, result has 29.5 percent of original size [2023-11-21 18:58:23,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 50 treesize of output 82 [2023-11-21 18:58:23,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 52 [2023-11-21 18:58:23,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 18:58:23,605 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 133 treesize of output 99 [2023-11-21 18:58:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:58:24,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:24,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:24,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592041020] [2023-11-21 18:58:24,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592041020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:24,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:24,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 18:58:24,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877790333] [2023-11-21 18:58:24,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:24,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 18:58:24,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:24,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 18:58:24,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 18:58:24,414 INFO L87 Difference]: Start difference. First operand 189 states and 337 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:31,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 18:58:38,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:38,204 INFO L93 Difference]: Finished difference Result 208 states and 371 transitions. [2023-11-21 18:58:38,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 18:58:38,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-21 18:58:38,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:38,207 INFO L225 Difference]: With dead ends: 208 [2023-11-21 18:58:38,207 INFO L226 Difference]: Without dead ends: 208 [2023-11-21 18:58:38,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-21 18:58:38,208 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 125 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:38,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 24 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 175 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-11-21 18:58:38,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-21 18:58:38,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 190. [2023-11-21 18:58:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 171 states have (on average 2.0116959064327484) internal successors, (344), 189 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 344 transitions. [2023-11-21 18:58:38,216 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 344 transitions. Word has length 15 [2023-11-21 18:58:38,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:38,217 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 344 transitions. [2023-11-21 18:58:38,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:38,217 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 344 transitions. [2023-11-21 18:58:38,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 18:58:38,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:38,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:38,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-21 18:58:38,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:38,424 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-21 18:58:38,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:38,425 INFO L85 PathProgramCache]: Analyzing trace with hash 988030570, now seen corresponding path program 1 times [2023-11-21 18:58:38,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:38,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213671206] [2023-11-21 18:58:38,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:38,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 18:58:38,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:38,426 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 18:58:38,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b98d6b-0950-4a9c-853b-2f5631f4df47/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-21 18:58:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:38,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-21 18:58:38,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:38,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2023-11-21 18:58:38,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 18:58:38,721 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 7 [2023-11-21 18:58:38,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2023-11-21 18:58:38,833 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-21 18:58:38,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-21 18:58:38,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 18:58:39,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-21 18:58:39,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-21 18:58:39,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 18:58:39,148 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 43 treesize of output 34 [2023-11-21 18:58:39,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 18:58:39,176 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 18 treesize of output 13 [2023-11-21 18:58:39,510 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2023-11-21 18:58:39,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2023-11-21 18:58:39,576 INFO L349 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2023-11-21 18:58:39,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2023-11-21 18:58:39,745 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 40 treesize of output 31 [2023-11-21 18:58:39,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-21 18:58:39,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2023-11-21 18:58:39,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-21 18:58:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:58:40,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:40,086 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:40,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213671206] [2023-11-21 18:58:40,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213671206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:40,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:40,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 18:58:40,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712241616] [2023-11-21 18:58:40,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:40,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 18:58:40,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:40,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 18:58:40,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 18:58:40,088 INFO L87 Difference]: Start difference. First operand 190 states and 344 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)