./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire --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 0a03a5fc32da65217c1f578a6fea0c2c0e07a09fd6b8159429f8d1aa4c1c45a8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:40:11,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:40:11,660 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 20:40:11,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:40:11,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:40:11,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:40:11,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:40:11,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:40:11,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:40:11,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:40:11,700 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:40:11,701 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:40:11,701 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:40:11,702 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:40:11,703 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:40:11,703 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:40:11,704 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:40:11,705 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:40:11,705 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:40:11,706 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:40:11,707 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:40:11,708 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:40:11,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:40:11,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:40:11,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:40:11,711 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:40:11,712 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:40:11,712 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:40:11,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:40:11,714 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 20:40:11,714 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 20:40:11,715 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 20:40:11,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:40:11,716 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:40:11,716 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:40:11,717 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:40:11,718 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:40:11,718 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:40:11,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:40:11,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:40:11,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:40:11,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:40:11,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:40:11,721 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:40:11,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:40:11,722 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:40:11,723 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:40:11,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:40:11,724 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_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a03a5fc32da65217c1f578a6fea0c2c0e07a09fd6b8159429f8d1aa4c1c45a8 [2023-11-23 20:40:12,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:40:12,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:40:12,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:40:12,035 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:40:12,036 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:40:12,037 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-23 20:40:15,109 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:40:15,488 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:40:15,489 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/sv-benchmarks/c/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-23 20:40:15,518 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/data/878bcd742/ea567be62ac84268bfd116234b8e261e/FLAG9e0aec97e [2023-11-23 20:40:15,537 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/data/878bcd742/ea567be62ac84268bfd116234b8e261e [2023-11-23 20:40:15,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:40:15,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:40:15,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:40:15,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:40:15,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:40:15,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7480dd12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15, skipping insertion in model container [2023-11-23 20:40:15,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,632 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:40:16,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:40:16,134 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:40:16,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:40:16,248 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:40:16,248 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:40:16,256 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:40:16,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16 WrapperNode [2023-11-23 20:40:16,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:40:16,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:40:16,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:40:16,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:40:16,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,333 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 149 [2023-11-23 20:40:16,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:40:16,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:40:16,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:40:16,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:40:16,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,359 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,366 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:40:16,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:40:16,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:40:16,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:40:16,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:40:16,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:16,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:40:16,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:40:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:40:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 20:40:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:40:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:40:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:40:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 20:40:16,452 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 20:40:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 20:40:16,453 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 20:40:16,453 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 20:40:16,453 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 20:40:16,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:40:16,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 20:40:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:40:16,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:40:16,456 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 20:40:16,607 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:40:16,610 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:40:17,062 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:40:17,320 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:40:17,320 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:40:17,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:17 BoogieIcfgContainer [2023-11-23 20:40:17,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:40:17,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:40:17,325 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:40:17,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:40:17,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:40:15" (1/3) ... [2023-11-23 20:40:17,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6024c752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:40:17, skipping insertion in model container [2023-11-23 20:40:17,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (2/3) ... [2023-11-23 20:40:17,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6024c752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:40:17, skipping insertion in model container [2023-11-23 20:40:17,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:17" (3/3) ... [2023-11-23 20:40:17,332 INFO L112 eAbstractionObserver]: Analyzing ICFG mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-23 20:40:17,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:40:17,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-23 20:40:17,353 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 20:40:17,410 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 20:40:17,451 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 53 transitions, 118 flow [2023-11-23 20:40:17,819 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5920 states, 5909 states have (on average 3.6083939752919276) internal successors, (21322), 5919 states have internal predecessors, (21322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:17,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:40:17,849 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;@707589b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:40:17,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-23 20:40:17,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 5920 states, 5909 states have (on average 3.6083939752919276) internal successors, (21322), 5919 states have internal predecessors, (21322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:17,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 20:40:17,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:17,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 20:40:17,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:17,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:17,889 INFO L85 PathProgramCache]: Analyzing trace with hash 12145, now seen corresponding path program 1 times [2023-11-23 20:40:17,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:17,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129908658] [2023-11-23 20:40:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:17,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:18,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:18,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129908658] [2023-11-23 20:40:18,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129908658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:18,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:18,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:40:18,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780451265] [2023-11-23 20:40:18,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:18,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:18,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:18,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:18,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:18,328 INFO L87 Difference]: Start difference. First operand has 5920 states, 5909 states have (on average 3.6083939752919276) internal successors, (21322), 5919 states have internal predecessors, (21322), 0 states have call successors, (0), 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) [2023-11-23 20:40:18,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:18,545 INFO L93 Difference]: Finished difference Result 5527 states and 19130 transitions. [2023-11-23 20:40:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:18,547 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 [2023-11-23 20:40:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:18,709 INFO L225 Difference]: With dead ends: 5527 [2023-11-23 20:40:18,710 INFO L226 Difference]: Without dead ends: 5527 [2023-11-23 20:40:18,712 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 [2023-11-23 20:40:18,716 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:18,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 31 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:18,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5527 states. [2023-11-23 20:40:19,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5527 to 5527. [2023-11-23 20:40:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5527 states, 5517 states have (on average 3.467464201558818) internal successors, (19130), 5526 states have internal predecessors, (19130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5527 states to 5527 states and 19130 transitions. [2023-11-23 20:40:19,132 INFO L78 Accepts]: Start accepts. Automaton has 5527 states and 19130 transitions. Word has length 2 [2023-11-23 20:40:19,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:19,133 INFO L495 AbstractCegarLoop]: Abstraction has 5527 states and 19130 transitions. [2023-11-23 20:40:19,134 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) [2023-11-23 20:40:19,134 INFO L276 IsEmpty]: Start isEmpty. Operand 5527 states and 19130 transitions. [2023-11-23 20:40:19,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 20:40:19,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:19,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 20:40:19,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:40:19,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:19,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash 12146, now seen corresponding path program 1 times [2023-11-23 20:40:19,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:19,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124067670] [2023-11-23 20:40:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:19,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:19,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:19,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124067670] [2023-11-23 20:40:19,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124067670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:19,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:19,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:40:19,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23589994] [2023-11-23 20:40:19,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:19,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:19,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:19,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:19,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:19,301 INFO L87 Difference]: Start difference. First operand 5527 states and 19130 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) [2023-11-23 20:40:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:19,564 INFO L93 Difference]: Finished difference Result 5526 states and 19129 transitions. [2023-11-23 20:40:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:19,565 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 [2023-11-23 20:40:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:19,631 INFO L225 Difference]: With dead ends: 5526 [2023-11-23 20:40:19,631 INFO L226 Difference]: Without dead ends: 5526 [2023-11-23 20:40:19,634 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 [2023-11-23 20:40:19,636 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:19,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:19,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2023-11-23 20:40:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5526. [2023-11-23 20:40:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 5517 states have (on average 3.467282943628784) internal successors, (19129), 5525 states have internal predecessors, (19129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 19129 transitions. [2023-11-23 20:40:19,980 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 19129 transitions. Word has length 2 [2023-11-23 20:40:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:19,981 INFO L495 AbstractCegarLoop]: Abstraction has 5526 states and 19129 transitions. [2023-11-23 20:40:19,982 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) [2023-11-23 20:40:19,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 19129 transitions. [2023-11-23 20:40:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 20:40:19,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:19,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 20:40:19,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:40:19,984 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:19,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:19,985 INFO L85 PathProgramCache]: Analyzing trace with hash 362175033, now seen corresponding path program 1 times [2023-11-23 20:40:19,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:19,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803201376] [2023-11-23 20:40:19,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:19,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:20,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:20,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803201376] [2023-11-23 20:40:20,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803201376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:20,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:20,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:20,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553300696] [2023-11-23 20:40:20,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:20,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:20,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:20,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:20,075 INFO L87 Difference]: Start difference. First operand 5526 states and 19129 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:20,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:20,205 INFO L93 Difference]: Finished difference Result 5519 states and 19116 transitions. [2023-11-23 20:40:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:20,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 20:40:20,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:20,349 INFO L225 Difference]: With dead ends: 5519 [2023-11-23 20:40:20,350 INFO L226 Difference]: Without dead ends: 5519 [2023-11-23 20:40:20,350 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 [2023-11-23 20:40:20,352 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 36 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:20,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 36 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:20,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2023-11-23 20:40:20,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5519. [2023-11-23 20:40:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5519 states, 5511 states have (on average 3.4686989657049536) internal successors, (19116), 5518 states have internal predecessors, (19116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:20,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 19116 transitions. [2023-11-23 20:40:20,626 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 19116 transitions. Word has length 5 [2023-11-23 20:40:20,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:20,627 INFO L495 AbstractCegarLoop]: Abstraction has 5519 states and 19116 transitions. [2023-11-23 20:40:20,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:20,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 19116 transitions. [2023-11-23 20:40:20,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 20:40:20,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:20,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 20:40:20,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:40:20,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:20,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:20,629 INFO L85 PathProgramCache]: Analyzing trace with hash 362175034, now seen corresponding path program 1 times [2023-11-23 20:40:20,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:20,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139820426] [2023-11-23 20:40:20,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:20,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:20,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:20,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139820426] [2023-11-23 20:40:20,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139820426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:20,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:20,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:20,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149860017] [2023-11-23 20:40:20,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:20,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:20,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:20,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:20,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:20,811 INFO L87 Difference]: Start difference. First operand 5519 states and 19116 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:20,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:20,954 INFO L93 Difference]: Finished difference Result 5512 states and 19103 transitions. [2023-11-23 20:40:20,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:20,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 20:40:20,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:20,992 INFO L225 Difference]: With dead ends: 5512 [2023-11-23 20:40:20,992 INFO L226 Difference]: Without dead ends: 5512 [2023-11-23 20:40:20,993 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 [2023-11-23 20:40:20,994 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 35 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:20,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 37 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:21,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5512 states. [2023-11-23 20:40:21,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5512 to 5512. [2023-11-23 20:40:21,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5512 states, 5505 states have (on average 3.4701180744777473) internal successors, (19103), 5511 states have internal predecessors, (19103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5512 states to 5512 states and 19103 transitions. [2023-11-23 20:40:21,348 INFO L78 Accepts]: Start accepts. Automaton has 5512 states and 19103 transitions. Word has length 5 [2023-11-23 20:40:21,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:21,348 INFO L495 AbstractCegarLoop]: Abstraction has 5512 states and 19103 transitions. [2023-11-23 20:40:21,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:21,349 INFO L276 IsEmpty]: Start isEmpty. Operand 5512 states and 19103 transitions. [2023-11-23 20:40:21,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:40:21,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:21,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:21,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:40:21,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:21,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:21,351 INFO L85 PathProgramCache]: Analyzing trace with hash 598921393, now seen corresponding path program 1 times [2023-11-23 20:40:21,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:21,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386794778] [2023-11-23 20:40:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:21,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:21,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:21,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386794778] [2023-11-23 20:40:21,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386794778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:21,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:21,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:21,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710354738] [2023-11-23 20:40:21,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:21,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:21,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:21,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:21,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:21,423 INFO L87 Difference]: Start difference. First operand 5512 states and 19103 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:21,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:21,638 INFO L93 Difference]: Finished difference Result 5463 states and 18970 transitions. [2023-11-23 20:40:21,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:21,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-23 20:40:21,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:21,669 INFO L225 Difference]: With dead ends: 5463 [2023-11-23 20:40:21,669 INFO L226 Difference]: Without dead ends: 5463 [2023-11-23 20:40:21,670 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 [2023-11-23 20:40:21,671 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:21,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 40 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:21,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5463 states. [2023-11-23 20:40:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5463 to 5463. [2023-11-23 20:40:21,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 5457 states have (on average 3.4762690122778084) internal successors, (18970), 5462 states have internal predecessors, (18970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 18970 transitions. [2023-11-23 20:40:21,918 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 18970 transitions. Word has length 8 [2023-11-23 20:40:21,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:21,919 INFO L495 AbstractCegarLoop]: Abstraction has 5463 states and 18970 transitions. [2023-11-23 20:40:21,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:21,920 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 18970 transitions. [2023-11-23 20:40:21,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:40:21,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:21,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:21,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 20:40:21,921 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:21,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:21,922 INFO L85 PathProgramCache]: Analyzing trace with hash 598921394, now seen corresponding path program 1 times [2023-11-23 20:40:21,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:21,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547506064] [2023-11-23 20:40:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:22,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:22,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547506064] [2023-11-23 20:40:22,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547506064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:22,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:22,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:22,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695444778] [2023-11-23 20:40:22,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:22,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:22,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:22,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:22,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:22,005 INFO L87 Difference]: Start difference. First operand 5463 states and 18970 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:22,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:22,109 INFO L93 Difference]: Finished difference Result 5414 states and 18837 transitions. [2023-11-23 20:40:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:22,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-23 20:40:22,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:22,240 INFO L225 Difference]: With dead ends: 5414 [2023-11-23 20:40:22,240 INFO L226 Difference]: Without dead ends: 5414 [2023-11-23 20:40:22,241 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 [2023-11-23 20:40:22,244 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:22,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:22,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5414 states. [2023-11-23 20:40:22,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5414 to 5414. [2023-11-23 20:40:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5409 states have (on average 3.4825291181364393) internal successors, (18837), 5413 states have internal predecessors, (18837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 18837 transitions. [2023-11-23 20:40:22,489 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 18837 transitions. Word has length 8 [2023-11-23 20:40:22,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:22,489 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 18837 transitions. [2023-11-23 20:40:22,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:22,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 18837 transitions. [2023-11-23 20:40:22,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:40:22,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:22,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:22,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 20:40:22,492 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:22,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:22,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1173437312, now seen corresponding path program 1 times [2023-11-23 20:40:22,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:22,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768009180] [2023-11-23 20:40:22,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:22,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:22,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:22,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768009180] [2023-11-23 20:40:22,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768009180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:22,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:22,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:40:22,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789955161] [2023-11-23 20:40:22,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:22,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:22,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:22,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:22,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:22,674 INFO L87 Difference]: Start difference. First operand 5414 states and 18837 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:22,767 INFO L93 Difference]: Finished difference Result 4728 states and 16338 transitions. [2023-11-23 20:40:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:22,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 20:40:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:22,880 INFO L225 Difference]: With dead ends: 4728 [2023-11-23 20:40:22,880 INFO L226 Difference]: Without dead ends: 4630 [2023-11-23 20:40:22,883 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 [2023-11-23 20:40:22,887 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:22,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 36 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:22,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4630 states. [2023-11-23 20:40:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4630 to 4630. [2023-11-23 20:40:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4630 states, 4628 states have (on average 3.4621866897147795) internal successors, (16023), 4629 states have internal predecessors, (16023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4630 states to 4630 states and 16023 transitions. [2023-11-23 20:40:23,033 INFO L78 Accepts]: Start accepts. Automaton has 4630 states and 16023 transitions. Word has length 11 [2023-11-23 20:40:23,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:23,033 INFO L495 AbstractCegarLoop]: Abstraction has 4630 states and 16023 transitions. [2023-11-23 20:40:23,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:23,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4630 states and 16023 transitions. [2023-11-23 20:40:23,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 20:40:23,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:23,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:23,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 20:40:23,046 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:23,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:23,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1500376587, now seen corresponding path program 1 times [2023-11-23 20:40:23,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:23,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945647497] [2023-11-23 20:40:23,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:23,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:23,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:23,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945647497] [2023-11-23 20:40:23,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945647497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:23,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:23,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:40:23,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559755041] [2023-11-23 20:40:23,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:23,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 20:40:23,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:23,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 20:40:23,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:40:23,709 INFO L87 Difference]: Start difference. First operand 4630 states and 16023 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:23,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:23,993 INFO L93 Difference]: Finished difference Result 4287 states and 14798 transitions. [2023-11-23 20:40:23,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:40:23,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-23 20:40:23,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:24,010 INFO L225 Difference]: With dead ends: 4287 [2023-11-23 20:40:24,010 INFO L226 Difference]: Without dead ends: 3601 [2023-11-23 20:40:24,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:40:24,011 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 57 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:24,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 201 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:24,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2023-11-23 20:40:24,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3601. [2023-11-23 20:40:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 3600 states have (on average 3.43) internal successors, (12348), 3600 states have internal predecessors, (12348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 12348 transitions. [2023-11-23 20:40:24,122 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 12348 transitions. Word has length 18 [2023-11-23 20:40:24,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:24,122 INFO L495 AbstractCegarLoop]: Abstraction has 3601 states and 12348 transitions. [2023-11-23 20:40:24,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 12348 transitions. [2023-11-23 20:40:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 20:40:24,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:24,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:24,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 20:40:24,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:24,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:24,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1500377960, now seen corresponding path program 1 times [2023-11-23 20:40:24,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:24,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63650053] [2023-11-23 20:40:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:24,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:24,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:24,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63650053] [2023-11-23 20:40:24,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63650053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:24,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:24,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:40:24,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541146612] [2023-11-23 20:40:24,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:24,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:40:24,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:24,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:40:24,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:40:24,706 INFO L87 Difference]: Start difference. First operand 3601 states and 12348 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:25,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:25,386 INFO L93 Difference]: Finished difference Result 6113 states and 20298 transitions. [2023-11-23 20:40:25,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 20:40:25,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-23 20:40:25,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:25,410 INFO L225 Difference]: With dead ends: 6113 [2023-11-23 20:40:25,410 INFO L226 Difference]: Without dead ends: 5031 [2023-11-23 20:40:25,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-23 20:40:25,412 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 105 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:25,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 190 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 20:40:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2023-11-23 20:40:25,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 3551. [2023-11-23 20:40:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3551 states, 3550 states have (on average 3.3625352112676055) internal successors, (11937), 3550 states have internal predecessors, (11937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:25,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 11937 transitions. [2023-11-23 20:40:25,551 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 11937 transitions. Word has length 18 [2023-11-23 20:40:25,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:25,552 INFO L495 AbstractCegarLoop]: Abstraction has 3551 states and 11937 transitions. [2023-11-23 20:40:25,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:25,552 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 11937 transitions. [2023-11-23 20:40:25,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 20:40:25,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:25,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:25,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 20:40:25,558 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:25,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:25,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1233559095, now seen corresponding path program 1 times [2023-11-23 20:40:25,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:25,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673125374] [2023-11-23 20:40:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:25,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:26,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:26,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673125374] [2023-11-23 20:40:26,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673125374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:26,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:26,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:40:26,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148916997] [2023-11-23 20:40:26,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:26,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:40:26,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:40:26,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:40:26,388 INFO L87 Difference]: Start difference. First operand 3551 states and 11937 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:26,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:26,634 INFO L93 Difference]: Finished difference Result 4003 states and 13222 transitions. [2023-11-23 20:40:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:40:26,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-23 20:40:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:26,652 INFO L225 Difference]: With dead ends: 4003 [2023-11-23 20:40:26,652 INFO L226 Difference]: Without dead ends: 3401 [2023-11-23 20:40:26,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:40:26,654 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 76 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:26,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 127 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:26,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2023-11-23 20:40:26,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3385. [2023-11-23 20:40:26,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3385 states, 3384 states have (on average 3.3460401891252953) internal successors, (11323), 3384 states have internal predecessors, (11323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 11323 transitions. [2023-11-23 20:40:26,852 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 11323 transitions. Word has length 20 [2023-11-23 20:40:26,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:26,853 INFO L495 AbstractCegarLoop]: Abstraction has 3385 states and 11323 transitions. [2023-11-23 20:40:26,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:26,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 11323 transitions. [2023-11-23 20:40:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 20:40:26,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:26,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:26,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 20:40:26,861 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:26,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:26,862 INFO L85 PathProgramCache]: Analyzing trace with hash 500886662, now seen corresponding path program 1 times [2023-11-23 20:40:26,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:26,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473974601] [2023-11-23 20:40:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:26,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:27,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:27,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473974601] [2023-11-23 20:40:27,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473974601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:27,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:27,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 20:40:27,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113181573] [2023-11-23 20:40:27,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:27,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 20:40:27,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:27,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 20:40:27,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:40:27,594 INFO L87 Difference]: Start difference. First operand 3385 states and 11323 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:28,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:28,006 INFO L93 Difference]: Finished difference Result 3729 states and 12305 transitions. [2023-11-23 20:40:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 20:40:28,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-23 20:40:28,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:28,023 INFO L225 Difference]: With dead ends: 3729 [2023-11-23 20:40:28,023 INFO L226 Difference]: Without dead ends: 3337 [2023-11-23 20:40:28,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-23 20:40:28,024 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 128 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:28,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 193 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:28,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2023-11-23 20:40:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 3299. [2023-11-23 20:40:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 3298 states have (on average 3.338083687083081) internal successors, (11009), 3298 states have internal predecessors, (11009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 11009 transitions. [2023-11-23 20:40:28,156 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 11009 transitions. Word has length 21 [2023-11-23 20:40:28,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:28,156 INFO L495 AbstractCegarLoop]: Abstraction has 3299 states and 11009 transitions. [2023-11-23 20:40:28,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:28,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 11009 transitions. [2023-11-23 20:40:28,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 20:40:28,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:28,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:28,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 20:40:28,169 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:28,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:28,169 INFO L85 PathProgramCache]: Analyzing trace with hash 932146218, now seen corresponding path program 1 times [2023-11-23 20:40:28,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:28,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415662679] [2023-11-23 20:40:28,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:28,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:29,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:29,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415662679] [2023-11-23 20:40:29,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415662679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:29,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:29,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 20:40:29,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816406984] [2023-11-23 20:40:29,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:29,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:40:29,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:29,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:40:29,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:40:29,020 INFO L87 Difference]: Start difference. First operand 3299 states and 11009 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:29,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:29,329 INFO L93 Difference]: Finished difference Result 3383 states and 11158 transitions. [2023-11-23 20:40:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:40:29,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-23 20:40:29,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:29,343 INFO L225 Difference]: With dead ends: 3383 [2023-11-23 20:40:29,344 INFO L226 Difference]: Without dead ends: 3089 [2023-11-23 20:40:29,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-23 20:40:29,345 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 96 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:29,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 188 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:29,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2023-11-23 20:40:29,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 3065. [2023-11-23 20:40:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3065 states, 3064 states have (on average 3.3325718015665795) internal successors, (10211), 3064 states have internal predecessors, (10211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:29,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3065 states to 3065 states and 10211 transitions. [2023-11-23 20:40:29,468 INFO L78 Accepts]: Start accepts. Automaton has 3065 states and 10211 transitions. Word has length 22 [2023-11-23 20:40:29,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:29,469 INFO L495 AbstractCegarLoop]: Abstraction has 3065 states and 10211 transitions. [2023-11-23 20:40:29,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3065 states and 10211 transitions. [2023-11-23 20:40:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 20:40:29,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:29,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:29,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 20:40:29,478 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:29,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:29,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2053497941, now seen corresponding path program 1 times [2023-11-23 20:40:29,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:29,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901239689] [2023-11-23 20:40:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:29,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:30,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:30,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:30,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901239689] [2023-11-23 20:40:30,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901239689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:30,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:30,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 20:40:30,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83262999] [2023-11-23 20:40:30,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:30,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 20:40:30,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:30,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 20:40:30,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:40:30,169 INFO L87 Difference]: Start difference. First operand 3065 states and 10211 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:30,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:30,428 INFO L93 Difference]: Finished difference Result 3345 states and 10950 transitions. [2023-11-23 20:40:30,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:40:30,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-23 20:40:30,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:30,441 INFO L225 Difference]: With dead ends: 3345 [2023-11-23 20:40:30,441 INFO L226 Difference]: Without dead ends: 2915 [2023-11-23 20:40:30,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-23 20:40:30,442 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 128 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:30,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 162 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:30,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2023-11-23 20:40:30,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2899. [2023-11-23 20:40:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2898 states have (on average 3.3115942028985508) internal successors, (9597), 2898 states have internal predecessors, (9597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 9597 transitions. [2023-11-23 20:40:30,555 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 9597 transitions. Word has length 22 [2023-11-23 20:40:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:30,555 INFO L495 AbstractCegarLoop]: Abstraction has 2899 states and 9597 transitions. [2023-11-23 20:40:30,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 9597 transitions. [2023-11-23 20:40:30,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 20:40:30,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:30,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:30,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 20:40:30,565 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:30,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1698436312, now seen corresponding path program 1 times [2023-11-23 20:40:30,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:30,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403114995] [2023-11-23 20:40:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:30,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:31,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:31,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403114995] [2023-11-23 20:40:31,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403114995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:31,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:31,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 20:40:31,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293762312] [2023-11-23 20:40:31,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:31,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:40:31,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:31,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:40:31,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:40:31,233 INFO L87 Difference]: Start difference. First operand 2899 states and 9597 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:31,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:31,603 INFO L93 Difference]: Finished difference Result 3293 states and 10819 transitions. [2023-11-23 20:40:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 20:40:31,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-23 20:40:31,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:31,628 INFO L225 Difference]: With dead ends: 3293 [2023-11-23 20:40:31,628 INFO L226 Difference]: Without dead ends: 3013 [2023-11-23 20:40:31,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-23 20:40:31,629 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 131 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:31,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 248 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2023-11-23 20:40:31,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 2979. [2023-11-23 20:40:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2978 states have (on average 3.318334452652787) internal successors, (9882), 2978 states have internal predecessors, (9882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 9882 transitions. [2023-11-23 20:40:31,738 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 9882 transitions. Word has length 23 [2023-11-23 20:40:31,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:31,739 INFO L495 AbstractCegarLoop]: Abstraction has 2979 states and 9882 transitions. [2023-11-23 20:40:31,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 9882 transitions. [2023-11-23 20:40:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 20:40:31,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:31,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:31,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 20:40:31,748 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:31,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:31,749 INFO L85 PathProgramCache]: Analyzing trace with hash 27043146, now seen corresponding path program 2 times [2023-11-23 20:40:31,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:31,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927252758] [2023-11-23 20:40:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:31,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:32,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:32,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:32,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927252758] [2023-11-23 20:40:32,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927252758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:32,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:32,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 20:40:32,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050957655] [2023-11-23 20:40:32,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:32,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:40:32,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:32,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:40:32,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:40:32,810 INFO L87 Difference]: Start difference. First operand 2979 states and 9882 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:33,425 INFO L93 Difference]: Finished difference Result 4679 states and 15219 transitions. [2023-11-23 20:40:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 20:40:33,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-23 20:40:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:33,441 INFO L225 Difference]: With dead ends: 4679 [2023-11-23 20:40:33,442 INFO L226 Difference]: Without dead ends: 4247 [2023-11-23 20:40:33,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-23 20:40:33,444 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 115 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:33,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 268 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 20:40:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2023-11-23 20:40:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 3190. [2023-11-23 20:40:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 3189 states have (on average 3.3047977422389465) internal successors, (10539), 3189 states have internal predecessors, (10539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 10539 transitions. [2023-11-23 20:40:33,562 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 10539 transitions. Word has length 23 [2023-11-23 20:40:33,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:33,563 INFO L495 AbstractCegarLoop]: Abstraction has 3190 states and 10539 transitions. [2023-11-23 20:40:33,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:33,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 10539 transitions. [2023-11-23 20:40:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 20:40:33,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:33,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:33,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 20:40:33,574 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:33,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:33,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2063424724, now seen corresponding path program 3 times [2023-11-23 20:40:33,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:33,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413479454] [2023-11-23 20:40:33,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:33,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:34,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:34,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413479454] [2023-11-23 20:40:34,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413479454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:34,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:34,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 20:40:34,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798749541] [2023-11-23 20:40:34,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:34,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:40:34,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:34,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:40:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:40:34,009 INFO L87 Difference]: Start difference. First operand 3190 states and 10539 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:34,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:34,263 INFO L93 Difference]: Finished difference Result 3724 states and 12206 transitions. [2023-11-23 20:40:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:40:34,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-23 20:40:34,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:34,275 INFO L225 Difference]: With dead ends: 3724 [2023-11-23 20:40:34,275 INFO L226 Difference]: Without dead ends: 3444 [2023-11-23 20:40:34,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-23 20:40:34,276 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 117 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:34,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 187 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:34,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2023-11-23 20:40:34,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 3139. [2023-11-23 20:40:34,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 3138 states have (on average 3.3033779477374123) internal successors, (10366), 3138 states have internal predecessors, (10366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 10366 transitions. [2023-11-23 20:40:34,367 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 10366 transitions. Word has length 23 [2023-11-23 20:40:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:34,367 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 10366 transitions. [2023-11-23 20:40:34,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:34,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 10366 transitions. [2023-11-23 20:40:34,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 20:40:34,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:34,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:34,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 20:40:34,375 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:34,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:34,376 INFO L85 PathProgramCache]: Analyzing trace with hash -352216770, now seen corresponding path program 4 times [2023-11-23 20:40:34,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:34,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458146028] [2023-11-23 20:40:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:34,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:34,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:34,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458146028] [2023-11-23 20:40:34,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458146028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:34,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:34,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:34,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129563498] [2023-11-23 20:40:34,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:34,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:34,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:34,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:34,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:34,534 INFO L87 Difference]: Start difference. First operand 3139 states and 10366 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:34,633 INFO L93 Difference]: Finished difference Result 2870 states and 8928 transitions. [2023-11-23 20:40:34,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:40:34,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-23 20:40:34,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:34,641 INFO L225 Difference]: With dead ends: 2870 [2023-11-23 20:40:34,641 INFO L226 Difference]: Without dead ends: 2489 [2023-11-23 20:40:34,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:34,642 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:34,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 41 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:34,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2023-11-23 20:40:34,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2489. [2023-11-23 20:40:34,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 2488 states have (on average 3.1386655948553055) internal successors, (7809), 2488 states have internal predecessors, (7809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:34,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 7809 transitions. [2023-11-23 20:40:34,708 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 7809 transitions. Word has length 23 [2023-11-23 20:40:34,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:34,709 INFO L495 AbstractCegarLoop]: Abstraction has 2489 states and 7809 transitions. [2023-11-23 20:40:34,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:34,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 7809 transitions. [2023-11-23 20:40:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 20:40:34,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:34,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:34,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 20:40:34,717 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:34,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:34,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1537984041, now seen corresponding path program 1 times [2023-11-23 20:40:34,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:34,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463160926] [2023-11-23 20:40:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:34,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:35,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:35,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463160926] [2023-11-23 20:40:35,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463160926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:35,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:35,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 20:40:35,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487074749] [2023-11-23 20:40:35,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:35,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 20:40:35,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 20:40:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:40:35,489 INFO L87 Difference]: Start difference. First operand 2489 states and 7809 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:35,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:35,815 INFO L93 Difference]: Finished difference Result 2861 states and 8919 transitions. [2023-11-23 20:40:35,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 20:40:35,816 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-23 20:40:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:35,824 INFO L225 Difference]: With dead ends: 2861 [2023-11-23 20:40:35,824 INFO L226 Difference]: Without dead ends: 2701 [2023-11-23 20:40:35,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-23 20:40:35,825 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 96 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:35,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 284 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:35,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2023-11-23 20:40:35,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2673. [2023-11-23 20:40:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2673 states, 2672 states have (on average 3.1418413173652695) internal successors, (8395), 2672 states have internal predecessors, (8395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:35,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 8395 transitions. [2023-11-23 20:40:35,887 INFO L78 Accepts]: Start accepts. Automaton has 2673 states and 8395 transitions. Word has length 25 [2023-11-23 20:40:35,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:35,887 INFO L495 AbstractCegarLoop]: Abstraction has 2673 states and 8395 transitions. [2023-11-23 20:40:35,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2673 states and 8395 transitions. [2023-11-23 20:40:35,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 20:40:35,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:35,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:35,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 20:40:35,901 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:35,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:35,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1031503797, now seen corresponding path program 2 times [2023-11-23 20:40:35,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:35,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946820061] [2023-11-23 20:40:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:35,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:36,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:36,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946820061] [2023-11-23 20:40:36,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946820061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:36,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:36,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 20:40:36,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863404946] [2023-11-23 20:40:36,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:36,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 20:40:36,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:36,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 20:40:36,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:40:36,655 INFO L87 Difference]: Start difference. First operand 2673 states and 8395 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:36,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:36,987 INFO L93 Difference]: Finished difference Result 2915 states and 9060 transitions. [2023-11-23 20:40:36,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 20:40:36,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-23 20:40:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:36,996 INFO L225 Difference]: With dead ends: 2915 [2023-11-23 20:40:36,996 INFO L226 Difference]: Without dead ends: 2727 [2023-11-23 20:40:36,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-23 20:40:36,997 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 107 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:36,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 234 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:37,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2023-11-23 20:40:37,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2509. [2023-11-23 20:40:37,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2508 states have (on average 3.159489633173844) internal successors, (7924), 2508 states have internal predecessors, (7924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 7924 transitions. [2023-11-23 20:40:37,055 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 7924 transitions. Word has length 25 [2023-11-23 20:40:37,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:37,056 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 7924 transitions. [2023-11-23 20:40:37,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:37,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 7924 transitions. [2023-11-23 20:40:37,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 20:40:37,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:37,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:37,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 20:40:37,063 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:37,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:37,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1832556649, now seen corresponding path program 3 times [2023-11-23 20:40:37,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:37,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399229115] [2023-11-23 20:40:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:37,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:37,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:37,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399229115] [2023-11-23 20:40:37,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399229115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:37,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:37,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 20:40:37,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372853833] [2023-11-23 20:40:37,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:37,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 20:40:37,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:37,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 20:40:37,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:40:37,773 INFO L87 Difference]: Start difference. First operand 2509 states and 7924 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:38,148 INFO L93 Difference]: Finished difference Result 2889 states and 9066 transitions. [2023-11-23 20:40:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 20:40:38,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-23 20:40:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:38,156 INFO L225 Difference]: With dead ends: 2889 [2023-11-23 20:40:38,156 INFO L226 Difference]: Without dead ends: 2729 [2023-11-23 20:40:38,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-23 20:40:38,158 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 120 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:38,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 302 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 20:40:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2023-11-23 20:40:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2517. [2023-11-23 20:40:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2516 states have (on average 3.1573926868044517) internal successors, (7944), 2516 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:38,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 7944 transitions. [2023-11-23 20:40:38,220 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 7944 transitions. Word has length 25 [2023-11-23 20:40:38,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:38,220 INFO L495 AbstractCegarLoop]: Abstraction has 2517 states and 7944 transitions. [2023-11-23 20:40:38,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:38,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 7944 transitions. [2023-11-23 20:40:38,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 20:40:38,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:38,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:38,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 20:40:38,226 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:38,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:38,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1767670692, now seen corresponding path program 1 times [2023-11-23 20:40:38,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:38,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412149565] [2023-11-23 20:40:38,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:38,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:38,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:38,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412149565] [2023-11-23 20:40:38,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412149565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:38,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:38,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:40:38,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502118358] [2023-11-23 20:40:38,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:38,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:40:38,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:38,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:40:38,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:38,385 INFO L87 Difference]: Start difference. First operand 2517 states and 7944 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:38,499 INFO L93 Difference]: Finished difference Result 1755 states and 5223 transitions. [2023-11-23 20:40:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:40:38,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-23 20:40:38,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:38,503 INFO L225 Difference]: With dead ends: 1755 [2023-11-23 20:40:38,503 INFO L226 Difference]: Without dead ends: 1501 [2023-11-23 20:40:38,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:40:38,505 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 106 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:38,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 51 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2023-11-23 20:40:38,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1501. [2023-11-23 20:40:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1500 states have (on average 2.968) internal successors, (4452), 1500 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:38,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 4452 transitions. [2023-11-23 20:40:38,538 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 4452 transitions. Word has length 25 [2023-11-23 20:40:38,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:38,539 INFO L495 AbstractCegarLoop]: Abstraction has 1501 states and 4452 transitions. [2023-11-23 20:40:38,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:38,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 4452 transitions. [2023-11-23 20:40:38,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 20:40:38,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:38,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:38,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 20:40:38,543 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:38,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:38,543 INFO L85 PathProgramCache]: Analyzing trace with hash -586975256, now seen corresponding path program 1 times [2023-11-23 20:40:38,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:38,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879968512] [2023-11-23 20:40:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:38,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:39,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:39,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879968512] [2023-11-23 20:40:39,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879968512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:39,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:39,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 20:40:39,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395840211] [2023-11-23 20:40:39,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:39,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:40:39,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:39,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:40:39,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:40:39,018 INFO L87 Difference]: Start difference. First operand 1501 states and 4452 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:39,272 INFO L93 Difference]: Finished difference Result 2253 states and 6567 transitions. [2023-11-23 20:40:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:40:39,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-23 20:40:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:39,276 INFO L225 Difference]: With dead ends: 2253 [2023-11-23 20:40:39,276 INFO L226 Difference]: Without dead ends: 1541 [2023-11-23 20:40:39,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:40:39,279 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 61 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:39,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 154 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:39,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2023-11-23 20:40:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1413. [2023-11-23 20:40:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1412 states have (on average 2.891643059490085) internal successors, (4083), 1412 states have internal predecessors, (4083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 4083 transitions. [2023-11-23 20:40:39,312 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 4083 transitions. Word has length 28 [2023-11-23 20:40:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:39,312 INFO L495 AbstractCegarLoop]: Abstraction has 1413 states and 4083 transitions. [2023-11-23 20:40:39,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:39,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 4083 transitions. [2023-11-23 20:40:39,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 20:40:39,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:39,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:39,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 20:40:39,316 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:39,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:39,317 INFO L85 PathProgramCache]: Analyzing trace with hash -617881498, now seen corresponding path program 1 times [2023-11-23 20:40:39,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:39,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981120671] [2023-11-23 20:40:39,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:39,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:39,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:39,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981120671] [2023-11-23 20:40:39,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981120671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:39,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:39,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:40:39,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184985334] [2023-11-23 20:40:39,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:39,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:40:39,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:39,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:40:39,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:40:39,548 INFO L87 Difference]: Start difference. First operand 1413 states and 4083 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:39,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:39,673 INFO L93 Difference]: Finished difference Result 1061 states and 3027 transitions. [2023-11-23 20:40:39,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:40:39,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-23 20:40:39,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:39,675 INFO L225 Difference]: With dead ends: 1061 [2023-11-23 20:40:39,675 INFO L226 Difference]: Without dead ends: 730 [2023-11-23 20:40:39,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:40:39,676 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 139 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:39,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 38 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:39,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-11-23 20:40:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 666. [2023-11-23 20:40:39,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 2.8090225563909774) internal successors, (1868), 665 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1868 transitions. [2023-11-23 20:40:39,690 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1868 transitions. Word has length 28 [2023-11-23 20:40:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:39,691 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1868 transitions. [2023-11-23 20:40:39,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:39,691 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1868 transitions. [2023-11-23 20:40:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-23 20:40:39,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:39,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:39,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 20:40:39,694 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:39,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:39,694 INFO L85 PathProgramCache]: Analyzing trace with hash 210280387, now seen corresponding path program 1 times [2023-11-23 20:40:39,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:39,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126280320] [2023-11-23 20:40:39,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:39,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:40,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:40,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126280320] [2023-11-23 20:40:40,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126280320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:40,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:40,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 20:40:40,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659225616] [2023-11-23 20:40:40,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:40,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 20:40:40,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 20:40:40,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:40:40,199 INFO L87 Difference]: Start difference. First operand 666 states and 1868 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:40,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:40,487 INFO L93 Difference]: Finished difference Result 1010 states and 2844 transitions. [2023-11-23 20:40:40,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:40:40,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-23 20:40:40,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:40,488 INFO L225 Difference]: With dead ends: 1010 [2023-11-23 20:40:40,489 INFO L226 Difference]: Without dead ends: 429 [2023-11-23 20:40:40,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-23 20:40:40,489 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 71 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:40,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 126 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:40,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-11-23 20:40:40,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 381. [2023-11-23 20:40:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 2.705263157894737) internal successors, (1028), 380 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:40,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1028 transitions. [2023-11-23 20:40:40,498 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1028 transitions. Word has length 33 [2023-11-23 20:40:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:40,498 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 1028 transitions. [2023-11-23 20:40:40,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1028 transitions. [2023-11-23 20:40:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-23 20:40:40,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:40,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:40,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-23 20:40:40,501 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:40,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:40,501 INFO L85 PathProgramCache]: Analyzing trace with hash 614058063, now seen corresponding path program 2 times [2023-11-23 20:40:40,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:40,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175928084] [2023-11-23 20:40:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:40,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:41,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:41,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175928084] [2023-11-23 20:40:41,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175928084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:41,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:41,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 20:40:41,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111976180] [2023-11-23 20:40:41,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:41,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 20:40:41,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:41,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 20:40:41,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 20:40:41,691 INFO L87 Difference]: Start difference. First operand 381 states and 1028 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:41,970 INFO L93 Difference]: Finished difference Result 517 states and 1384 transitions. [2023-11-23 20:40:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:40:41,970 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-23 20:40:41,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:41,971 INFO L225 Difference]: With dead ends: 517 [2023-11-23 20:40:41,971 INFO L226 Difference]: Without dead ends: 273 [2023-11-23 20:40:41,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-23 20:40:41,972 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 55 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:41,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 196 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:41,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-23 20:40:41,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-11-23 20:40:41,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 2.5220588235294117) internal successors, (686), 272 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 686 transitions. [2023-11-23 20:40:41,978 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 686 transitions. Word has length 33 [2023-11-23 20:40:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:41,979 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 686 transitions. [2023-11-23 20:40:41,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 686 transitions. [2023-11-23 20:40:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-23 20:40:41,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:41,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:41,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-23 20:40:41,981 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:41,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:41,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2063259025, now seen corresponding path program 3 times [2023-11-23 20:40:41,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:41,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212369435] [2023-11-23 20:40:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:41,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:40:42,032 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:40:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:40:42,126 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:40:42,127 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:40:42,128 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-23 20:40:42,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONMEMORY_LEAK (11 of 13 remaining) [2023-11-23 20:40:42,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-23 20:40:42,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-23 20:40:42,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-23 20:40:42,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-23 20:40:42,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-23 20:40:42,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-23 20:40:42,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 13 remaining) [2023-11-23 20:40:42,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 13 remaining) [2023-11-23 20:40:42,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-23 20:40:42,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-23 20:40:42,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-23 20:40:42,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-23 20:40:42,137 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:42,142 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 20:40:42,142 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:40:42,214 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated [2023-11-23 20:40:42,218 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-23 20:40:42,220 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-23 20:40:42,240 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet0 [2023-11-23 20:40:42,251 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet0 [2023-11-23 20:40:42,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:40:42 BasicIcfg [2023-11-23 20:40:42,267 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:40:42,267 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:40:42,267 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:40:42,268 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:40:42,268 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:17" (3/4) ... [2023-11-23 20:40:42,270 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:40:42,271 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:40:42,272 INFO L158 Benchmark]: Toolchain (without parser) took 26723.53ms. Allocated memory was 136.3MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 102.7MB in the beginning and 558.2MB in the end (delta: -455.4MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-11-23 20:40:42,272 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 136.3MB. Free memory was 106.5MB in the beginning and 106.4MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:40:42,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 705.22ms. Allocated memory is still 136.3MB. Free memory was 102.7MB in the beginning and 79.1MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 20:40:42,272 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.62ms. Allocated memory is still 136.3MB. Free memory was 79.1MB in the beginning and 76.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:40:42,273 INFO L158 Benchmark]: Boogie Preprocessor took 36.64ms. Allocated memory is still 136.3MB. Free memory was 76.5MB in the beginning and 74.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:40:42,273 INFO L158 Benchmark]: RCFGBuilder took 950.25ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 74.4MB in the beginning and 106.3MB in the end (delta: -31.9MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2023-11-23 20:40:42,276 INFO L158 Benchmark]: TraceAbstraction took 24942.49ms. Allocated memory was 163.6MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 106.3MB in the beginning and 558.2MB in the end (delta: -451.9MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-23 20:40:42,276 INFO L158 Benchmark]: Witness Printer took 3.80ms. Allocated memory is still 1.8GB. Free memory is still 558.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:40:42,287 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 136.3MB. Free memory was 106.5MB in the beginning and 106.4MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 705.22ms. Allocated memory is still 136.3MB. Free memory was 102.7MB in the beginning and 79.1MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.62ms. Allocated memory is still 136.3MB. Free memory was 79.1MB in the beginning and 76.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.64ms. Allocated memory is still 136.3MB. Free memory was 76.5MB in the beginning and 74.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 950.25ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 74.4MB in the beginning and 106.3MB in the end (delta: -31.9MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * TraceAbstraction took 24942.49ms. Allocated memory was 163.6MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 106.3MB in the beginning and 558.2MB in the end (delta: -451.9MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 3.80ms. Allocated memory is still 1.8GB. Free memory is still 558.2MB. 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: IdentifierExpression #t~pre3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet0 - 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: 17]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 17. Possible FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L712] 0 _Bool main$tmp_guard0; [L713] 0 _Bool main$tmp_guard1; [L715] 0 int x = 0; [L717] 0 int y = 0; [L718] 0 _Bool y$flush_delayed; [L719] 0 int y$mem_tmp; [L720] 0 _Bool y$r_buff0_thd0; [L721] 0 _Bool y$r_buff0_thd1; [L722] 0 _Bool y$r_buff0_thd2; [L723] 0 _Bool y$r_buff0_thd3; [L724] 0 _Bool y$r_buff1_thd0; [L725] 0 _Bool y$r_buff1_thd1; [L726] 0 _Bool y$r_buff1_thd2; [L727] 0 _Bool y$r_buff1_thd3; [L728] 0 _Bool y$read_delayed; [L729] 0 int *y$read_delayed_var; [L730] 0 int y$w_buff0; [L731] 0 _Bool y$w_buff0_used; [L732] 0 int y$w_buff1; [L733] 0 _Bool y$w_buff1_used; [L735] 0 int z = 0; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L813] 0 pthread_t t1492; [L814] FCALL, FORK 0 pthread_create(&t1492, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1492={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L815] 0 pthread_t t1493; [L816] FCALL, FORK 0 pthread_create(&t1493, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1492={5:0}, t1493={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L817] 0 pthread_t t1494; [L818] FCALL, FORK 0 pthread_create(&t1494, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1492={5:0}, t1493={6:0}, t1494={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L776] 3 y$w_buff1 = y$w_buff0 [L777] 3 y$w_buff0 = 2 [L778] 3 y$w_buff1_used = y$w_buff0_used [L779] 3 y$w_buff0_used = (_Bool)1 [L780] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L780] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L781] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L782] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L783] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L784] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L785] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L788] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L741] 1 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L744] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L749] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L756] 2 x = 2 VAL [__unbuffered_cnt=1, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L759] 2 y = 1 VAL [__unbuffered_cnt=1, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L762] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L763] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L764] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L765] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L766] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [__unbuffered_cnt=1, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L769] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L791] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L792] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L793] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L794] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L795] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=2, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L798] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L820] 0 main$tmp_guard0 = __unbuffered_cnt == 3 VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1492={5:0}, t1493={6:0}, t1494={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L822] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L822] RET 0 assume_abort_if_not(main$tmp_guard0) [L824] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L825] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L826] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L827] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L828] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1492={5:0}, t1493={6:0}, t1494={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L831] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L832] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L833] 0 y$flush_delayed = weak$$choice2 [L834] 0 y$mem_tmp = y [L835] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L836] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L837] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L838] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L839] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L840] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L841] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L842] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0) [L843] 0 y = y$flush_delayed ? y$mem_tmp : y [L844] 0 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1492={5:0}, t1493={6:0}, t1494={3:0}, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L846] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] CALL 0 reach_error() [L17] COND FALSE 0 !(0) VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L17] 0 __assert_fail ("0", "mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] - UnprovableResult [Line: 17]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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: 811]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 816]: 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: 814]: 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: 818]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 77 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 24.7s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.2s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1972 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1972 mSDsluCounter, 3453 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2583 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3239 IncrementalHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 870 mSDtfsCounter, 3239 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5920occurred in iteration=0, InterpolantAutomatonStates: 167, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 25 MinimizatonAttempts, 3668 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 509 NumberOfCodeBlocks, 509 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 451 ConstructedInterpolants, 0 QuantifiedInterpolants, 5196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 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 [2023-11-23 20:40:42,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire --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 0a03a5fc32da65217c1f578a6fea0c2c0e07a09fd6b8159429f8d1aa4c1c45a8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:40:44,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:40:44,923 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-23 20:40:44,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:40:44,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:40:44,963 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:40:44,964 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:40:44,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:40:44,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:40:44,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:40:44,966 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:40:44,967 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:40:44,967 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:40:44,968 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:40:44,968 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:40:44,969 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:40:44,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:40:44,970 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:40:44,971 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:40:44,972 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:40:44,972 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:40:44,973 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:40:44,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:40:44,974 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 20:40:44,974 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 20:40:44,975 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 20:40:44,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:40:44,976 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:40:44,976 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:40:44,976 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:40:44,977 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:40:44,977 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:40:44,978 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:40:44,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:40:44,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 20:40:44,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:40:44,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:40:44,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:40:44,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:40:44,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:40:44,980 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:40:44,980 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:40:44,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:40:44,981 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:40:44,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:40:44,981 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_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a03a5fc32da65217c1f578a6fea0c2c0e07a09fd6b8159429f8d1aa4c1c45a8 [2023-11-23 20:40:45,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:40:45,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:40:45,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:40:45,394 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:40:45,395 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:40:45,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-23 20:40:48,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:40:48,981 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:40:48,982 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/sv-benchmarks/c/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-23 20:40:49,019 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/data/c7dd1797e/62497376acc34ed48ec857a93f41c240/FLAG60b167b0c [2023-11-23 20:40:49,033 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/data/c7dd1797e/62497376acc34ed48ec857a93f41c240 [2023-11-23 20:40:49,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:40:49,037 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:40:49,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:40:49,039 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:40:49,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:40:49,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:49" (1/1) ... [2023-11-23 20:40:49,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335b6903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49, skipping insertion in model container [2023-11-23 20:40:49,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:49" (1/1) ... [2023-11-23 20:40:49,105 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:40:49,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:40:49,662 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:40:49,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:40:49,758 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:40:49,758 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:40:49,766 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:40:49,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49 WrapperNode [2023-11-23 20:40:49,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:40:49,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:40:49,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:40:49,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:40:49,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49" (1/1) ... [2023-11-23 20:40:49,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49" (1/1) ... [2023-11-23 20:40:49,843 INFO L138 Inliner]: procedures = 179, calls = 55, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 150 [2023-11-23 20:40:49,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:40:49,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:40:49,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:40:49,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:40:49,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49" (1/1) ... [2023-11-23 20:40:49,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49" (1/1) ... [2023-11-23 20:40:49,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49" (1/1) ... [2023-11-23 20:40:49,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49" (1/1) ... [2023-11-23 20:40:49,886 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49" (1/1) ... [2023-11-23 20:40:49,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49" (1/1) ... [2023-11-23 20:40:49,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49" (1/1) ... [2023-11-23 20:40:49,917 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49" (1/1) ... [2023-11-23 20:40:49,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:40:49,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:40:49,927 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:40:49,927 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:40:49,928 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49" (1/1) ... [2023-11-23 20:40:49,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:40:49,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:49,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:40:49,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:40:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 20:40:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:40:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:40:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:40:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 20:40:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:40:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 20:40:50,011 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 20:40:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 20:40:50,012 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 20:40:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 20:40:50,012 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 20:40:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 20:40:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:40:50,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:40:50,015 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 20:40:50,246 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:40:50,249 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:40:50,740 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:40:50,966 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:40:50,966 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:40:50,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:50 BoogieIcfgContainer [2023-11-23 20:40:50,967 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:40:50,970 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:40:50,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:40:50,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:40:50,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:40:49" (1/3) ... [2023-11-23 20:40:50,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bfdce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:40:50, skipping insertion in model container [2023-11-23 20:40:50,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:49" (2/3) ... [2023-11-23 20:40:50,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bfdce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:40:50, skipping insertion in model container [2023-11-23 20:40:50,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:50" (3/3) ... [2023-11-23 20:40:50,976 INFO L112 eAbstractionObserver]: Analyzing ICFG mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-11-23 20:40:50,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:40:50,994 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-23 20:40:50,994 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 20:40:51,046 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 20:40:51,074 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 53 transitions, 118 flow [2023-11-23 20:40:51,456 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5920 states, 5909 states have (on average 3.6083939752919276) internal successors, (21322), 5919 states have internal predecessors, (21322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:51,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:40:51,492 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;@2e04f8b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:40:51,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-23 20:40:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 5920 states, 5909 states have (on average 3.6083939752919276) internal successors, (21322), 5919 states have internal predecessors, (21322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:51,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 20:40:51,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:51,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 20:40:51,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:51,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:51,527 INFO L85 PathProgramCache]: Analyzing trace with hash 12209, now seen corresponding path program 1 times [2023-11-23 20:40:51,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:51,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25500551] [2023-11-23 20:40:51,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:51,543 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 [2023-11-23 20:40:51,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:51,546 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 20:40:51,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:51,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:40:51,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:51,717 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 [2023-11-23 20:40:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:51,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:51,730 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:51,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25500551] [2023-11-23 20:40:51,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25500551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:51,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:51,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:40:51,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029210489] [2023-11-23 20:40:51,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:51,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:51,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:51,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:51,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:51,788 INFO L87 Difference]: Start difference. First operand has 5920 states, 5909 states have (on average 3.6083939752919276) internal successors, (21322), 5919 states have internal predecessors, (21322), 0 states have call successors, (0), 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) [2023-11-23 20:40:52,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:52,070 INFO L93 Difference]: Finished difference Result 5527 states and 19130 transitions. [2023-11-23 20:40:52,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:52,074 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 [2023-11-23 20:40:52,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:52,162 INFO L225 Difference]: With dead ends: 5527 [2023-11-23 20:40:52,162 INFO L226 Difference]: Without dead ends: 5527 [2023-11-23 20:40:52,163 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 [2023-11-23 20:40:52,167 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:52,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 31 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:52,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5527 states. [2023-11-23 20:40:52,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5527 to 5527. [2023-11-23 20:40:52,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5527 states, 5517 states have (on average 3.467464201558818) internal successors, (19130), 5526 states have internal predecessors, (19130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5527 states to 5527 states and 19130 transitions. [2023-11-23 20:40:52,580 INFO L78 Accepts]: Start accepts. Automaton has 5527 states and 19130 transitions. Word has length 2 [2023-11-23 20:40:52,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:52,580 INFO L495 AbstractCegarLoop]: Abstraction has 5527 states and 19130 transitions. [2023-11-23 20:40:52,580 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) [2023-11-23 20:40:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 5527 states and 19130 transitions. [2023-11-23 20:40:52,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 20:40:52,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:52,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 20:40:52,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:52,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:52,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:52,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:52,785 INFO L85 PathProgramCache]: Analyzing trace with hash 12210, now seen corresponding path program 1 times [2023-11-23 20:40:52,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:52,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770707834] [2023-11-23 20:40:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:52,786 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 [2023-11-23 20:40:52,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:52,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 20:40:52,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:52,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:40:52,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:52,970 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 [2023-11-23 20:40:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:52,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:52,983 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:52,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770707834] [2023-11-23 20:40:52,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770707834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:52,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:52,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:40:52,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546185971] [2023-11-23 20:40:52,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:52,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:52,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:52,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:52,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:52,988 INFO L87 Difference]: Start difference. First operand 5527 states and 19130 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) [2023-11-23 20:40:53,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:53,185 INFO L93 Difference]: Finished difference Result 5526 states and 19129 transitions. [2023-11-23 20:40:53,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:53,186 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 [2023-11-23 20:40:53,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:53,259 INFO L225 Difference]: With dead ends: 5526 [2023-11-23 20:40:53,259 INFO L226 Difference]: Without dead ends: 5526 [2023-11-23 20:40:53,260 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 [2023-11-23 20:40:53,261 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:53,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 32 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:53,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2023-11-23 20:40:53,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5526. [2023-11-23 20:40:53,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 5517 states have (on average 3.467282943628784) internal successors, (19129), 5525 states have internal predecessors, (19129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:53,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 19129 transitions. [2023-11-23 20:40:53,604 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 19129 transitions. Word has length 2 [2023-11-23 20:40:53,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:53,605 INFO L495 AbstractCegarLoop]: Abstraction has 5526 states and 19129 transitions. [2023-11-23 20:40:53,606 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) [2023-11-23 20:40:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 19129 transitions. [2023-11-23 20:40:53,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 20:40:53,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:53,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 20:40:53,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:53,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:53,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:53,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:53,813 INFO L85 PathProgramCache]: Analyzing trace with hash 364083643, now seen corresponding path program 1 times [2023-11-23 20:40:53,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:53,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513724562] [2023-11-23 20:40:53,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:53,814 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 [2023-11-23 20:40:53,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:53,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 20:40:53,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:53,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:40:53,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:53,923 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 [2023-11-23 20:40:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:53,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:53,932 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:53,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513724562] [2023-11-23 20:40:53,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513724562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:53,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:53,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:53,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753380243] [2023-11-23 20:40:53,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:53,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:53,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:53,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:53,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:53,935 INFO L87 Difference]: Start difference. First operand 5526 states and 19129 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:54,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:54,271 INFO L93 Difference]: Finished difference Result 5519 states and 19116 transitions. [2023-11-23 20:40:54,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:54,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 20:40:54,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:54,365 INFO L225 Difference]: With dead ends: 5519 [2023-11-23 20:40:54,365 INFO L226 Difference]: Without dead ends: 5519 [2023-11-23 20:40:54,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:54,367 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 36 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:54,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 36 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2023-11-23 20:40:54,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5519. [2023-11-23 20:40:54,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5519 states, 5511 states have (on average 3.4686989657049536) internal successors, (19116), 5518 states have internal predecessors, (19116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 19116 transitions. [2023-11-23 20:40:54,650 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 19116 transitions. Word has length 5 [2023-11-23 20:40:54,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:54,650 INFO L495 AbstractCegarLoop]: Abstraction has 5519 states and 19116 transitions. [2023-11-23 20:40:54,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 19116 transitions. [2023-11-23 20:40:54,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 20:40:54,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:54,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 20:40:54,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:54,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:54,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:54,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:54,868 INFO L85 PathProgramCache]: Analyzing trace with hash 364083644, now seen corresponding path program 1 times [2023-11-23 20:40:54,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:54,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022052149] [2023-11-23 20:40:54,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:54,869 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 [2023-11-23 20:40:54,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:54,871 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 20:40:54,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:54,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:40:54,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:54,981 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 [2023-11-23 20:40:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:54,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:54,991 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:54,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022052149] [2023-11-23 20:40:54,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022052149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:54,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:54,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:54,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720147685] [2023-11-23 20:40:54,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:54,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:54,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:54,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:54,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:54,997 INFO L87 Difference]: Start difference. First operand 5519 states and 19116 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:55,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:55,235 INFO L93 Difference]: Finished difference Result 5512 states and 19103 transitions. [2023-11-23 20:40:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:55,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 20:40:55,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:55,264 INFO L225 Difference]: With dead ends: 5512 [2023-11-23 20:40:55,265 INFO L226 Difference]: Without dead ends: 5512 [2023-11-23 20:40:55,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:55,266 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 35 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:55,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 37 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:55,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5512 states. [2023-11-23 20:40:55,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5512 to 5512. [2023-11-23 20:40:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5512 states, 5505 states have (on average 3.4701180744777473) internal successors, (19103), 5511 states have internal predecessors, (19103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:55,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5512 states to 5512 states and 19103 transitions. [2023-11-23 20:40:55,494 INFO L78 Accepts]: Start accepts. Automaton has 5512 states and 19103 transitions. Word has length 5 [2023-11-23 20:40:55,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:55,494 INFO L495 AbstractCegarLoop]: Abstraction has 5512 states and 19103 transitions. [2023-11-23 20:40:55,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:55,495 INFO L276 IsEmpty]: Start isEmpty. Operand 5512 states and 19103 transitions. [2023-11-23 20:40:55,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:40:55,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:55,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:55,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:55,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:55,700 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:55,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:55,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1623749041, now seen corresponding path program 1 times [2023-11-23 20:40:55,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:55,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582373995] [2023-11-23 20:40:55,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:55,704 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 [2023-11-23 20:40:55,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:55,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 20:40:55,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:55,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:40:55,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:55,859 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 [2023-11-23 20:40:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:55,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:55,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:55,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582373995] [2023-11-23 20:40:55,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582373995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:55,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:55,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:55,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335151646] [2023-11-23 20:40:55,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:55,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:55,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:55,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:55,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:55,869 INFO L87 Difference]: Start difference. First operand 5512 states and 19103 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:56,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:56,074 INFO L93 Difference]: Finished difference Result 5463 states and 18970 transitions. [2023-11-23 20:40:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:56,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-23 20:40:56,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:56,107 INFO L225 Difference]: With dead ends: 5463 [2023-11-23 20:40:56,108 INFO L226 Difference]: Without dead ends: 5463 [2023-11-23 20:40:56,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:56,110 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:56,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 40 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5463 states. [2023-11-23 20:40:56,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5463 to 5463. [2023-11-23 20:40:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 5457 states have (on average 3.4762690122778084) internal successors, (18970), 5462 states have internal predecessors, (18970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 18970 transitions. [2023-11-23 20:40:56,339 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 18970 transitions. Word has length 8 [2023-11-23 20:40:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:56,340 INFO L495 AbstractCegarLoop]: Abstraction has 5463 states and 18970 transitions. [2023-11-23 20:40:56,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:56,340 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 18970 transitions. [2023-11-23 20:40:56,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:40:56,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:56,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:56,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:56,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:56,544 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-23 20:40:56,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:56,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1623749042, now seen corresponding path program 1 times [2023-11-23 20:40:56,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:56,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290417861] [2023-11-23 20:40:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:56,545 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 [2023-11-23 20:40:56,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:56,546 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 20:40:56,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a775d0c-ca74-4a33-963b-3c86e719f83b/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:40:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:56,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:40:56,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:56,754 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 [2023-11-23 20:40:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:56,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:56,766 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:56,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290417861] [2023-11-23 20:40:56,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290417861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:56,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:56,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:56,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214171100] [2023-11-23 20:40:56,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:56,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:56,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:56,769 INFO L87 Difference]: Start difference. First operand 5463 states and 18970 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:56,902 INFO L93 Difference]: Finished difference Result 5414 states and 18837 transitions. [2023-11-23 20:40:56,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:56,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-23 20:40:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted.