./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/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_585aed72-f61b-4b65-b263-1bb0d6263440/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/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_585aed72-f61b-4b65-b263-1bb0d6263440/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 d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:07:59,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:07:59,199 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 21:07:59,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:07:59,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:07:59,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:07:59,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:07:59,253 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:07:59,254 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:07:59,259 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:07:59,259 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:07:59,260 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:07:59,261 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:07:59,263 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:07:59,263 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:07:59,264 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:07:59,264 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:07:59,265 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:07:59,265 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:07:59,266 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:07:59,266 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:07:59,267 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:07:59,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:07:59,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:07:59,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:07:59,269 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:07:59,270 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:07:59,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:07:59,271 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:07:59,271 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:07:59,272 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:07:59,273 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:07:59,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:07:59,273 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:07:59,274 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:07:59,274 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:07:59,274 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:07:59,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:07:59,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:07:59,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:07:59,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:07:59,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:07:59,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:07:59,276 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:07:59,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:07:59,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:07:59,277 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:07:59,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:07:59,278 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_585aed72-f61b-4b65-b263-1bb0d6263440/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 [2023-11-23 21:07:59,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:07:59,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:07:59,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:07:59,586 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:07:59,587 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:07:59,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-23 21:08:02,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:03,045 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:03,046 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-23 21:08:03,058 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/bin/utaipan-verify-mE87zJ7Ire/data/07e704ba1/afc6be1994e3423381b912df76c9f10c/FLAG6f78525bb [2023-11-23 21:08:03,073 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/bin/utaipan-verify-mE87zJ7Ire/data/07e704ba1/afc6be1994e3423381b912df76c9f10c [2023-11-23 21:08:03,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:03,077 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:03,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:03,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:03,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:03,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c2e304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03, skipping insertion in model container [2023-11-23 21:08:03,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,132 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:03,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:03,334 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:08:03,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:03,373 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:03,373 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:08:03,382 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:08:03,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03 WrapperNode [2023-11-23 21:08:03,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:03,384 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:03,384 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:08:03,384 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:08:03,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,434 INFO L138 Inliner]: procedures = 23, calls = 71, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 211 [2023-11-23 21:08:03,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:03,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:08:03,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:08:03,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:08:03,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,450 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,450 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:08:03,475 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:08:03,475 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:08:03,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:08:03,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:03,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:03,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:08:03,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:08:03,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:08:03,650 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 21:08:03,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 21:08:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 21:08:03,654 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 21:08:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 21:08:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 21:08:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-23 21:08:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-23 21:08:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:08:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:08:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:08:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:08:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:08:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:08:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:08:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:08:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:08:03,660 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 21:08:03,853 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:08:03,856 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:08:04,340 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:08:04,752 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:08:04,752 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:08:04,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:04 BoogieIcfgContainer [2023-11-23 21:08:04,753 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:08:04,757 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:08:04,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:08:04,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:08:04,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:03" (1/3) ... [2023-11-23 21:08:04,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c711cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:04, skipping insertion in model container [2023-11-23 21:08:04,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03" (2/3) ... [2023-11-23 21:08:04,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c711cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:04, skipping insertion in model container [2023-11-23 21:08:04,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:04" (3/3) ... [2023-11-23 21:08:04,766 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-11-23 21:08:04,787 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:08:04,788 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-23 21:08:04,788 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:08:04,866 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-23 21:08:04,913 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 74 transitions, 176 flow [2023-11-23 21:08:05,949 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 18005 states, 17987 states have (on average 4.058542280535943) internal successors, (73001), 18004 states have internal predecessors, (73001), 0 states have call successors, (0), 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 21:08:05,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:08:05,985 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;@4caa8966, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:08:05,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-23 21:08:06,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 18005 states, 17987 states have (on average 4.058542280535943) internal successors, (73001), 18004 states have internal predecessors, (73001), 0 states have call successors, (0), 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 21:08:06,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 21:08:06,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:06,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 21:08:06,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:06,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:06,164 INFO L85 PathProgramCache]: Analyzing trace with hash 14374, now seen corresponding path program 1 times [2023-11-23 21:08:06,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:06,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378513728] [2023-11-23 21:08:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:06,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:06,720 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 21:08:06,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:06,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378513728] [2023-11-23 21:08:06,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378513728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:06,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:06,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:08:06,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661884176] [2023-11-23 21:08:06,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:06,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:06,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:06,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:06,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:06,820 INFO L87 Difference]: Start difference. First operand has 18005 states, 17987 states have (on average 4.058542280535943) internal successors, (73001), 18004 states have internal predecessors, (73001), 0 states have call successors, (0), 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 21:08:07,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:07,369 INFO L93 Difference]: Finished difference Result 15258 states and 60797 transitions. [2023-11-23 21:08:07,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:07,372 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 21:08:07,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:07,721 INFO L225 Difference]: With dead ends: 15258 [2023-11-23 21:08:07,721 INFO L226 Difference]: Without dead ends: 15258 [2023-11-23 21:08:07,723 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 21:08:07,727 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:07,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 19 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:08:07,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15258 states. [2023-11-23 21:08:08,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15258 to 15258. [2023-11-23 21:08:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15258 states, 15243 states have (on average 3.9885193203437646) internal successors, (60797), 15257 states have internal predecessors, (60797), 0 states have call successors, (0), 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 21:08:08,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15258 states to 15258 states and 60797 transitions. [2023-11-23 21:08:08,842 INFO L78 Accepts]: Start accepts. Automaton has 15258 states and 60797 transitions. Word has length 2 [2023-11-23 21:08:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:08,843 INFO L495 AbstractCegarLoop]: Abstraction has 15258 states and 60797 transitions. [2023-11-23 21:08:08,843 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 21:08:08,843 INFO L276 IsEmpty]: Start isEmpty. Operand 15258 states and 60797 transitions. [2023-11-23 21:08:08,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 21:08:08,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:08,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 21:08:08,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:08:08,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:08,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:08,850 INFO L85 PathProgramCache]: Analyzing trace with hash 14375, now seen corresponding path program 1 times [2023-11-23 21:08:08,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:08,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860338963] [2023-11-23 21:08:08,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:08,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:09,122 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 21:08:09,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:09,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860338963] [2023-11-23 21:08:09,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860338963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:09,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:09,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:08:09,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201923581] [2023-11-23 21:08:09,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:09,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:09,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:09,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:09,127 INFO L87 Difference]: Start difference. First operand 15258 states and 60797 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 21:08:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:09,733 INFO L93 Difference]: Finished difference Result 12513 states and 48595 transitions. [2023-11-23 21:08:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:09,734 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 21:08:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:09,848 INFO L225 Difference]: With dead ends: 12513 [2023-11-23 21:08:09,848 INFO L226 Difference]: Without dead ends: 12513 [2023-11-23 21:08:09,853 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 21:08:09,855 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:09,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 19 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:09,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12513 states. [2023-11-23 21:08:10,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12513 to 12513. [2023-11-23 21:08:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12513 states, 12500 states have (on average 3.8876) internal successors, (48595), 12512 states have internal predecessors, (48595), 0 states have call successors, (0), 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 21:08:10,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12513 states to 12513 states and 48595 transitions. [2023-11-23 21:08:10,607 INFO L78 Accepts]: Start accepts. Automaton has 12513 states and 48595 transitions. Word has length 2 [2023-11-23 21:08:10,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:10,607 INFO L495 AbstractCegarLoop]: Abstraction has 12513 states and 48595 transitions. [2023-11-23 21:08:10,607 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 21:08:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 12513 states and 48595 transitions. [2023-11-23 21:08:10,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:08:10,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:10,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:08:10,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:08:10,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:10,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:10,611 INFO L85 PathProgramCache]: Analyzing trace with hash 428666861, now seen corresponding path program 1 times [2023-11-23 21:08:10,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:10,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60712238] [2023-11-23 21:08:10,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:10,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:10,812 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 21:08:10,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:10,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60712238] [2023-11-23 21:08:10,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60712238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:10,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:10,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:08:10,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84494023] [2023-11-23 21:08:10,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:10,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:10,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:10,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:10,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:10,815 INFO L87 Difference]: Start difference. First operand 12513 states and 48595 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:11,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:11,144 INFO L93 Difference]: Finished difference Result 12162 states and 47355 transitions. [2023-11-23 21:08:11,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:11,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 21:08:11,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:11,215 INFO L225 Difference]: With dead ends: 12162 [2023-11-23 21:08:11,216 INFO L226 Difference]: Without dead ends: 12162 [2023-11-23 21:08:11,216 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 21:08:11,217 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:11,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 17 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:08:11,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12162 states. [2023-11-23 21:08:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12162 to 12162. [2023-11-23 21:08:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12162 states, 12151 states have (on average 3.897210106164102) internal successors, (47355), 12161 states have internal predecessors, (47355), 0 states have call successors, (0), 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 21:08:11,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12162 states to 12162 states and 47355 transitions. [2023-11-23 21:08:11,838 INFO L78 Accepts]: Start accepts. Automaton has 12162 states and 47355 transitions. Word has length 5 [2023-11-23 21:08:11,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:11,839 INFO L495 AbstractCegarLoop]: Abstraction has 12162 states and 47355 transitions. [2023-11-23 21:08:11,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:11,839 INFO L276 IsEmpty]: Start isEmpty. Operand 12162 states and 47355 transitions. [2023-11-23 21:08:11,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:08:11,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:11,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:08:11,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:08:11,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:11,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:11,841 INFO L85 PathProgramCache]: Analyzing trace with hash 428666862, now seen corresponding path program 1 times [2023-11-23 21:08:11,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:11,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621431459] [2023-11-23 21:08:11,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:11,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:12,201 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 21:08:12,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:12,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621431459] [2023-11-23 21:08:12,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621431459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:12,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:12,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:08:12,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511409816] [2023-11-23 21:08:12,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:12,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:12,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:12,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:12,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:12,204 INFO L87 Difference]: Start difference. First operand 12162 states and 47355 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:12,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:12,399 INFO L93 Difference]: Finished difference Result 11811 states and 46115 transitions. [2023-11-23 21:08:12,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:12,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 21:08:12,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:12,612 INFO L225 Difference]: With dead ends: 11811 [2023-11-23 21:08:12,612 INFO L226 Difference]: Without dead ends: 11811 [2023-11-23 21:08:12,612 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 21:08:12,624 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:12,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 17 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:08:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11811 states. [2023-11-23 21:08:13,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11811 to 11811. [2023-11-23 21:08:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11811 states, 11802 states have (on average 3.9073885782070836) internal successors, (46115), 11810 states have internal predecessors, (46115), 0 states have call successors, (0), 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 21:08:13,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11811 states to 11811 states and 46115 transitions. [2023-11-23 21:08:13,264 INFO L78 Accepts]: Start accepts. Automaton has 11811 states and 46115 transitions. Word has length 5 [2023-11-23 21:08:13,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:13,265 INFO L495 AbstractCegarLoop]: Abstraction has 11811 states and 46115 transitions. [2023-11-23 21:08:13,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 11811 states and 46115 transitions. [2023-11-23 21:08:13,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:08:13,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:13,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:13,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:08:13,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:13,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1477139699, now seen corresponding path program 1 times [2023-11-23 21:08:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:13,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754694516] [2023-11-23 21:08:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:13,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:13,340 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 21:08:13,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:13,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754694516] [2023-11-23 21:08:13,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754694516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:13,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:13,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:08:13,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299271177] [2023-11-23 21:08:13,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:13,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:13,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:13,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:13,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:13,342 INFO L87 Difference]: Start difference. First operand 11811 states and 46115 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 21:08:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:13,516 INFO L93 Difference]: Finished difference Result 11706 states and 45829 transitions. [2023-11-23 21:08:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:13,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 21:08:13,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:13,577 INFO L225 Difference]: With dead ends: 11706 [2023-11-23 21:08:13,577 INFO L226 Difference]: Without dead ends: 11706 [2023-11-23 21:08:13,578 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 21:08:13,579 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:13,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 15 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:08:13,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11706 states. [2023-11-23 21:08:14,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11706 to 11706. [2023-11-23 21:08:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11706 states, 11699 states have (on average 3.917343362680571) internal successors, (45829), 11705 states have internal predecessors, (45829), 0 states have call successors, (0), 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 21:08:14,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11706 states to 11706 states and 45829 transitions. [2023-11-23 21:08:14,393 INFO L78 Accepts]: Start accepts. Automaton has 11706 states and 45829 transitions. Word has length 8 [2023-11-23 21:08:14,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:14,394 INFO L495 AbstractCegarLoop]: Abstraction has 11706 states and 45829 transitions. [2023-11-23 21:08:14,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 21:08:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 11706 states and 45829 transitions. [2023-11-23 21:08:14,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:08:14,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:14,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:14,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:08:14,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:14,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:14,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1477139700, now seen corresponding path program 1 times [2023-11-23 21:08:14,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:14,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7244439] [2023-11-23 21:08:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:14,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:14,502 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 21:08:14,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:14,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7244439] [2023-11-23 21:08:14,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7244439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:14,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:14,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:08:14,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033924968] [2023-11-23 21:08:14,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:14,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:14,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:14,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:14,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:14,505 INFO L87 Difference]: Start difference. First operand 11706 states and 45829 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 21:08:14,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:14,683 INFO L93 Difference]: Finished difference Result 11601 states and 45543 transitions. [2023-11-23 21:08:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:14,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 21:08:14,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:14,745 INFO L225 Difference]: With dead ends: 11601 [2023-11-23 21:08:14,746 INFO L226 Difference]: Without dead ends: 11601 [2023-11-23 21:08:14,746 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 21:08:14,747 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:14,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 15 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:08:14,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11601 states. [2023-11-23 21:08:15,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11601 to 11601. [2023-11-23 21:08:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11601 states, 11596 states have (on average 3.9274749913763367) internal successors, (45543), 11600 states have internal predecessors, (45543), 0 states have call successors, (0), 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 21:08:15,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11601 states to 11601 states and 45543 transitions. [2023-11-23 21:08:15,416 INFO L78 Accepts]: Start accepts. Automaton has 11601 states and 45543 transitions. Word has length 8 [2023-11-23 21:08:15,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:15,417 INFO L495 AbstractCegarLoop]: Abstraction has 11601 states and 45543 transitions. [2023-11-23 21:08:15,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 21:08:15,417 INFO L276 IsEmpty]: Start isEmpty. Operand 11601 states and 45543 transitions. [2023-11-23 21:08:15,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:08:15,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:15,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:15,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:08:15,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:15,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash -765687726, now seen corresponding path program 1 times [2023-11-23 21:08:15,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:15,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172482684] [2023-11-23 21:08:15,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:15,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:15,506 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 21:08:15,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:15,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172482684] [2023-11-23 21:08:15,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172482684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:15,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:15,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:08:15,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630195088] [2023-11-23 21:08:15,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:15,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:15,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:15,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:15,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:15,510 INFO L87 Difference]: Start difference. First operand 11601 states and 45543 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 21:08:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:15,733 INFO L93 Difference]: Finished difference Result 11202 states and 44123 transitions. [2023-11-23 21:08:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:15,734 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 21:08:15,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:15,804 INFO L225 Difference]: With dead ends: 11202 [2023-11-23 21:08:15,805 INFO L226 Difference]: Without dead ends: 11202 [2023-11-23 21:08:15,805 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 21:08:15,807 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:15,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 13 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:08:15,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11202 states. [2023-11-23 21:08:16,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11202 to 11202. [2023-11-23 21:08:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11202 states, 11199 states have (on average 3.9399053486918474) internal successors, (44123), 11201 states have internal predecessors, (44123), 0 states have call successors, (0), 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 21:08:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11202 states to 11202 states and 44123 transitions. [2023-11-23 21:08:16,603 INFO L78 Accepts]: Start accepts. Automaton has 11202 states and 44123 transitions. Word has length 11 [2023-11-23 21:08:16,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:16,603 INFO L495 AbstractCegarLoop]: Abstraction has 11202 states and 44123 transitions. [2023-11-23 21:08:16,604 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 21:08:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 11202 states and 44123 transitions. [2023-11-23 21:08:16,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:08:16,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:16,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:16,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:08:16,609 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:16,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:16,609 INFO L85 PathProgramCache]: Analyzing trace with hash -765687725, now seen corresponding path program 1 times [2023-11-23 21:08:16,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:16,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122767263] [2023-11-23 21:08:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:16,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:16,704 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 21:08:16,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:16,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122767263] [2023-11-23 21:08:16,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122767263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:16,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:16,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:08:16,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494109025] [2023-11-23 21:08:16,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:16,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:16,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:16,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:16,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:16,706 INFO L87 Difference]: Start difference. First operand 11202 states and 44123 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 21:08:16,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:16,869 INFO L93 Difference]: Finished difference Result 10803 states and 42703 transitions. [2023-11-23 21:08:16,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:16,869 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 21:08:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:16,925 INFO L225 Difference]: With dead ends: 10803 [2023-11-23 21:08:16,925 INFO L226 Difference]: Without dead ends: 10803 [2023-11-23 21:08:16,925 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 21:08:16,927 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:16,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 13 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:08:16,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10803 states. [2023-11-23 21:08:17,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10803 to 10803. [2023-11-23 21:08:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10803 states, 10802 states have (on average 3.9532493982595818) internal successors, (42703), 10802 states have internal predecessors, (42703), 0 states have call successors, (0), 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 21:08:17,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10803 states to 10803 states and 42703 transitions. [2023-11-23 21:08:17,308 INFO L78 Accepts]: Start accepts. Automaton has 10803 states and 42703 transitions. Word has length 11 [2023-11-23 21:08:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:17,308 INFO L495 AbstractCegarLoop]: Abstraction has 10803 states and 42703 transitions. [2023-11-23 21:08:17,308 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 21:08:17,308 INFO L276 IsEmpty]: Start isEmpty. Operand 10803 states and 42703 transitions. [2023-11-23 21:08:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:17,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:17,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:17,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:08:17,365 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:17,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:17,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1961572108, now seen corresponding path program 1 times [2023-11-23 21:08:17,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:17,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909693974] [2023-11-23 21:08:17,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:17,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:17,593 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 21:08:17,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:17,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909693974] [2023-11-23 21:08:17,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909693974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:17,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:17,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:08:17,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356170434] [2023-11-23 21:08:17,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:17,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:08:17,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:17,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:08:17,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:08:17,596 INFO L87 Difference]: Start difference. First operand 10803 states and 42703 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:18,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:18,258 INFO L93 Difference]: Finished difference Result 22287 states and 84642 transitions. [2023-11-23 21:08:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:08:18,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:18,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:18,353 INFO L225 Difference]: With dead ends: 22287 [2023-11-23 21:08:18,353 INFO L226 Difference]: Without dead ends: 22287 [2023-11-23 21:08:18,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:18,356 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 81 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:18,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 124 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22287 states. [2023-11-23 21:08:18,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22287 to 14115. [2023-11-23 21:08:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14115 states, 14114 states have (on average 3.867011477965141) internal successors, (54579), 14114 states have internal predecessors, (54579), 0 states have call successors, (0), 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 21:08:18,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14115 states to 14115 states and 54579 transitions. [2023-11-23 21:08:18,979 INFO L78 Accepts]: Start accepts. Automaton has 14115 states and 54579 transitions. Word has length 51 [2023-11-23 21:08:18,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:18,979 INFO L495 AbstractCegarLoop]: Abstraction has 14115 states and 54579 transitions. [2023-11-23 21:08:18,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:18,980 INFO L276 IsEmpty]: Start isEmpty. Operand 14115 states and 54579 transitions. [2023-11-23 21:08:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:19,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:19,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:19,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:08:19,040 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:19,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:19,040 INFO L85 PathProgramCache]: Analyzing trace with hash 285906060, now seen corresponding path program 2 times [2023-11-23 21:08:19,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:19,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139832988] [2023-11-23 21:08:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:19,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:20,345 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 21:08:20,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:20,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139832988] [2023-11-23 21:08:20,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139832988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:20,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:20,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:08:20,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798084118] [2023-11-23 21:08:20,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:20,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:08:20,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:20,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:08:20,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:08:20,348 INFO L87 Difference]: Start difference. First operand 14115 states and 54579 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:20,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:20,912 INFO L93 Difference]: Finished difference Result 19408 states and 74245 transitions. [2023-11-23 21:08:20,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:08:20,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:20,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:20,985 INFO L225 Difference]: With dead ends: 19408 [2023-11-23 21:08:20,985 INFO L226 Difference]: Without dead ends: 12342 [2023-11-23 21:08:20,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:08:20,987 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 203 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:20,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 63 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:08:21,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12342 states. [2023-11-23 21:08:21,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12342 to 12342. [2023-11-23 21:08:21,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12342 states, 12341 states have (on average 3.776922453609918) internal successors, (46611), 12341 states have internal predecessors, (46611), 0 states have call successors, (0), 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 21:08:21,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12342 states to 12342 states and 46611 transitions. [2023-11-23 21:08:21,660 INFO L78 Accepts]: Start accepts. Automaton has 12342 states and 46611 transitions. Word has length 51 [2023-11-23 21:08:21,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:21,662 INFO L495 AbstractCegarLoop]: Abstraction has 12342 states and 46611 transitions. [2023-11-23 21:08:21,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:21,663 INFO L276 IsEmpty]: Start isEmpty. Operand 12342 states and 46611 transitions. [2023-11-23 21:08:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:21,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:21,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:21,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:08:21,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:21,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:21,729 INFO L85 PathProgramCache]: Analyzing trace with hash -597195446, now seen corresponding path program 3 times [2023-11-23 21:08:21,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:21,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789798014] [2023-11-23 21:08:21,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:21,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:21,904 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 21:08:21,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:21,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789798014] [2023-11-23 21:08:21,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789798014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:21,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:21,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:08:21,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678110502] [2023-11-23 21:08:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:21,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:08:21,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:21,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:08:21,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:08:21,907 INFO L87 Difference]: Start difference. First operand 12342 states and 46611 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:22,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:22,274 INFO L93 Difference]: Finished difference Result 18987 states and 69416 transitions. [2023-11-23 21:08:22,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:08:22,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:22,392 INFO L225 Difference]: With dead ends: 18987 [2023-11-23 21:08:22,392 INFO L226 Difference]: Without dead ends: 18663 [2023-11-23 21:08:22,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:22,394 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 91 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:22,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 130 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18663 states. [2023-11-23 21:08:22,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18663 to 12963. [2023-11-23 21:08:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12963 states, 12962 states have (on average 3.701203517975621) internal successors, (47975), 12962 states have internal predecessors, (47975), 0 states have call successors, (0), 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 21:08:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12963 states to 12963 states and 47975 transitions. [2023-11-23 21:08:23,040 INFO L78 Accepts]: Start accepts. Automaton has 12963 states and 47975 transitions. Word has length 51 [2023-11-23 21:08:23,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:23,040 INFO L495 AbstractCegarLoop]: Abstraction has 12963 states and 47975 transitions. [2023-11-23 21:08:23,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:23,040 INFO L276 IsEmpty]: Start isEmpty. Operand 12963 states and 47975 transitions. [2023-11-23 21:08:23,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:23,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:23,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:23,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:08:23,090 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:23,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:23,091 INFO L85 PathProgramCache]: Analyzing trace with hash 731383016, now seen corresponding path program 4 times [2023-11-23 21:08:23,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:23,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265785799] [2023-11-23 21:08:23,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:23,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:23,352 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 21:08:23,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:23,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265785799] [2023-11-23 21:08:23,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265785799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:23,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:23,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:08:23,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549374304] [2023-11-23 21:08:23,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:23,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:08:23,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:23,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:08:23,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:23,355 INFO L87 Difference]: Start difference. First operand 12963 states and 47975 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:23,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:23,719 INFO L93 Difference]: Finished difference Result 19617 states and 70833 transitions. [2023-11-23 21:08:23,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:08:23,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:23,801 INFO L225 Difference]: With dead ends: 19617 [2023-11-23 21:08:23,801 INFO L226 Difference]: Without dead ends: 19338 [2023-11-23 21:08:23,801 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 21:08:23,802 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 120 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:23,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 172 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:23,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19338 states. [2023-11-23 21:08:24,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19338 to 13716. [2023-11-23 21:08:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13716 states, 13715 states have (on average 3.683485235144003) internal successors, (50519), 13715 states have internal predecessors, (50519), 0 states have call successors, (0), 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 21:08:24,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13716 states to 13716 states and 50519 transitions. [2023-11-23 21:08:24,349 INFO L78 Accepts]: Start accepts. Automaton has 13716 states and 50519 transitions. Word has length 51 [2023-11-23 21:08:24,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:24,350 INFO L495 AbstractCegarLoop]: Abstraction has 13716 states and 50519 transitions. [2023-11-23 21:08:24,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:24,351 INFO L276 IsEmpty]: Start isEmpty. Operand 13716 states and 50519 transitions. [2023-11-23 21:08:24,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:24,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:24,402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:24,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:08:24,403 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:24,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:24,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1306171152, now seen corresponding path program 5 times [2023-11-23 21:08:24,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:24,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97524464] [2023-11-23 21:08:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:24,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:24,558 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 21:08:24,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:24,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97524464] [2023-11-23 21:08:24,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97524464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:24,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:24,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:08:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092483279] [2023-11-23 21:08:24,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:24,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:08:24,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:24,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:08:24,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:08:24,565 INFO L87 Difference]: Start difference. First operand 13716 states and 50519 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:24,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:24,898 INFO L93 Difference]: Finished difference Result 18642 states and 66743 transitions. [2023-11-23 21:08:24,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:08:24,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:24,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:24,976 INFO L225 Difference]: With dead ends: 18642 [2023-11-23 21:08:24,976 INFO L226 Difference]: Without dead ends: 17967 [2023-11-23 21:08:24,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:24,978 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 81 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:24,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 129 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:25,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17967 states. [2023-11-23 21:08:25,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17967 to 12582. [2023-11-23 21:08:25,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12582 states, 12581 states have (on average 3.648676575788888) internal successors, (45904), 12581 states have internal predecessors, (45904), 0 states have call successors, (0), 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 21:08:25,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12582 states to 12582 states and 45904 transitions. [2023-11-23 21:08:25,582 INFO L78 Accepts]: Start accepts. Automaton has 12582 states and 45904 transitions. Word has length 51 [2023-11-23 21:08:25,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:25,583 INFO L495 AbstractCegarLoop]: Abstraction has 12582 states and 45904 transitions. [2023-11-23 21:08:25,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:25,583 INFO L276 IsEmpty]: Start isEmpty. Operand 12582 states and 45904 transitions. [2023-11-23 21:08:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:25,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:25,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:25,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:08:25,617 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:25,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:25,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1379290800, now seen corresponding path program 6 times [2023-11-23 21:08:25,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:25,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852620462] [2023-11-23 21:08:25,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:25,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:25,837 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 21:08:25,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:25,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852620462] [2023-11-23 21:08:25,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852620462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:25,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:25,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:08:25,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361930914] [2023-11-23 21:08:25,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:25,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:08:25,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:25,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:08:25,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:25,840 INFO L87 Difference]: Start difference. First operand 12582 states and 45904 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:26,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:26,134 INFO L93 Difference]: Finished difference Result 13461 states and 46740 transitions. [2023-11-23 21:08:26,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:08:26,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:26,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:26,184 INFO L225 Difference]: With dead ends: 13461 [2023-11-23 21:08:26,184 INFO L226 Difference]: Without dead ends: 13077 [2023-11-23 21:08:26,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 21:08:26,185 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 126 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:26,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 176 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:26,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13077 states. [2023-11-23 21:08:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13077 to 9162. [2023-11-23 21:08:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9162 states, 9161 states have (on average 3.4967798275297457) internal successors, (32034), 9161 states have internal predecessors, (32034), 0 states have call successors, (0), 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 21:08:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9162 states to 9162 states and 32034 transitions. [2023-11-23 21:08:26,524 INFO L78 Accepts]: Start accepts. Automaton has 9162 states and 32034 transitions. Word has length 51 [2023-11-23 21:08:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:26,525 INFO L495 AbstractCegarLoop]: Abstraction has 9162 states and 32034 transitions. [2023-11-23 21:08:26,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9162 states and 32034 transitions. [2023-11-23 21:08:26,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:26,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:26,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:26,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 21:08:26,541 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:26,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:26,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1197273800, now seen corresponding path program 7 times [2023-11-23 21:08:26,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:26,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14857271] [2023-11-23 21:08:26,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:26,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:26,788 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 21:08:26,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:26,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14857271] [2023-11-23 21:08:26,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14857271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:26,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:26,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:08:26,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210333440] [2023-11-23 21:08:26,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:26,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:08:26,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:26,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:08:26,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:08:26,791 INFO L87 Difference]: Start difference. First operand 9162 states and 32034 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:27,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:27,136 INFO L93 Difference]: Finished difference Result 14094 states and 47949 transitions. [2023-11-23 21:08:27,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:08:27,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:27,179 INFO L225 Difference]: With dead ends: 14094 [2023-11-23 21:08:27,179 INFO L226 Difference]: Without dead ends: 13266 [2023-11-23 21:08:27,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:08:27,182 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 175 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:27,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 208 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:27,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13266 states. [2023-11-23 21:08:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13266 to 9063. [2023-11-23 21:08:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9063 states, 9062 states have (on average 3.4373206797616422) internal successors, (31149), 9062 states have internal predecessors, (31149), 0 states have call successors, (0), 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 21:08:27,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9063 states to 9063 states and 31149 transitions. [2023-11-23 21:08:27,404 INFO L78 Accepts]: Start accepts. Automaton has 9063 states and 31149 transitions. Word has length 51 [2023-11-23 21:08:27,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:27,404 INFO L495 AbstractCegarLoop]: Abstraction has 9063 states and 31149 transitions. [2023-11-23 21:08:27,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:27,404 INFO L276 IsEmpty]: Start isEmpty. Operand 9063 states and 31149 transitions. [2023-11-23 21:08:27,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:27,420 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:27,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:27,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 21:08:27,420 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:27,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:27,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1601025748, now seen corresponding path program 8 times [2023-11-23 21:08:27,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:27,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68154088] [2023-11-23 21:08:27,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:27,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:27,592 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 21:08:27,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:27,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68154088] [2023-11-23 21:08:27,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68154088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:27,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:27,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:08:27,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155503689] [2023-11-23 21:08:27,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:27,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:08:27,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:27,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:08:27,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:08:27,595 INFO L87 Difference]: Start difference. First operand 9063 states and 31149 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:27,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:27,943 INFO L93 Difference]: Finished difference Result 11835 states and 39098 transitions. [2023-11-23 21:08:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:08:27,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:27,975 INFO L225 Difference]: With dead ends: 11835 [2023-11-23 21:08:27,975 INFO L226 Difference]: Without dead ends: 10755 [2023-11-23 21:08:27,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:08:27,976 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 144 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:27,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 234 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:27,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10755 states. [2023-11-23 21:08:28,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10755 to 7650. [2023-11-23 21:08:28,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7650 states, 7649 states have (on average 3.3341613282782063) internal successors, (25503), 7649 states have internal predecessors, (25503), 0 states have call successors, (0), 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 21:08:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7650 states to 7650 states and 25503 transitions. [2023-11-23 21:08:28,187 INFO L78 Accepts]: Start accepts. Automaton has 7650 states and 25503 transitions. Word has length 51 [2023-11-23 21:08:28,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:28,187 INFO L495 AbstractCegarLoop]: Abstraction has 7650 states and 25503 transitions. [2023-11-23 21:08:28,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:28,187 INFO L276 IsEmpty]: Start isEmpty. Operand 7650 states and 25503 transitions. [2023-11-23 21:08:28,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:28,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:28,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:28,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 21:08:28,200 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:28,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:28,200 INFO L85 PathProgramCache]: Analyzing trace with hash 822470980, now seen corresponding path program 9 times [2023-11-23 21:08:28,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:28,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238466116] [2023-11-23 21:08:28,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:28,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:28,366 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 21:08:28,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:28,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238466116] [2023-11-23 21:08:28,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238466116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:28,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:28,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:08:28,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434217372] [2023-11-23 21:08:28,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:28,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:08:28,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:28,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:08:28,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:28,369 INFO L87 Difference]: Start difference. First operand 7650 states and 25503 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:28,682 INFO L93 Difference]: Finished difference Result 10083 states and 32900 transitions. [2023-11-23 21:08:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:08:28,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:28,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:28,712 INFO L225 Difference]: With dead ends: 10083 [2023-11-23 21:08:28,712 INFO L226 Difference]: Without dead ends: 9621 [2023-11-23 21:08:28,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 21:08:28,713 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 109 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:28,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 169 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:28,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9621 states. [2023-11-23 21:08:28,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9621 to 6957. [2023-11-23 21:08:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6957 states, 6956 states have (on average 3.314548591144336) internal successors, (23056), 6956 states have internal predecessors, (23056), 0 states have call successors, (0), 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 21:08:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6957 states to 6957 states and 23056 transitions. [2023-11-23 21:08:28,942 INFO L78 Accepts]: Start accepts. Automaton has 6957 states and 23056 transitions. Word has length 51 [2023-11-23 21:08:28,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:28,942 INFO L495 AbstractCegarLoop]: Abstraction has 6957 states and 23056 transitions. [2023-11-23 21:08:28,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:28,943 INFO L276 IsEmpty]: Start isEmpty. Operand 6957 states and 23056 transitions. [2023-11-23 21:08:28,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:28,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:28,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:28,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 21:08:28,961 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:28,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1275040866, now seen corresponding path program 10 times [2023-11-23 21:08:28,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:28,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563328626] [2023-11-23 21:08:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:28,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:29,161 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 21:08:29,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:29,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563328626] [2023-11-23 21:08:29,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563328626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:29,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:29,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:08:29,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683241443] [2023-11-23 21:08:29,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:29,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:08:29,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:29,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:08:29,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:08:29,164 INFO L87 Difference]: Start difference. First operand 6957 states and 23056 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:29,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:29,565 INFO L93 Difference]: Finished difference Result 8274 states and 26216 transitions. [2023-11-23 21:08:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:08:29,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:29,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:29,591 INFO L225 Difference]: With dead ends: 8274 [2023-11-23 21:08:29,591 INFO L226 Difference]: Without dead ends: 7641 [2023-11-23 21:08:29,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:08:29,592 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 142 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:29,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 283 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:08:29,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7641 states. [2023-11-23 21:08:29,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7641 to 5514. [2023-11-23 21:08:29,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 5513 states have (on average 3.2432432432432434) internal successors, (17880), 5513 states have internal predecessors, (17880), 0 states have call successors, (0), 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 21:08:29,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 17880 transitions. [2023-11-23 21:08:29,773 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 17880 transitions. Word has length 51 [2023-11-23 21:08:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:29,773 INFO L495 AbstractCegarLoop]: Abstraction has 5514 states and 17880 transitions. [2023-11-23 21:08:29,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:29,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 17880 transitions. [2023-11-23 21:08:29,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:29,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:29,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:29,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 21:08:29,789 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:29,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:29,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1814840718, now seen corresponding path program 11 times [2023-11-23 21:08:29,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:29,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777326975] [2023-11-23 21:08:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:29,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:29,977 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 21:08:29,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:29,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777326975] [2023-11-23 21:08:29,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777326975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:29,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:29,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:08:29,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798471752] [2023-11-23 21:08:29,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:29,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:08:29,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:29,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:08:29,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:08:29,981 INFO L87 Difference]: Start difference. First operand 5514 states and 17880 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:30,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:30,272 INFO L93 Difference]: Finished difference Result 6984 states and 22212 transitions. [2023-11-23 21:08:30,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:08:30,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:30,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:30,293 INFO L225 Difference]: With dead ends: 6984 [2023-11-23 21:08:30,293 INFO L226 Difference]: Without dead ends: 6768 [2023-11-23 21:08:30,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:08:30,295 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 134 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:30,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 178 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:30,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2023-11-23 21:08:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 5370. [2023-11-23 21:08:30,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5370 states, 5369 states have (on average 3.2184764388154217) internal successors, (17280), 5369 states have internal predecessors, (17280), 0 states have call successors, (0), 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 21:08:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5370 states to 5370 states and 17280 transitions. [2023-11-23 21:08:30,447 INFO L78 Accepts]: Start accepts. Automaton has 5370 states and 17280 transitions. Word has length 51 [2023-11-23 21:08:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:30,449 INFO L495 AbstractCegarLoop]: Abstraction has 5370 states and 17280 transitions. [2023-11-23 21:08:30,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:30,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5370 states and 17280 transitions. [2023-11-23 21:08:30,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:30,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:30,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:30,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 21:08:30,461 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:30,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:30,461 INFO L85 PathProgramCache]: Analyzing trace with hash 761723882, now seen corresponding path program 12 times [2023-11-23 21:08:30,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:30,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817592349] [2023-11-23 21:08:30,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:30,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:30,716 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 21:08:30,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:30,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817592349] [2023-11-23 21:08:30,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817592349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:30,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:30,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:08:30,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400950099] [2023-11-23 21:08:30,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:30,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:08:30,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:30,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:08:30,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:08:30,719 INFO L87 Difference]: Start difference. First operand 5370 states and 17280 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:31,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:31,055 INFO L93 Difference]: Finished difference Result 6840 states and 21612 transitions. [2023-11-23 21:08:31,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:08:31,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:31,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:31,075 INFO L225 Difference]: With dead ends: 6840 [2023-11-23 21:08:31,075 INFO L226 Difference]: Without dead ends: 6264 [2023-11-23 21:08:31,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:08:31,076 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 170 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:31,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 184 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:08:31,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2023-11-23 21:08:31,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 5034. [2023-11-23 21:08:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5034 states, 5033 states have (on average 3.214782435922909) internal successors, (16180), 5033 states have internal predecessors, (16180), 0 states have call successors, (0), 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 21:08:31,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 16180 transitions. [2023-11-23 21:08:31,225 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 16180 transitions. Word has length 51 [2023-11-23 21:08:31,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:31,225 INFO L495 AbstractCegarLoop]: Abstraction has 5034 states and 16180 transitions. [2023-11-23 21:08:31,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:31,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 16180 transitions. [2023-11-23 21:08:31,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:31,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:31,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:31,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 21:08:31,238 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:31,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:31,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1867948198, now seen corresponding path program 13 times [2023-11-23 21:08:31,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:31,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926610069] [2023-11-23 21:08:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:31,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:31,434 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 21:08:31,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:31,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926610069] [2023-11-23 21:08:31,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926610069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:31,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:31,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:08:31,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675713683] [2023-11-23 21:08:31,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:31,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:08:31,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:31,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:08:31,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:08:31,436 INFO L87 Difference]: Start difference. First operand 5034 states and 16180 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:31,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:31,904 INFO L93 Difference]: Finished difference Result 6558 states and 20602 transitions. [2023-11-23 21:08:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:08:31,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:31,924 INFO L225 Difference]: With dead ends: 6558 [2023-11-23 21:08:31,925 INFO L226 Difference]: Without dead ends: 6156 [2023-11-23 21:08:31,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:08:31,926 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 189 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:31,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 243 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:08:31,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6156 states. [2023-11-23 21:08:32,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6156 to 4926. [2023-11-23 21:08:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4926 states, 4925 states have (on average 3.2121827411167514) internal successors, (15820), 4925 states have internal predecessors, (15820), 0 states have call successors, (0), 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 21:08:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4926 states to 4926 states and 15820 transitions. [2023-11-23 21:08:32,077 INFO L78 Accepts]: Start accepts. Automaton has 4926 states and 15820 transitions. Word has length 51 [2023-11-23 21:08:32,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:32,077 INFO L495 AbstractCegarLoop]: Abstraction has 4926 states and 15820 transitions. [2023-11-23 21:08:32,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:32,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4926 states and 15820 transitions. [2023-11-23 21:08:32,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:32,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:32,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:32,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 21:08:32,089 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:32,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:32,090 INFO L85 PathProgramCache]: Analyzing trace with hash -905019726, now seen corresponding path program 14 times [2023-11-23 21:08:32,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:32,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783245770] [2023-11-23 21:08:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:32,286 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 21:08:32,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:32,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783245770] [2023-11-23 21:08:32,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783245770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:32,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:32,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:08:32,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297884211] [2023-11-23 21:08:32,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:32,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:08:32,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:32,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:08:32,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:08:32,290 INFO L87 Difference]: Start difference. First operand 4926 states and 15820 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:32,735 INFO L93 Difference]: Finished difference Result 6453 states and 20347 transitions. [2023-11-23 21:08:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:08:32,736 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:32,752 INFO L225 Difference]: With dead ends: 6453 [2023-11-23 21:08:32,753 INFO L226 Difference]: Without dead ends: 5823 [2023-11-23 21:08:32,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:08:32,754 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 163 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:32,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 322 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:08:32,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5823 states. [2023-11-23 21:08:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5823 to 4185. [2023-11-23 21:08:32,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4185 states, 4184 states have (on average 3.2007648183556405) internal successors, (13392), 4184 states have internal predecessors, (13392), 0 states have call successors, (0), 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 21:08:32,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 13392 transitions. [2023-11-23 21:08:32,872 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 13392 transitions. Word has length 51 [2023-11-23 21:08:32,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:32,873 INFO L495 AbstractCegarLoop]: Abstraction has 4185 states and 13392 transitions. [2023-11-23 21:08:32,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 13392 transitions. [2023-11-23 21:08:32,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:32,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:32,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:32,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 21:08:32,882 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:32,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:32,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2115680990, now seen corresponding path program 15 times [2023-11-23 21:08:32,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:32,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160074889] [2023-11-23 21:08:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:32,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:33,040 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 21:08:33,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:33,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160074889] [2023-11-23 21:08:33,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160074889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:33,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:33,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:08:33,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339802492] [2023-11-23 21:08:33,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:33,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:08:33,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:33,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:08:33,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:08:33,043 INFO L87 Difference]: Start difference. First operand 4185 states and 13392 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:33,290 INFO L93 Difference]: Finished difference Result 5655 states and 17790 transitions. [2023-11-23 21:08:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:08:33,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:33,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:33,304 INFO L225 Difference]: With dead ends: 5655 [2023-11-23 21:08:33,305 INFO L226 Difference]: Without dead ends: 5547 [2023-11-23 21:08:33,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:08:33,306 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 119 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:33,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 186 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:33,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2023-11-23 21:08:33,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 4029. [2023-11-23 21:08:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4029 states, 4028 states have (on average 3.174280039721946) internal successors, (12786), 4028 states have internal predecessors, (12786), 0 states have call successors, (0), 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 21:08:33,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4029 states to 4029 states and 12786 transitions. [2023-11-23 21:08:33,418 INFO L78 Accepts]: Start accepts. Automaton has 4029 states and 12786 transitions. Word has length 51 [2023-11-23 21:08:33,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:33,418 INFO L495 AbstractCegarLoop]: Abstraction has 4029 states and 12786 transitions. [2023-11-23 21:08:33,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:33,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4029 states and 12786 transitions. [2023-11-23 21:08:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:33,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:33,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:33,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 21:08:33,427 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:33,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:33,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1830633826, now seen corresponding path program 16 times [2023-11-23 21:08:33,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:33,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552336547] [2023-11-23 21:08:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:33,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:33,601 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 21:08:33,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:33,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552336547] [2023-11-23 21:08:33,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552336547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:33,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:33,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:08:33,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224815618] [2023-11-23 21:08:33,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:33,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:08:33,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:33,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:08:33,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:08:33,605 INFO L87 Difference]: Start difference. First operand 4029 states and 12786 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:33,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:33,967 INFO L93 Difference]: Finished difference Result 5457 states and 17073 transitions. [2023-11-23 21:08:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:08:33,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:33,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:33,984 INFO L225 Difference]: With dead ends: 5457 [2023-11-23 21:08:33,985 INFO L226 Difference]: Without dead ends: 5259 [2023-11-23 21:08:33,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:08:33,988 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 139 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:33,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 278 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:08:34,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2023-11-23 21:08:34,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 3825. [2023-11-23 21:08:34,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3825 states, 3824 states have (on average 3.162133891213389) internal successors, (12092), 3824 states have internal predecessors, (12092), 0 states have call successors, (0), 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 21:08:34,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3825 states to 3825 states and 12092 transitions. [2023-11-23 21:08:34,128 INFO L78 Accepts]: Start accepts. Automaton has 3825 states and 12092 transitions. Word has length 51 [2023-11-23 21:08:34,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:34,129 INFO L495 AbstractCegarLoop]: Abstraction has 3825 states and 12092 transitions. [2023-11-23 21:08:34,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:34,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3825 states and 12092 transitions. [2023-11-23 21:08:34,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:34,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:34,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:34,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-23 21:08:34,140 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:34,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:34,142 INFO L85 PathProgramCache]: Analyzing trace with hash 40517252, now seen corresponding path program 17 times [2023-11-23 21:08:34,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:34,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685681018] [2023-11-23 21:08:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:34,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:34,354 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 21:08:34,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:34,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685681018] [2023-11-23 21:08:34,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685681018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:34,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:34,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:08:34,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580529423] [2023-11-23 21:08:34,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:34,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:08:34,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:34,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:08:34,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:08:34,358 INFO L87 Difference]: Start difference. First operand 3825 states and 12092 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:34,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:34,805 INFO L93 Difference]: Finished difference Result 5226 states and 16316 transitions. [2023-11-23 21:08:34,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:08:34,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:34,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:34,822 INFO L225 Difference]: With dead ends: 5226 [2023-11-23 21:08:34,823 INFO L226 Difference]: Without dead ends: 4884 [2023-11-23 21:08:34,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:08:34,828 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 152 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:34,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 357 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:08:34,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4884 states. [2023-11-23 21:08:34,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4884 to 3546. [2023-11-23 21:08:34,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 3545 states have (on average 3.17574047954866) internal successors, (11258), 3545 states have internal predecessors, (11258), 0 states have call successors, (0), 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 21:08:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 11258 transitions. [2023-11-23 21:08:34,960 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 11258 transitions. Word has length 51 [2023-11-23 21:08:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:34,960 INFO L495 AbstractCegarLoop]: Abstraction has 3546 states and 11258 transitions. [2023-11-23 21:08:34,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 11258 transitions. [2023-11-23 21:08:34,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:34,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:34,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:34,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-23 21:08:34,971 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:34,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash -396510558, now seen corresponding path program 18 times [2023-11-23 21:08:34,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:34,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960763665] [2023-11-23 21:08:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:34,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:35,169 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 21:08:35,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:35,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960763665] [2023-11-23 21:08:35,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960763665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:35,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:35,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:08:35,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796315216] [2023-11-23 21:08:35,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:35,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:08:35,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:35,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:08:35,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:35,172 INFO L87 Difference]: Start difference. First operand 3546 states and 11258 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:35,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:35,386 INFO L93 Difference]: Finished difference Result 4473 states and 13861 transitions. [2023-11-23 21:08:35,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:08:35,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:35,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:35,399 INFO L225 Difference]: With dead ends: 4473 [2023-11-23 21:08:35,400 INFO L226 Difference]: Without dead ends: 3903 [2023-11-23 21:08:35,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 21:08:35,402 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 83 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:35,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 146 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:35,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2023-11-23 21:08:35,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 3102. [2023-11-23 21:08:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3102 states, 3101 states have (on average 3.1325378910029023) internal successors, (9714), 3101 states have internal predecessors, (9714), 0 states have call successors, (0), 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 21:08:35,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 9714 transitions. [2023-11-23 21:08:35,513 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 9714 transitions. Word has length 51 [2023-11-23 21:08:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:35,513 INFO L495 AbstractCegarLoop]: Abstraction has 3102 states and 9714 transitions. [2023-11-23 21:08:35,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:35,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 9714 transitions. [2023-11-23 21:08:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:35,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:35,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:35,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-23 21:08:35,523 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:35,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:35,523 INFO L85 PathProgramCache]: Analyzing trace with hash -941121246, now seen corresponding path program 19 times [2023-11-23 21:08:35,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:35,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541117380] [2023-11-23 21:08:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:35,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:35,731 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 21:08:35,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:35,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541117380] [2023-11-23 21:08:35,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541117380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:35,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:35,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:08:35,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813553132] [2023-11-23 21:08:35,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:35,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:08:35,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:35,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:08:35,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:08:35,735 INFO L87 Difference]: Start difference. First operand 3102 states and 9714 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:35,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:35,995 INFO L93 Difference]: Finished difference Result 1881 states and 5545 transitions. [2023-11-23 21:08:35,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:08:35,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:35,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:35,999 INFO L225 Difference]: With dead ends: 1881 [2023-11-23 21:08:36,000 INFO L226 Difference]: Without dead ends: 1068 [2023-11-23 21:08:36,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:08:36,001 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 81 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:36,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 201 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:36,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2023-11-23 21:08:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 852. [2023-11-23 21:08:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 2.9706227967097534) internal successors, (2528), 851 states have internal predecessors, (2528), 0 states have call successors, (0), 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 21:08:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2528 transitions. [2023-11-23 21:08:36,028 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2528 transitions. Word has length 51 [2023-11-23 21:08:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:36,028 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 2528 transitions. [2023-11-23 21:08:36,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:36,029 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2528 transitions. [2023-11-23 21:08:36,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:08:36,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:36,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:36,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-23 21:08:36,032 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 21:08:36,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:36,032 INFO L85 PathProgramCache]: Analyzing trace with hash 961894900, now seen corresponding path program 20 times [2023-11-23 21:08:36,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:36,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789485855] [2023-11-23 21:08:36,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:36,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:36,231 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 21:08:36,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:36,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789485855] [2023-11-23 21:08:36,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789485855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:36,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:36,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:08:36,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170300622] [2023-11-23 21:08:36,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:36,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:08:36,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:36,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:08:36,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:08:36,235 INFO L87 Difference]: Start difference. First operand 852 states and 2528 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:36,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:36,441 INFO L93 Difference]: Finished difference Result 687 states and 1982 transitions. [2023-11-23 21:08:36,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:08:36,442 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-23 21:08:36,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:36,442 INFO L225 Difference]: With dead ends: 687 [2023-11-23 21:08:36,443 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:08:36,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:08:36,444 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 62 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:36,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 143 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:36,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:08:36,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:08:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 21:08:36,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:08:36,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2023-11-23 21:08:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:36,445 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:08:36,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:36,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:08:36,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:08:36,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 22 remaining) [2023-11-23 21:08:36,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2023-11-23 21:08:36,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2023-11-23 21:08:36,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2023-11-23 21:08:36,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2023-11-23 21:08:36,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2023-11-23 21:08:36,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2023-11-23 21:08:36,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2023-11-23 21:08:36,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2023-11-23 21:08:36,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2023-11-23 21:08:36,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2023-11-23 21:08:36,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2023-11-23 21:08:36,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2023-11-23 21:08:36,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2023-11-23 21:08:36,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2023-11-23 21:08:36,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2023-11-23 21:08:36,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (5 of 22 remaining) [2023-11-23 21:08:36,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (4 of 22 remaining) [2023-11-23 21:08:36,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 22 remaining) [2023-11-23 21:08:36,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 22 remaining) [2023-11-23 21:08:36,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 22 remaining) [2023-11-23 21:08:36,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 22 remaining) [2023-11-23 21:08:36,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-23 21:08:36,461 INFO L445 BasicCegarLoop]: Path program histogram: [20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:36,466 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 21:08:36,466 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:08:36,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:08:36 BasicIcfg [2023-11-23 21:08:36,470 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:08:36,470 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:08:36,471 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:08:36,471 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:08:36,471 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:04" (3/4) ... [2023-11-23 21:08:36,474 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:08:36,477 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-23 21:08:36,478 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-23 21:08:36,478 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-23 21:08:36,478 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-11-23 21:08:36,489 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 101 nodes and edges [2023-11-23 21:08:36,489 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-23 21:08:36,490 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 21:08:36,490 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 21:08:36,603 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:08:36,603 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:08:36,604 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:08:36,605 INFO L158 Benchmark]: Toolchain (without parser) took 33527.33ms. Allocated memory was 144.7MB in the beginning and 11.1GB in the end (delta: 11.0GB). Free memory was 112.6MB in the beginning and 9.2GB in the end (delta: -9.1GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2023-11-23 21:08:36,605 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory was 67.2MB in the beginning and 67.1MB in the end (delta: 144.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:08:36,605 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.12ms. Allocated memory is still 144.7MB. Free memory was 112.2MB in the beginning and 100.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:08:36,606 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.17ms. Allocated memory is still 144.7MB. Free memory was 100.4MB in the beginning and 98.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:08:36,606 INFO L158 Benchmark]: Boogie Preprocessor took 35.79ms. Allocated memory is still 144.7MB. Free memory was 98.4MB in the beginning and 96.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:08:36,609 INFO L158 Benchmark]: RCFGBuilder took 1278.45ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 96.6MB in the beginning and 126.7MB in the end (delta: -30.1MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2023-11-23 21:08:36,609 INFO L158 Benchmark]: TraceAbstraction took 31713.24ms. Allocated memory was 176.2MB in the beginning and 11.1GB in the end (delta: 10.9GB). Free memory was 125.8MB in the beginning and 9.2GB in the end (delta: -9.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-11-23 21:08:36,610 INFO L158 Benchmark]: Witness Printer took 133.44ms. Allocated memory is still 11.1GB. Free memory was 9.2GB in the beginning and 9.2GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:08:36,619 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory was 67.2MB in the beginning and 67.1MB in the end (delta: 144.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.12ms. Allocated memory is still 144.7MB. Free memory was 112.2MB in the beginning and 100.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.17ms. Allocated memory is still 144.7MB. Free memory was 100.4MB in the beginning and 98.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.79ms. Allocated memory is still 144.7MB. Free memory was 98.4MB in the beginning and 96.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1278.45ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 96.6MB in the beginning and 126.7MB in the end (delta: -30.1MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. * TraceAbstraction took 31713.24ms. Allocated memory was 176.2MB in the beginning and 11.1GB in the end (delta: 10.9GB). Free memory was 125.8MB in the beginning and 9.2GB in the end (delta: -9.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 133.44ms. Allocated memory is still 11.1GB. Free memory was 9.2GB in the beginning and 9.2GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 120]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 108 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 31.5s, OverallIterations: 28, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.6s, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2984 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2984 mSDsluCounter, 4054 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2808 mSDsCounter, 384 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5987 IncrementalHoareTripleChecker+Invalid, 6371 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 384 mSolverCounterUnsat, 1246 mSDtfsCounter, 5987 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18005occurred in iteration=0, InterpolantAutomatonStates: 182, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.1s AutomataMinimizationTime, 28 MinimizatonAttempts, 51696 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 1072 NumberOfCodeBlocks, 1072 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1044 ConstructedInterpolants, 0 QuantifiedInterpolants, 3804 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 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 - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 21:08:36,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585aed72-f61b-4b65-b263-1bb0d6263440/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 Writing output log to file Ultimate.log Result: TRUE