./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6053c0f6a5de5dc1a7614e5acfd1de5bdb570ebc833d8c4c70a1e68bd98ac1b0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:30:39,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:30:39,456 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:30:39,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:30:39,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:30:39,500 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:30:39,501 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:30:39,502 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:30:39,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:30:39,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:30:39,505 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:30:39,505 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:30:39,505 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:30:39,506 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:30:39,506 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:30:39,506 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:30:39,507 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:30:39,507 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:30:39,507 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:30:39,508 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:30:39,512 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:30:39,514 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:30:39,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:30:39,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:30:39,515 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:30:39,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:30:39,515 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:30:39,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:30:39,516 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:30:39,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:30:39,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:30:39,516 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:30:39,518 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:30:39,519 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:30:39,519 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:30:39,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:30:39,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:30:39,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:30:39,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:39,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:30:39,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:30:39,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:30:39,522 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:30:39,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:30:39,522 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:30:39,522 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:30:39,523 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:30:39,523 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_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6053c0f6a5de5dc1a7614e5acfd1de5bdb570ebc833d8c4c70a1e68bd98ac1b0 [2024-11-02 12:30:39,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:30:39,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:30:39,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:30:39,941 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:30:39,941 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:30:39,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i Unable to find full path for "g++" [2024-11-02 12:30:42,053 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:30:42,441 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:30:42,442 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2024-11-02 12:30:42,473 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2/data/33a4742ca/aecd753f051c4b9da20acd42fe212ac0/FLAG3c69434c0 [2024-11-02 12:30:42,489 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2/data/33a4742ca/aecd753f051c4b9da20acd42fe212ac0 [2024-11-02 12:30:42,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:30:42,493 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:30:42,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:42,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:30:42,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:30:42,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:42" (1/1) ... [2024-11-02 12:30:42,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c777ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42, skipping insertion in model container [2024-11-02 12:30:42,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:42" (1/1) ... [2024-11-02 12:30:42,608 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:30:43,254 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[186287,186300] [2024-11-02 12:30:43,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:43,322 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:30:43,392 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[186287,186300] [2024-11-02 12:30:43,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:43,498 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:30:43,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43 WrapperNode [2024-11-02 12:30:43,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:43,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:43,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:30:43,500 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:30:43,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,572 INFO L138 Inliner]: procedures = 246, calls = 39, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 108 [2024-11-02 12:30:43,575 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:43,576 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:30:43,577 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:30:43,577 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:30:43,587 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,592 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,593 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,611 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,620 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:30:43,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:30:43,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:30:43,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:30:43,640 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:43,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:43,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:30:43,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d22c2a40-cdc2-41d5-a2d0-f52491c03d78/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:30:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2024-11-02 12:30:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2024-11-02 12:30:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-02 12:30:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:30:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:30:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-02 12:30:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:30:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:30:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:30:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:30:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:30:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:30:43,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:30:43,761 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 12:30:44,051 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:30:44,058 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:30:44,545 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 12:30:44,545 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:30:44,723 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:30:44,724 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:30:44,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:44 BoogieIcfgContainer [2024-11-02 12:30:44,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:30:44,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:30:44,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:30:44,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:30:44,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:30:42" (1/3) ... [2024-11-02 12:30:44,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae0f2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:44, skipping insertion in model container [2024-11-02 12:30:44,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43" (2/3) ... [2024-11-02 12:30:44,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae0f2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:44, skipping insertion in model container [2024-11-02 12:30:44,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:44" (3/3) ... [2024-11-02 12:30:44,735 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2024-11-02 12:30:44,757 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:30:44,758 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-02 12:30:44,758 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 12:30:44,820 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-02 12:30:44,865 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 50 transitions, 114 flow [2024-11-02 12:30:44,995 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 588 states, 580 states have (on average 2.668965517241379) internal successors, (1548), 587 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:45,032 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:30:45,041 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@2f6b7fcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:30:45,041 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-02 12:30:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 588 states, 580 states have (on average 2.668965517241379) internal successors, (1548), 587 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:45,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:30:45,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:45,056 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:45,057 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:30:45,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:45,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1544696618, now seen corresponding path program 1 times [2024-11-02 12:30:45,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:45,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979414332] [2024-11-02 12:30:45,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:45,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:45,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:45,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979414332] [2024-11-02 12:30:45,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979414332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:45,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:45,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:45,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652364184] [2024-11-02 12:30:45,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:45,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:30:45,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:45,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:30:45,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:45,787 INFO L87 Difference]: Start difference. First operand has 588 states, 580 states have (on average 2.668965517241379) internal successors, (1548), 587 states have internal predecessors, (1548), 0 states have call successors, (0), 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, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:46,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:46,035 INFO L93 Difference]: Finished difference Result 851 states and 2232 transitions. [2024-11-02 12:30:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:30:46,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-02 12:30:46,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:46,062 INFO L225 Difference]: With dead ends: 851 [2024-11-02 12:30:46,062 INFO L226 Difference]: Without dead ends: 405 [2024-11-02 12:30:46,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:46,075 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:46,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 14 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:30:46,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-02 12:30:46,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2024-11-02 12:30:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 401 states have (on average 2.4688279301745637) internal successors, (990), 404 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 990 transitions. [2024-11-02 12:30:46,144 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 990 transitions. Word has length 8 [2024-11-02 12:30:46,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:46,144 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 990 transitions. [2024-11-02 12:30:46,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:46,145 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 990 transitions. [2024-11-02 12:30:46,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 12:30:46,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:46,146 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:46,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:30:46,146 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:30:46,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:46,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1605291128, now seen corresponding path program 1 times [2024-11-02 12:30:46,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:46,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178436294] [2024-11-02 12:30:46,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:46,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:46,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:46,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178436294] [2024-11-02 12:30:46,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178436294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:46,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:46,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:46,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847532258] [2024-11-02 12:30:46,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:46,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:30:46,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:46,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:30:46,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:46,394 INFO L87 Difference]: Start difference. First operand 405 states and 990 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:46,571 INFO L93 Difference]: Finished difference Result 597 states and 1462 transitions. [2024-11-02 12:30:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:30:46,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-02 12:30:46,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:46,577 INFO L225 Difference]: With dead ends: 597 [2024-11-02 12:30:46,577 INFO L226 Difference]: Without dead ends: 436 [2024-11-02 12:30:46,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:46,579 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:46,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 22 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:30:46,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-11-02 12:30:46,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2024-11-02 12:30:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 433 states have (on average 2.4295612009237875) internal successors, (1052), 435 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:46,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1052 transitions. [2024-11-02 12:30:46,608 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1052 transitions. Word has length 10 [2024-11-02 12:30:46,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:46,609 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 1052 transitions. [2024-11-02 12:30:46,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1052 transitions. [2024-11-02 12:30:46,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-02 12:30:46,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:46,612 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:46,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:30:46,612 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:30:46,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:46,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1696499734, now seen corresponding path program 1 times [2024-11-02 12:30:46,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:46,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498596718] [2024-11-02 12:30:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:46,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:46,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:46,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498596718] [2024-11-02 12:30:46,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498596718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:46,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:46,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:46,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353867088] [2024-11-02 12:30:46,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:46,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:30:46,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:30:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:46,748 INFO L87 Difference]: Start difference. First operand 436 states and 1052 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:46,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:46,904 INFO L93 Difference]: Finished difference Result 436 states and 1052 transitions. [2024-11-02 12:30:46,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:30:46,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-02 12:30:46,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:46,908 INFO L225 Difference]: With dead ends: 436 [2024-11-02 12:30:46,908 INFO L226 Difference]: Without dead ends: 180 [2024-11-02 12:30:46,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:46,911 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:46,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 5 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:30:46,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-02 12:30:46,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-02 12:30:46,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 178 states have (on average 2.269662921348315) internal successors, (404), 179 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 404 transitions. [2024-11-02 12:30:46,949 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 404 transitions. Word has length 16 [2024-11-02 12:30:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:46,950 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 404 transitions. [2024-11-02 12:30:46,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 404 transitions. [2024-11-02 12:30:46,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:30:46,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:46,956 INFO L215 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] [2024-11-02 12:30:46,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:30:46,956 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:30:46,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:46,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1379650883, now seen corresponding path program 1 times [2024-11-02 12:30:46,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:46,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598735687] [2024-11-02 12:30:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:46,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:48,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:48,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598735687] [2024-11-02 12:30:48,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598735687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:48,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:48,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-02 12:30:48,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068450271] [2024-11-02 12:30:48,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:48,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:30:48,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:48,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:30:48,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:30:48,295 INFO L87 Difference]: Start difference. First operand 180 states and 404 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:49,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:49,012 INFO L93 Difference]: Finished difference Result 261 states and 544 transitions. [2024-11-02 12:30:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:30:49,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:30:49,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:49,016 INFO L225 Difference]: With dead ends: 261 [2024-11-02 12:30:49,016 INFO L226 Difference]: Without dead ends: 259 [2024-11-02 12:30:49,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-02 12:30:49,020 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 99 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:49,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 29 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:30:49,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-02 12:30:49,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 222. [2024-11-02 12:30:49,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 220 states have (on average 2.2045454545454546) internal successors, (485), 221 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 485 transitions. [2024-11-02 12:30:49,039 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 485 transitions. Word has length 25 [2024-11-02 12:30:49,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:49,040 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 485 transitions. [2024-11-02 12:30:49,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:49,042 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 485 transitions. [2024-11-02 12:30:49,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:30:49,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:49,045 INFO L215 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] [2024-11-02 12:30:49,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:30:49,048 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:30:49,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:49,048 INFO L85 PathProgramCache]: Analyzing trace with hash 383479963, now seen corresponding path program 2 times [2024-11-02 12:30:49,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:49,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110988250] [2024-11-02 12:30:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:49,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:50,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110988250] [2024-11-02 12:30:50,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110988250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:50,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:50,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-02 12:30:50,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855037630] [2024-11-02 12:30:50,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:50,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:30:50,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:50,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:30:50,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:30:50,022 INFO L87 Difference]: Start difference. First operand 222 states and 485 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:50,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:50,537 INFO L93 Difference]: Finished difference Result 306 states and 617 transitions. [2024-11-02 12:30:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 12:30:50,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:30:50,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:50,540 INFO L225 Difference]: With dead ends: 306 [2024-11-02 12:30:50,540 INFO L226 Difference]: Without dead ends: 304 [2024-11-02 12:30:50,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-02 12:30:50,541 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 85 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:50,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 48 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:30:50,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-02 12:30:50,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 230. [2024-11-02 12:30:50,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 228 states have (on average 2.192982456140351) internal successors, (500), 229 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:50,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 500 transitions. [2024-11-02 12:30:50,551 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 500 transitions. Word has length 25 [2024-11-02 12:30:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:50,552 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 500 transitions. [2024-11-02 12:30:50,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 500 transitions. [2024-11-02 12:30:50,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:30:50,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:50,554 INFO L215 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] [2024-11-02 12:30:50,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:30:50,554 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:30:50,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:50,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2086419039, now seen corresponding path program 3 times [2024-11-02 12:30:50,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:50,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717678567] [2024-11-02 12:30:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:50,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:51,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:51,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:51,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717678567] [2024-11-02 12:30:51,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717678567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:51,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:51,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-02 12:30:51,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700681684] [2024-11-02 12:30:51,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:51,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:30:51,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:51,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:30:51,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:30:51,543 INFO L87 Difference]: Start difference. First operand 230 states and 500 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:52,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:52,072 INFO L93 Difference]: Finished difference Result 283 states and 583 transitions. [2024-11-02 12:30:52,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 12:30:52,073 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:30:52,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:52,075 INFO L225 Difference]: With dead ends: 283 [2024-11-02 12:30:52,075 INFO L226 Difference]: Without dead ends: 281 [2024-11-02 12:30:52,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-02 12:30:52,077 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 65 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:52,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 32 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:30:52,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-02 12:30:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 222. [2024-11-02 12:30:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 220 states have (on average 2.2045454545454546) internal successors, (485), 221 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 485 transitions. [2024-11-02 12:30:52,087 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 485 transitions. Word has length 25 [2024-11-02 12:30:52,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:52,087 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 485 transitions. [2024-11-02 12:30:52,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:52,088 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 485 transitions. [2024-11-02 12:30:52,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:30:52,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:52,089 INFO L215 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] [2024-11-02 12:30:52,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:30:52,090 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:30:52,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:52,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1021951905, now seen corresponding path program 4 times [2024-11-02 12:30:52,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:52,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479474552] [2024-11-02 12:30:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:52,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:53,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:53,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479474552] [2024-11-02 12:30:53,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479474552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:53,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:53,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-02 12:30:53,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397269770] [2024-11-02 12:30:53,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:53,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:30:53,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:53,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:30:53,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:30:53,301 INFO L87 Difference]: Start difference. First operand 222 states and 485 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:54,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:54,162 INFO L93 Difference]: Finished difference Result 455 states and 960 transitions. [2024-11-02 12:30:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-02 12:30:54,163 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:30:54,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:54,165 INFO L225 Difference]: With dead ends: 455 [2024-11-02 12:30:54,166 INFO L226 Difference]: Without dead ends: 453 [2024-11-02 12:30:54,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2024-11-02 12:30:54,170 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 118 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:54,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 33 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:30:54,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-02 12:30:54,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 288. [2024-11-02 12:30:54,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 286 states have (on average 2.304195804195804) internal successors, (659), 287 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 659 transitions. [2024-11-02 12:30:54,186 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 659 transitions. Word has length 25 [2024-11-02 12:30:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:54,187 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 659 transitions. [2024-11-02 12:30:54,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:54,187 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 659 transitions. [2024-11-02 12:30:54,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:30:54,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:54,189 INFO L215 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] [2024-11-02 12:30:54,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:30:54,190 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:30:54,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:54,190 INFO L85 PathProgramCache]: Analyzing trace with hash 193883265, now seen corresponding path program 5 times [2024-11-02 12:30:54,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:54,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858342820] [2024-11-02 12:30:54,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:54,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:55,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:55,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858342820] [2024-11-02 12:30:55,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858342820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:55,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:55,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-02 12:30:55,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231773077] [2024-11-02 12:30:55,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:55,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:30:55,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:55,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:30:55,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:30:55,623 INFO L87 Difference]: Start difference. First operand 288 states and 659 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:56,670 INFO L93 Difference]: Finished difference Result 463 states and 962 transitions. [2024-11-02 12:30:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-02 12:30:56,671 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:30:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:56,674 INFO L225 Difference]: With dead ends: 463 [2024-11-02 12:30:56,674 INFO L226 Difference]: Without dead ends: 461 [2024-11-02 12:30:56,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-02 12:30:56,675 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 103 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:56,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 47 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:30:56,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-11-02 12:30:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 291. [2024-11-02 12:30:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 289 states have (on average 2.301038062283737) internal successors, (665), 290 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:56,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 665 transitions. [2024-11-02 12:30:56,689 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 665 transitions. Word has length 25 [2024-11-02 12:30:56,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:56,690 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 665 transitions. [2024-11-02 12:30:56,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:56,690 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 665 transitions. [2024-11-02 12:30:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:30:56,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:56,692 INFO L215 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] [2024-11-02 12:30:56,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:30:56,692 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:30:56,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:56,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1955628393, now seen corresponding path program 6 times [2024-11-02 12:30:56,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:56,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286369075] [2024-11-02 12:30:56,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:56,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:57,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:57,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286369075] [2024-11-02 12:30:57,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286369075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:57,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:57,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-02 12:30:57,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136306766] [2024-11-02 12:30:57,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:57,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:30:57,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:57,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:30:57,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:30:57,804 INFO L87 Difference]: Start difference. First operand 291 states and 665 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:58,721 INFO L93 Difference]: Finished difference Result 417 states and 889 transitions. [2024-11-02 12:30:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:30:58,722 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:30:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:58,725 INFO L225 Difference]: With dead ends: 417 [2024-11-02 12:30:58,725 INFO L226 Difference]: Without dead ends: 415 [2024-11-02 12:30:58,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-02 12:30:58,727 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 76 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:58,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 52 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:30:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-02 12:30:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 294. [2024-11-02 12:30:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 292 states have (on average 2.297945205479452) internal successors, (671), 293 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 671 transitions. [2024-11-02 12:30:58,738 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 671 transitions. Word has length 25 [2024-11-02 12:30:58,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:58,738 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 671 transitions. [2024-11-02 12:30:58,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:30:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 671 transitions. [2024-11-02 12:30:58,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:30:58,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:58,740 INFO L215 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] [2024-11-02 12:30:58,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:30:58,741 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:30:58,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:58,741 INFO L85 PathProgramCache]: Analyzing trace with hash 162240029, now seen corresponding path program 7 times [2024-11-02 12:30:58,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:58,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598318713] [2024-11-02 12:30:58,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:58,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:59,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:59,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598318713] [2024-11-02 12:30:59,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598318713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:59,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:59,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-02 12:30:59,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233967760] [2024-11-02 12:30:59,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:59,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:30:59,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:59,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:30:59,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:30:59,918 INFO L87 Difference]: Start difference. First operand 294 states and 671 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:00,520 INFO L93 Difference]: Finished difference Result 436 states and 926 transitions. [2024-11-02 12:31:00,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:31:00,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:31:00,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:00,524 INFO L225 Difference]: With dead ends: 436 [2024-11-02 12:31:00,524 INFO L226 Difference]: Without dead ends: 434 [2024-11-02 12:31:00,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-02 12:31:00,526 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 98 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:00,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 39 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:31:00,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-02 12:31:00,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 294. [2024-11-02 12:31:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 292 states have (on average 2.297945205479452) internal successors, (671), 293 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:00,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 671 transitions. [2024-11-02 12:31:00,542 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 671 transitions. Word has length 25 [2024-11-02 12:31:00,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:00,542 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 671 transitions. [2024-11-02 12:31:00,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 671 transitions. [2024-11-02 12:31:00,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:31:00,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:00,544 INFO L215 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] [2024-11-02 12:31:00,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:31:00,545 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:31:00,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:00,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1080389967, now seen corresponding path program 8 times [2024-11-02 12:31:00,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:00,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167809206] [2024-11-02 12:31:00,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:00,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:01,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:01,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167809206] [2024-11-02 12:31:01,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167809206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:01,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:01,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-02 12:31:01,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386543345] [2024-11-02 12:31:01,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:01,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:31:01,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:01,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:31:01,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:31:01,568 INFO L87 Difference]: Start difference. First operand 294 states and 671 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:01,976 INFO L93 Difference]: Finished difference Result 432 states and 891 transitions. [2024-11-02 12:31:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 12:31:01,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:31:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:01,979 INFO L225 Difference]: With dead ends: 432 [2024-11-02 12:31:01,980 INFO L226 Difference]: Without dead ends: 430 [2024-11-02 12:31:01,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-02 12:31:01,981 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 90 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:01,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 41 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:31:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-02 12:31:01,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 292. [2024-11-02 12:31:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 290 states have (on average 2.2896551724137932) internal successors, (664), 291 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:01,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 664 transitions. [2024-11-02 12:31:01,993 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 664 transitions. Word has length 25 [2024-11-02 12:31:01,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:01,994 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 664 transitions. [2024-11-02 12:31:01,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 664 transitions. [2024-11-02 12:31:01,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:31:01,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:01,995 INFO L215 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] [2024-11-02 12:31:01,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 12:31:01,996 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:31:01,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:01,996 INFO L85 PathProgramCache]: Analyzing trace with hash 556334173, now seen corresponding path program 9 times [2024-11-02 12:31:01,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:01,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402916545] [2024-11-02 12:31:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:01,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:02,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:02,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402916545] [2024-11-02 12:31:02,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402916545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:02,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:02,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-02 12:31:02,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061257832] [2024-11-02 12:31:02,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:02,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:31:02,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:02,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:31:02,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:31:02,920 INFO L87 Difference]: Start difference. First operand 292 states and 664 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:03,323 INFO L93 Difference]: Finished difference Result 362 states and 773 transitions. [2024-11-02 12:31:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 12:31:03,323 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:31:03,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:03,326 INFO L225 Difference]: With dead ends: 362 [2024-11-02 12:31:03,326 INFO L226 Difference]: Without dead ends: 360 [2024-11-02 12:31:03,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-02 12:31:03,327 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 66 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:03,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 27 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:31:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-02 12:31:03,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 286. [2024-11-02 12:31:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 284 states have (on average 2.2992957746478875) internal successors, (653), 285 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:03,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 653 transitions. [2024-11-02 12:31:03,338 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 653 transitions. Word has length 25 [2024-11-02 12:31:03,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:03,339 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 653 transitions. [2024-11-02 12:31:03,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:03,339 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 653 transitions. [2024-11-02 12:31:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:31:03,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:03,340 INFO L215 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] [2024-11-02 12:31:03,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 12:31:03,341 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:31:03,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1800100323, now seen corresponding path program 10 times [2024-11-02 12:31:03,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:03,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767408606] [2024-11-02 12:31:03,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:03,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:04,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:04,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767408606] [2024-11-02 12:31:04,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767408606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:04,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:04,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-02 12:31:04,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971816340] [2024-11-02 12:31:04,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:04,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:31:04,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:04,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:31:04,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:31:04,691 INFO L87 Difference]: Start difference. First operand 286 states and 653 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:05,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:05,595 INFO L93 Difference]: Finished difference Result 539 states and 1166 transitions. [2024-11-02 12:31:05,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-02 12:31:05,596 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:31:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:05,599 INFO L225 Difference]: With dead ends: 539 [2024-11-02 12:31:05,600 INFO L226 Difference]: Without dead ends: 537 [2024-11-02 12:31:05,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-02 12:31:05,602 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 112 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:05,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 58 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:31:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-11-02 12:31:05,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 295. [2024-11-02 12:31:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 293 states have (on average 2.3208191126279862) internal successors, (680), 294 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:05,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 680 transitions. [2024-11-02 12:31:05,614 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 680 transitions. Word has length 25 [2024-11-02 12:31:05,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:05,615 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 680 transitions. [2024-11-02 12:31:05,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:05,616 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 680 transitions. [2024-11-02 12:31:05,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:31:05,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:05,617 INFO L215 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] [2024-11-02 12:31:05,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-02 12:31:05,617 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:31:05,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:05,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2085765105, now seen corresponding path program 11 times [2024-11-02 12:31:05,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:05,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630856630] [2024-11-02 12:31:05,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:05,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:06,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:06,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630856630] [2024-11-02 12:31:06,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630856630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:06,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:06,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-02 12:31:06,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830391139] [2024-11-02 12:31:06,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:06,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:31:06,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:06,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:31:06,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:31:06,932 INFO L87 Difference]: Start difference. First operand 295 states and 680 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:07,877 INFO L93 Difference]: Finished difference Result 531 states and 1128 transitions. [2024-11-02 12:31:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-02 12:31:07,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-02 12:31:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:07,881 INFO L225 Difference]: With dead ends: 531 [2024-11-02 12:31:07,882 INFO L226 Difference]: Without dead ends: 529 [2024-11-02 12:31:07,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-11-02 12:31:07,883 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 122 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:07,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 58 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:31:07,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-02 12:31:07,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 286. [2024-11-02 12:31:07,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 284 states have (on average 2.2992957746478875) internal successors, (653), 285 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:07,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 653 transitions. [2024-11-02 12:31:07,899 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 653 transitions. Word has length 25 [2024-11-02 12:31:07,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:07,899 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 653 transitions. [2024-11-02 12:31:07,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:07,900 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 653 transitions. [2024-11-02 12:31:07,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:31:07,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:07,901 INFO L215 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] [2024-11-02 12:31:07,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-02 12:31:07,902 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-02 12:31:07,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:07,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1275333987, now seen corresponding path program 12 times [2024-11-02 12:31:07,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:07,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986641735] [2024-11-02 12:31:07,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:07,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat