./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 05397c7941b2acd95b1b6d02c6c64b476ab8b290a5b56301ff8db7ca1986067b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:07:24,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:07:24,552 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 21:07:24,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:07:24,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:07:24,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:07:24,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:07:24,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:07:24,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:07:24,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:07:24,623 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:07:24,624 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:07:24,624 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:07:24,626 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:07:24,627 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:07:24,627 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:07:24,628 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:07:24,628 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:07:24,629 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:07:24,629 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:07:24,630 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:07:24,630 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:07:24,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:07:24,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:07:24,632 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:07:24,633 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:07:24,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:07:24,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:07:24,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:07:24,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:07:24,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:07:24,636 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:07:24,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:07:24,637 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:07:24,637 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:07:24,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:07:24,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:24,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:07:24,638 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:07:24,638 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:07:24,647 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:07:24,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:07:24,648 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:07:24,648 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:07:24,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:07:24,649 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_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05397c7941b2acd95b1b6d02c6c64b476ab8b290a5b56301ff8db7ca1986067b [2023-11-06 21:07:24,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:07:24,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:07:25,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:07:25,002 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:07:25,003 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:07:25,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/systemc/transmitter.15.cil.c [2023-11-06 21:07:28,134 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:07:28,428 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:07:28,433 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/sv-benchmarks/c/systemc/transmitter.15.cil.c [2023-11-06 21:07:28,457 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp/data/3e4c92a58/d4f0ad6538a84b858a34368cac91e71a/FLAG88a390ca7 [2023-11-06 21:07:28,475 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp/data/3e4c92a58/d4f0ad6538a84b858a34368cac91e71a [2023-11-06 21:07:28,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:07:28,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:07:28,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:28,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:07:28,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:07:28,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:28" (1/1) ... [2023-11-06 21:07:28,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f391c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:28, skipping insertion in model container [2023-11-06 21:07:28,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:28" (1/1) ... [2023-11-06 21:07:28,573 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:07:28,718 WARN L240 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_48532bbb-4915-4e5b-a5ba-084009772d9e/sv-benchmarks/c/systemc/transmitter.15.cil.c[706,719] [2023-11-06 21:07:28,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:28,917 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:07:28,929 WARN L240 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_48532bbb-4915-4e5b-a5ba-084009772d9e/sv-benchmarks/c/systemc/transmitter.15.cil.c[706,719] [2023-11-06 21:07:29,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:29,031 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:07:29,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29 WrapperNode [2023-11-06 21:07:29,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:29,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:29,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:07:29,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:07:29,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29" (1/1) ... [2023-11-06 21:07:29,057 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29" (1/1) ... [2023-11-06 21:07:29,120 INFO L138 Inliner]: procedures = 54, calls = 69, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 918 [2023-11-06 21:07:29,120 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:29,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:07:29,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:07:29,121 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:07:29,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29" (1/1) ... [2023-11-06 21:07:29,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29" (1/1) ... [2023-11-06 21:07:29,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29" (1/1) ... [2023-11-06 21:07:29,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29" (1/1) ... [2023-11-06 21:07:29,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29" (1/1) ... [2023-11-06 21:07:29,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29" (1/1) ... [2023-11-06 21:07:29,174 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29" (1/1) ... [2023-11-06 21:07:29,178 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29" (1/1) ... [2023-11-06 21:07:29,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:07:29,186 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:07:29,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:07:29,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:07:29,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29" (1/1) ... [2023-11-06 21:07:29,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:29,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:07:29,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:07:29,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48532bbb-4915-4e5b-a5ba-084009772d9e/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:07:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:07:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-06 21:07:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-06 21:07:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-06 21:07:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-06 21:07:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-06 21:07:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-06 21:07:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-06 21:07:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-06 21:07:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-06 21:07:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-06 21:07:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-06 21:07:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-06 21:07:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:07:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:07:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:07:29,516 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:07:29,518 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:07:30,516 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:07:31,223 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:07:31,223 INFO L302 CfgBuilder]: Removed 17 assume(true) statements. [2023-11-06 21:07:31,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:31 BoogieIcfgContainer [2023-11-06 21:07:31,228 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:07:31,232 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:07:31,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:07:31,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:07:31,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:07:28" (1/3) ... [2023-11-06 21:07:31,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9a0674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:31, skipping insertion in model container [2023-11-06 21:07:31,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:29" (2/3) ... [2023-11-06 21:07:31,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9a0674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:31, skipping insertion in model container [2023-11-06 21:07:31,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:31" (3/3) ... [2023-11-06 21:07:31,243 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.15.cil.c [2023-11-06 21:07:31,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:07:31,265 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:07:31,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:07:31,343 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@360f8b3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:07:31,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:07:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 172 states have (on average 1.5116279069767442) internal successors, (260), 174 states have internal predecessors, (260), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-06 21:07:31,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 21:07:31,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:31,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:31,364 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:07:31,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:31,370 INFO L85 PathProgramCache]: Analyzing trace with hash 536838258, now seen corresponding path program 1 times [2023-11-06 21:07:31,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:31,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757727228] [2023-11-06 21:07:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:31,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:32,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:32,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757727228] [2023-11-06 21:07:32,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757727228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:32,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:32,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:07:32,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924621702] [2023-11-06 21:07:32,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:32,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:07:32,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:32,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:07:32,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:32,242 INFO L87 Difference]: Start difference. First operand has 206 states, 172 states have (on average 1.5116279069767442) internal successors, (260), 174 states have internal predecessors, (260), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:32,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:32,826 INFO L93 Difference]: Finished difference Result 601 states and 940 transitions. [2023-11-06 21:07:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:07:32,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-06 21:07:32,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:32,842 INFO L225 Difference]: With dead ends: 601 [2023-11-06 21:07:32,843 INFO L226 Difference]: Without dead ends: 396 [2023-11-06 21:07:32,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:32,853 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 542 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:32,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 878 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:07:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-06 21:07:32,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 393. [2023-11-06 21:07:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 333 states have (on average 1.4714714714714714) internal successors, (490), 334 states have internal predecessors, (490), 47 states have call successors, (47), 12 states have call predecessors, (47), 12 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-06 21:07:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 584 transitions. [2023-11-06 21:07:32,938 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 584 transitions. Word has length 67 [2023-11-06 21:07:32,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:32,939 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 584 transitions. [2023-11-06 21:07:32,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 584 transitions. [2023-11-06 21:07:32,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 21:07:32,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:32,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:32,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:07:32,944 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:07:32,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:32,944 INFO L85 PathProgramCache]: Analyzing trace with hash 777105587, now seen corresponding path program 1 times [2023-11-06 21:07:32,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:32,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72662590] [2023-11-06 21:07:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:32,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:33,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:33,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72662590] [2023-11-06 21:07:33,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72662590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:33,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:33,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:07:33,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613911646] [2023-11-06 21:07:33,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:33,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:33,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:33,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:33,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:33,172 INFO L87 Difference]: Start difference. First operand 393 states and 584 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:34,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:34,136 INFO L93 Difference]: Finished difference Result 1350 states and 2030 transitions. [2023-11-06 21:07:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:07:34,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-06 21:07:34,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:34,148 INFO L225 Difference]: With dead ends: 1350 [2023-11-06 21:07:34,148 INFO L226 Difference]: Without dead ends: 935 [2023-11-06 21:07:34,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:07:34,157 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1161 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:34,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 1335 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 21:07:34,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2023-11-06 21:07:34,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 923. [2023-11-06 21:07:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 802 states have (on average 1.4600997506234414) internal successors, (1171), 791 states have internal predecessors, (1171), 92 states have call successors, (92), 26 states have call predecessors, (92), 28 states have return successors, (106), 106 states have call predecessors, (106), 92 states have call successors, (106) [2023-11-06 21:07:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1369 transitions. [2023-11-06 21:07:34,325 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1369 transitions. Word has length 67 [2023-11-06 21:07:34,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:34,326 INFO L495 AbstractCegarLoop]: Abstraction has 923 states and 1369 transitions. [2023-11-06 21:07:34,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:34,326 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1369 transitions. [2023-11-06 21:07:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 21:07:34,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:34,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:34,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:07:34,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:07:34,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:34,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1323735628, now seen corresponding path program 1 times [2023-11-06 21:07:34,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:34,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347758834] [2023-11-06 21:07:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:34,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:34,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:34,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347758834] [2023-11-06 21:07:34,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347758834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:34,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:34,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:07:34,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035436108] [2023-11-06 21:07:34,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:34,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:34,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:34,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:34,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:34,669 INFO L87 Difference]: Start difference. First operand 923 states and 1369 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:35,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:35,682 INFO L93 Difference]: Finished difference Result 3251 states and 4886 transitions. [2023-11-06 21:07:35,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:07:35,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-06 21:07:35,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:35,701 INFO L225 Difference]: With dead ends: 3251 [2023-11-06 21:07:35,701 INFO L226 Difference]: Without dead ends: 2282 [2023-11-06 21:07:35,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:07:35,707 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1161 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:35,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 1290 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 21:07:35,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2023-11-06 21:07:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1762. [2023-11-06 21:07:35,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1533 states have (on average 1.4644487932159165) internal successors, (2245), 1523 states have internal predecessors, (2245), 172 states have call successors, (172), 50 states have call predecessors, (172), 56 states have return successors, (213), 189 states have call predecessors, (213), 172 states have call successors, (213) [2023-11-06 21:07:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2630 transitions. [2023-11-06 21:07:35,866 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2630 transitions. Word has length 67 [2023-11-06 21:07:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:35,866 INFO L495 AbstractCegarLoop]: Abstraction has 1762 states and 2630 transitions. [2023-11-06 21:07:35,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:35,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2630 transitions. [2023-11-06 21:07:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 21:07:35,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:35,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:35,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:07:35,869 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:07:35,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:35,870 INFO L85 PathProgramCache]: Analyzing trace with hash 109099091, now seen corresponding path program 1 times [2023-11-06 21:07:35,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:35,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8039366] [2023-11-06 21:07:35,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:35,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:36,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:36,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:36,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8039366] [2023-11-06 21:07:36,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8039366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:36,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:36,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:07:36,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656483177] [2023-11-06 21:07:36,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:36,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:36,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:36,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:36,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:36,066 INFO L87 Difference]: Start difference. First operand 1762 states and 2630 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:37,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:37,032 INFO L93 Difference]: Finished difference Result 6134 states and 9307 transitions. [2023-11-06 21:07:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:07:37,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-06 21:07:37,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:37,065 INFO L225 Difference]: With dead ends: 6134 [2023-11-06 21:07:37,065 INFO L226 Difference]: Without dead ends: 4279 [2023-11-06 21:07:37,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:07:37,075 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1161 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:37,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 1052 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 21:07:37,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2023-11-06 21:07:37,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 3414. [2023-11-06 21:07:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3414 states, 2973 states have (on average 1.46552304069963) internal successors, (4357), 2967 states have internal predecessors, (4357), 328 states have call successors, (328), 98 states have call predecessors, (328), 112 states have return successors, (421), 349 states have call predecessors, (421), 328 states have call successors, (421) [2023-11-06 21:07:37,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 5106 transitions. [2023-11-06 21:07:37,463 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 5106 transitions. Word has length 67 [2023-11-06 21:07:37,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:37,463 INFO L495 AbstractCegarLoop]: Abstraction has 3414 states and 5106 transitions. [2023-11-06 21:07:37,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:37,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 5106 transitions. [2023-11-06 21:07:37,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 21:07:37,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:37,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:37,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:07:37,470 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:07:37,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:37,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2046415310, now seen corresponding path program 1 times [2023-11-06 21:07:37,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:37,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020835574] [2023-11-06 21:07:37,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:37,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:37,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:37,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020835574] [2023-11-06 21:07:37,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020835574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:37,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:37,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:07:37,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650948292] [2023-11-06 21:07:37,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:37,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:07:37,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:37,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:07:37,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:37,640 INFO L87 Difference]: Start difference. First operand 3414 states and 5106 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:38,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:38,522 INFO L93 Difference]: Finished difference Result 10175 states and 15493 transitions. [2023-11-06 21:07:38,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:07:38,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-06 21:07:38,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:38,587 INFO L225 Difference]: With dead ends: 10175 [2023-11-06 21:07:38,588 INFO L226 Difference]: Without dead ends: 6766 [2023-11-06 21:07:38,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:38,609 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 563 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:38,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 876 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:07:38,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6766 states. [2023-11-06 21:07:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6766 to 6746. [2023-11-06 21:07:39,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6746 states, 5885 states have (on average 1.4569243840271877) internal successors, (8574), 5873 states have internal predecessors, (8574), 636 states have call successors, (636), 196 states have call predecessors, (636), 224 states have return successors, (815), 677 states have call predecessors, (815), 636 states have call successors, (815) [2023-11-06 21:07:39,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6746 states to 6746 states and 10025 transitions. [2023-11-06 21:07:39,263 INFO L78 Accepts]: Start accepts. Automaton has 6746 states and 10025 transitions. Word has length 67 [2023-11-06 21:07:39,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:39,264 INFO L495 AbstractCegarLoop]: Abstraction has 6746 states and 10025 transitions. [2023-11-06 21:07:39,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:39,265 INFO L276 IsEmpty]: Start isEmpty. Operand 6746 states and 10025 transitions. [2023-11-06 21:07:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 21:07:39,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:39,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:39,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:07:39,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:07:39,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:39,270 INFO L85 PathProgramCache]: Analyzing trace with hash 483735377, now seen corresponding path program 1 times [2023-11-06 21:07:39,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:39,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817527024] [2023-11-06 21:07:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:39,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:39,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:39,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817527024] [2023-11-06 21:07:39,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817527024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:39,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:39,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:07:39,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459568353] [2023-11-06 21:07:39,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:39,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:39,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:39,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:39,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:39,416 INFO L87 Difference]: Start difference. First operand 6746 states and 10025 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:41,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:41,193 INFO L93 Difference]: Finished difference Result 22978 states and 34778 transitions. [2023-11-06 21:07:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:07:41,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-06 21:07:41,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:41,342 INFO L225 Difference]: With dead ends: 22978 [2023-11-06 21:07:41,342 INFO L226 Difference]: Without dead ends: 15865 [2023-11-06 21:07:41,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:07:41,384 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1161 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:41,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 1052 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 21:07:41,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15865 states. [2023-11-06 21:07:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15865 to 13187. [2023-11-06 21:07:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13187 states, 11510 states have (on average 1.455516941789748) internal successors, (16753), 11514 states have internal predecessors, (16753), 1228 states have call successors, (1228), 388 states have call predecessors, (1228), 448 states have return successors, (1599), 1285 states have call predecessors, (1599), 1228 states have call successors, (1599) [2023-11-06 21:07:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13187 states to 13187 states and 19580 transitions. [2023-11-06 21:07:42,654 INFO L78 Accepts]: Start accepts. Automaton has 13187 states and 19580 transitions. Word has length 67 [2023-11-06 21:07:42,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:42,657 INFO L495 AbstractCegarLoop]: Abstraction has 13187 states and 19580 transitions. [2023-11-06 21:07:42,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 13187 states and 19580 transitions. [2023-11-06 21:07:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 21:07:42,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:42,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:42,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:07:42,659 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:07:42,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:42,660 INFO L85 PathProgramCache]: Analyzing trace with hash 426591152, now seen corresponding path program 1 times [2023-11-06 21:07:42,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:42,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061438969] [2023-11-06 21:07:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:42,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:42,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:42,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061438969] [2023-11-06 21:07:42,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061438969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:42,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:42,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:07:42,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057039097] [2023-11-06 21:07:42,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:42,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:42,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:42,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:42,889 INFO L87 Difference]: Start difference. First operand 13187 states and 19580 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:45,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:45,514 INFO L93 Difference]: Finished difference Result 44333 states and 67091 transitions. [2023-11-06 21:07:45,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:07:45,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-06 21:07:45,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:45,688 INFO L225 Difference]: With dead ends: 44333 [2023-11-06 21:07:45,688 INFO L226 Difference]: Without dead ends: 30427 [2023-11-06 21:07:45,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:07:45,769 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1161 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:45,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 1052 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 21:07:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30427 states. [2023-11-06 21:07:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30427 to 25925. [2023-11-06 21:07:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25925 states, 22648 states have (on average 1.4531525962557401) internal successors, (32911), 22684 states have internal predecessors, (32911), 2380 states have call successors, (2380), 772 states have call predecessors, (2380), 896 states have return successors, (3119), 2469 states have call predecessors, (3119), 2380 states have call successors, (3119) [2023-11-06 21:07:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25925 states to 25925 states and 38410 transitions. [2023-11-06 21:07:48,507 INFO L78 Accepts]: Start accepts. Automaton has 25925 states and 38410 transitions. Word has length 67 [2023-11-06 21:07:48,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:48,508 INFO L495 AbstractCegarLoop]: Abstraction has 25925 states and 38410 transitions. [2023-11-06 21:07:48,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:48,509 INFO L276 IsEmpty]: Start isEmpty. Operand 25925 states and 38410 transitions. [2023-11-06 21:07:48,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 21:07:48,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:48,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:48,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:07:48,515 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:07:48,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:48,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1163803825, now seen corresponding path program 1 times [2023-11-06 21:07:48,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:48,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76254186] [2023-11-06 21:07:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:48,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:48,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:48,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:48,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76254186] [2023-11-06 21:07:48,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76254186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:48,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:48,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:07:48,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673588223] [2023-11-06 21:07:48,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:48,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:07:48,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:07:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:48,641 INFO L87 Difference]: Start difference. First operand 25925 states and 38410 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 21:07:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:52,106 INFO L93 Difference]: Finished difference Result 77316 states and 116534 transitions. [2023-11-06 21:07:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:07:52,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-06 21:07:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:52,424 INFO L225 Difference]: With dead ends: 77316 [2023-11-06 21:07:52,425 INFO L226 Difference]: Without dead ends: 51396 [2023-11-06 21:07:52,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:52,512 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 578 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:52,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 876 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:07:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51396 states.