./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire --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 8ff0a322ea14915785d13405f40f59a899d91f6127d01ad0d503cb7ec027b40c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:40:11,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:40:11,345 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:40:11,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:40:11,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:40:11,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:40:11,385 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:40:11,386 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:40:11,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:40:11,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:40:11,388 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:40:11,388 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:40:11,389 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:40:11,389 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:40:11,390 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:40:11,390 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:40:11,394 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:40:11,395 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:40:11,396 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:40:11,396 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:40:11,397 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:40:11,402 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:40:11,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:40:11,403 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:40:11,403 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:40:11,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:40:11,404 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:40:11,404 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:40:11,405 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:40:11,405 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:40:11,405 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:40:11,406 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:40:11,406 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:40:11,406 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:40:11,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:40:11,407 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:40:11,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:40:11,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:40:11,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:40:11,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:40:11,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:40:11,411 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:40:11,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:40:11,411 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:40:11,412 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:40:11,412 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:40:11,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:40:11,412 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_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ff0a322ea14915785d13405f40f59a899d91f6127d01ad0d503cb7ec027b40c [2023-11-23 20:40:11,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:40:11,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:40:11,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:40:11,795 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:40:11,795 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:40:11,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-1.c [2023-11-23 20:40:14,883 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:40:15,101 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:40:15,101 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-1.c [2023-11-23 20:40:15,121 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/data/d4cbe6a2d/6b7580c8008542dd8c1c4bd238e27927/FLAG2a2de62e6 [2023-11-23 20:40:15,138 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/data/d4cbe6a2d/6b7580c8008542dd8c1c4bd238e27927 [2023-11-23 20:40:15,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:40:15,147 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:40:15,152 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:40:15,152 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:40:15,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:40:15,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d672228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15, skipping insertion in model container [2023-11-23 20:40:15,163 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,215 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:40:15,377 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_8210f558-8338-49ea-978f-609df016fb20/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-1.c[911,924] [2023-11-23 20:40:15,445 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_8210f558-8338-49ea-978f-609df016fb20/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-1.c[8416,8429] [2023-11-23 20:40:15,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:40:15,495 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:40:15,513 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_8210f558-8338-49ea-978f-609df016fb20/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-1.c[911,924] [2023-11-23 20:40:15,581 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_8210f558-8338-49ea-978f-609df016fb20/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-1.c[8416,8429] [2023-11-23 20:40:15,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:40:15,652 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:40:15,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15 WrapperNode [2023-11-23 20:40:15,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:40:15,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:40:15,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:40:15,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:40:15,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,754 INFO L138 Inliner]: procedures = 57, calls = 64, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 448 [2023-11-23 20:40:15,754 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:40:15,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:40:15,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:40:15,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:40:15,766 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,783 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,784 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,803 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,807 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,815 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:40:15,816 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:40:15,816 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:40:15,816 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:40:15,817 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:40:15,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:15,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:40:15,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:40:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:40:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-23 20:40:15,902 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-23 20:40:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-23 20:40:15,902 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-23 20:40:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-23 20:40:15,903 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-23 20:40:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-23 20:40:15,903 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-23 20:40:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-23 20:40:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-23 20:40:15,904 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-23 20:40:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-23 20:40:15,904 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-23 20:40:15,905 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-23 20:40:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-23 20:40:15,906 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-23 20:40:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-23 20:40:15,906 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-23 20:40:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-23 20:40:15,908 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-23 20:40:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-23 20:40:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-23 20:40:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:40:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-23 20:40:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-23 20:40:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-23 20:40:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-23 20:40:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:40:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:40:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-23 20:40:15,912 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-23 20:40:16,035 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:40:16,038 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:40:16,698 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-11-23 20:40:16,699 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-11-23 20:40:16,746 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:40:16,901 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:40:16,902 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-23 20:40:16,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:16 BoogieIcfgContainer [2023-11-23 20:40:16,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:40:16,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:40:16,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:40:16,910 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:40:16,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:40:15" (1/3) ... [2023-11-23 20:40:16,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfd4e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:40:16, skipping insertion in model container [2023-11-23 20:40:16,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15" (2/3) ... [2023-11-23 20:40:16,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfd4e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:40:16, skipping insertion in model container [2023-11-23 20:40:16,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:16" (3/3) ... [2023-11-23 20:40:16,913 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.01.cil-1.c [2023-11-23 20:40:16,969 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:40:16,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 20:40:17,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:40:17,060 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=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;@41186cd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:40:17,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 20:40:17,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 100 states have (on average 1.47) internal successors, (147), 106 states have internal predecessors, (147), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-23 20:40:17,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 20:40:17,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:17,091 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] [2023-11-23 20:40:17,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:17,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:17,097 INFO L85 PathProgramCache]: Analyzing trace with hash 868430704, now seen corresponding path program 1 times [2023-11-23 20:40:17,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:17,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288989255] [2023-11-23 20:40:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:17,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:17,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:17,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288989255] [2023-11-23 20:40:17,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288989255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:17,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:17,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:40:17,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894599703] [2023-11-23 20:40:17,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:17,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:40:17,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:17,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:40:17,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:17,579 INFO L87 Difference]: Start difference. First operand has 148 states, 100 states have (on average 1.47) internal successors, (147), 106 states have internal predecessors, (147), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2023-11-23 20:40:18,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:18,196 INFO L93 Difference]: Finished difference Result 517 states and 744 transitions. [2023-11-23 20:40:18,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:40:18,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 34 [2023-11-23 20:40:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:18,214 INFO L225 Difference]: With dead ends: 517 [2023-11-23 20:40:18,214 INFO L226 Difference]: Without dead ends: 364 [2023-11-23 20:40:18,220 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 [2023-11-23 20:40:18,224 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 462 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:18,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 465 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:40:18,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-23 20:40:18,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 353. [2023-11-23 20:40:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 242 states have (on average 1.3264462809917354) internal successors, (321), 249 states have internal predecessors, (321), 72 states have call successors, (72), 38 states have call predecessors, (72), 37 states have return successors, (88), 67 states have call predecessors, (88), 70 states have call successors, (88) [2023-11-23 20:40:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 481 transitions. [2023-11-23 20:40:18,364 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 481 transitions. Word has length 34 [2023-11-23 20:40:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:18,365 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 481 transitions. [2023-11-23 20:40:18,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2023-11-23 20:40:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 481 transitions. [2023-11-23 20:40:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 20:40:18,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:18,369 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] [2023-11-23 20:40:18,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:40:18,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:18,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:18,370 INFO L85 PathProgramCache]: Analyzing trace with hash -637850763, now seen corresponding path program 1 times [2023-11-23 20:40:18,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:18,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964890262] [2023-11-23 20:40:18,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:18,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:18,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:18,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964890262] [2023-11-23 20:40:18,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964890262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:18,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:18,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:40:18,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547942336] [2023-11-23 20:40:18,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:18,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:18,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:18,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:18,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:18,482 INFO L87 Difference]: Start difference. First operand 353 states and 481 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-23 20:40:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:18,773 INFO L93 Difference]: Finished difference Result 553 states and 758 transitions. [2023-11-23 20:40:18,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:40:18,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 44 [2023-11-23 20:40:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:18,780 INFO L225 Difference]: With dead ends: 553 [2023-11-23 20:40:18,780 INFO L226 Difference]: Without dead ends: 482 [2023-11-23 20:40:18,782 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 [2023-11-23 20:40:18,784 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 252 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:18,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 372 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-11-23 20:40:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 471. [2023-11-23 20:40:18,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 326 states have (on average 1.3282208588957056) internal successors, (433), 333 states have internal predecessors, (433), 92 states have call successors, (92), 52 states have call predecessors, (92), 51 states have return successors, (111), 87 states have call predecessors, (111), 90 states have call successors, (111) [2023-11-23 20:40:18,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 636 transitions. [2023-11-23 20:40:18,851 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 636 transitions. Word has length 44 [2023-11-23 20:40:18,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:18,852 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 636 transitions. [2023-11-23 20:40:18,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-23 20:40:18,852 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 636 transitions. [2023-11-23 20:40:18,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-23 20:40:18,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:18,855 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] [2023-11-23 20:40:18,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:40:18,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:18,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:18,856 INFO L85 PathProgramCache]: Analyzing trace with hash 283067342, now seen corresponding path program 1 times [2023-11-23 20:40:18,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:18,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572544108] [2023-11-23 20:40:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:18,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:19,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:19,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572544108] [2023-11-23 20:40:19,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572544108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:19,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:19,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 20:40:19,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287274066] [2023-11-23 20:40:19,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:19,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:40:19,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:19,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:40:19,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:40:19,023 INFO L87 Difference]: Start difference. First operand 471 states and 636 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-23 20:40:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:19,888 INFO L93 Difference]: Finished difference Result 1008 states and 1359 transitions. [2023-11-23 20:40:19,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:40:19,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 45 [2023-11-23 20:40:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:19,896 INFO L225 Difference]: With dead ends: 1008 [2023-11-23 20:40:19,897 INFO L226 Difference]: Without dead ends: 542 [2023-11-23 20:40:19,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:40:19,907 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 626 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:19,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 683 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 20:40:19,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2023-11-23 20:40:19,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 457. [2023-11-23 20:40:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 312 states have (on average 1.2820512820512822) internal successors, (400), 319 states have internal predecessors, (400), 92 states have call successors, (92), 52 states have call predecessors, (92), 51 states have return successors, (108), 87 states have call predecessors, (108), 90 states have call successors, (108) [2023-11-23 20:40:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 600 transitions. [2023-11-23 20:40:19,995 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 600 transitions. Word has length 45 [2023-11-23 20:40:19,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:19,996 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 600 transitions. [2023-11-23 20:40:19,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-23 20:40:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 600 transitions. [2023-11-23 20:40:19,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 20:40:19,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:19,999 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] [2023-11-23 20:40:19,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:40:19,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:20,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1180030747, now seen corresponding path program 1 times [2023-11-23 20:40:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:20,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213727109] [2023-11-23 20:40:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:20,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:20,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:20,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213727109] [2023-11-23 20:40:20,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213727109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:20,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:20,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 20:40:20,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423533644] [2023-11-23 20:40:20,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:20,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:40:20,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:20,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:40:20,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:40:20,354 INFO L87 Difference]: Start difference. First operand 457 states and 600 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-23 20:40:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:21,062 INFO L93 Difference]: Finished difference Result 759 states and 968 transitions. [2023-11-23 20:40:21,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 20:40:21,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2023-11-23 20:40:21,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:21,067 INFO L225 Difference]: With dead ends: 759 [2023-11-23 20:40:21,067 INFO L226 Difference]: Without dead ends: 585 [2023-11-23 20:40:21,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-23 20:40:21,070 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 301 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:21,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 551 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:40:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-11-23 20:40:21,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 559. [2023-11-23 20:40:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 380 states have (on average 1.268421052631579) internal successors, (482), 387 states have internal predecessors, (482), 112 states have call successors, (112), 66 states have call predecessors, (112), 65 states have return successors, (128), 107 states have call predecessors, (128), 110 states have call successors, (128) [2023-11-23 20:40:21,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 722 transitions. [2023-11-23 20:40:21,166 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 722 transitions. Word has length 46 [2023-11-23 20:40:21,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:21,167 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 722 transitions. [2023-11-23 20:40:21,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-23 20:40:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 722 transitions. [2023-11-23 20:40:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 20:40:21,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:21,170 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] [2023-11-23 20:40:21,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:40:21,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:21,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash 495727131, now seen corresponding path program 1 times [2023-11-23 20:40:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:21,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140960557] [2023-11-23 20:40:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:21,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:21,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:21,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140960557] [2023-11-23 20:40:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140960557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:21,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:21,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:21,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107166797] [2023-11-23 20:40:21,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:21,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:21,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:21,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:21,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:21,238 INFO L87 Difference]: Start difference. First operand 559 states and 722 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 20:40:21,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:21,354 INFO L93 Difference]: Finished difference Result 824 states and 1058 transitions. [2023-11-23 20:40:21,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:21,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2023-11-23 20:40:21,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:21,357 INFO L225 Difference]: With dead ends: 824 [2023-11-23 20:40:21,357 INFO L226 Difference]: Without dead ends: 278 [2023-11-23 20:40:21,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:21,360 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 161 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:21,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 145 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:40:21,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-23 20:40:21,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2023-11-23 20:40:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 191 states have (on average 1.293193717277487) internal successors, (247), 195 states have internal predecessors, (247), 56 states have call successors, (56), 30 states have call predecessors, (56), 30 states have return successors, (74), 53 states have call predecessors, (74), 56 states have call successors, (74) [2023-11-23 20:40:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 377 transitions. [2023-11-23 20:40:21,399 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 377 transitions. Word has length 47 [2023-11-23 20:40:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:21,399 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 377 transitions. [2023-11-23 20:40:21,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 20:40:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 377 transitions. [2023-11-23 20:40:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 20:40:21,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:21,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:21,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 20:40:21,402 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:21,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:21,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1246875632, now seen corresponding path program 1 times [2023-11-23 20:40:21,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:21,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113398953] [2023-11-23 20:40:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:21,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:21,756 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 20:40:21,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:21,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113398953] [2023-11-23 20:40:21,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113398953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:21,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:21,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 20:40:21,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141685202] [2023-11-23 20:40:21,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:21,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:40:21,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:21,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:40:21,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:40:21,758 INFO L87 Difference]: Start difference. First operand 278 states and 377 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 20:40:21,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:21,998 INFO L93 Difference]: Finished difference Result 700 states and 944 transitions. [2023-11-23 20:40:21,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:40:21,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 60 [2023-11-23 20:40:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:22,004 INFO L225 Difference]: With dead ends: 700 [2023-11-23 20:40:22,004 INFO L226 Difference]: Without dead ends: 429 [2023-11-23 20:40:22,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-23 20:40:22,010 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 174 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:22,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 184 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:22,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-11-23 20:40:22,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 427. [2023-11-23 20:40:22,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 292 states have (on average 1.2671232876712328) internal successors, (370), 298 states have internal predecessors, (370), 86 states have call successors, (86), 48 states have call predecessors, (86), 48 states have return successors, (116), 81 states have call predecessors, (116), 86 states have call successors, (116) [2023-11-23 20:40:22,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 572 transitions. [2023-11-23 20:40:22,080 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 572 transitions. Word has length 60 [2023-11-23 20:40:22,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:22,081 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 572 transitions. [2023-11-23 20:40:22,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 20:40:22,081 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 572 transitions. [2023-11-23 20:40:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 20:40:22,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:22,083 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:22,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 20:40:22,084 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:22,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:22,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1831137045, now seen corresponding path program 1 times [2023-11-23 20:40:22,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:22,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731935994] [2023-11-23 20:40:22,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:22,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 20:40:22,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:22,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731935994] [2023-11-23 20:40:22,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731935994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:22,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:22,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:22,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624153851] [2023-11-23 20:40:22,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:22,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:22,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:22,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:22,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:22,181 INFO L87 Difference]: Start difference. First operand 427 states and 572 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 20:40:22,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:22,283 INFO L93 Difference]: Finished difference Result 887 states and 1197 transitions. [2023-11-23 20:40:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:22,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2023-11-23 20:40:22,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:22,290 INFO L225 Difference]: With dead ends: 887 [2023-11-23 20:40:22,291 INFO L226 Difference]: Without dead ends: 520 [2023-11-23 20:40:22,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:22,307 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 28 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:22,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 179 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:40:22,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-11-23 20:40:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 464. [2023-11-23 20:40:22,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 323 states have (on average 1.2724458204334366) internal successors, (411), 329 states have internal predecessors, (411), 89 states have call successors, (89), 51 states have call predecessors, (89), 51 states have return successors, (119), 84 states have call predecessors, (119), 89 states have call successors, (119) [2023-11-23 20:40:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 619 transitions. [2023-11-23 20:40:22,370 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 619 transitions. Word has length 62 [2023-11-23 20:40:22,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:22,371 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 619 transitions. [2023-11-23 20:40:22,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 20:40:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 619 transitions. [2023-11-23 20:40:22,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 20:40:22,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:22,374 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:22,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 20:40:22,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:22,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:22,375 INFO L85 PathProgramCache]: Analyzing trace with hash 537093229, now seen corresponding path program 1 times [2023-11-23 20:40:22,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:22,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135229562] [2023-11-23 20:40:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:22,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 20:40:22,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:22,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135229562] [2023-11-23 20:40:22,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135229562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:22,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183041528] [2023-11-23 20:40:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:22,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:22,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:22,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:22,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:40:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:22,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:40:22,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 20:40:22,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:22,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183041528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:22,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:40:22,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-23 20:40:22,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156683636] [2023-11-23 20:40:22,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:22,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:22,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:22,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:22,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:40:22,691 INFO L87 Difference]: Start difference. First operand 464 states and 619 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 20:40:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:22,801 INFO L93 Difference]: Finished difference Result 881 states and 1185 transitions. [2023-11-23 20:40:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:22,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 90 [2023-11-23 20:40:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:22,806 INFO L225 Difference]: With dead ends: 881 [2023-11-23 20:40:22,806 INFO L226 Difference]: Without dead ends: 543 [2023-11-23 20:40:22,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:40:22,808 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 59 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:22,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 94 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:40:22,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-11-23 20:40:22,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 528. [2023-11-23 20:40:22,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 378 states have (on average 1.2619047619047619) internal successors, (477), 383 states have internal predecessors, (477), 89 states have call successors, (89), 59 states have call predecessors, (89), 60 states have return successors, (117), 86 states have call predecessors, (117), 89 states have call successors, (117) [2023-11-23 20:40:22,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 683 transitions. [2023-11-23 20:40:22,933 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 683 transitions. Word has length 90 [2023-11-23 20:40:22,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:22,933 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 683 transitions. [2023-11-23 20:40:22,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 20:40:22,934 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 683 transitions. [2023-11-23 20:40:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 20:40:22,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:22,938 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:22,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:23,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:23,160 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:23,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:23,161 INFO L85 PathProgramCache]: Analyzing trace with hash -436395730, now seen corresponding path program 1 times [2023-11-23 20:40:23,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:23,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319268947] [2023-11-23 20:40:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:23,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-23 20:40:23,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:23,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319268947] [2023-11-23 20:40:23,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319268947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:23,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913614637] [2023-11-23 20:40:23,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:23,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:23,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:23,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:23,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:40:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:23,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:40:23,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 20:40:23,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:23,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913614637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:23,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:40:23,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-23 20:40:23,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915024654] [2023-11-23 20:40:23,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:23,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:23,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:23,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:23,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:40:23,500 INFO L87 Difference]: Start difference. First operand 528 states and 683 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 20:40:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:23,615 INFO L93 Difference]: Finished difference Result 1011 states and 1314 transitions. [2023-11-23 20:40:23,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:23,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 90 [2023-11-23 20:40:23,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:23,620 INFO L225 Difference]: With dead ends: 1011 [2023-11-23 20:40:23,620 INFO L226 Difference]: Without dead ends: 626 [2023-11-23 20:40:23,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:40:23,624 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 37 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:23,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 180 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:40:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-11-23 20:40:23,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 556. [2023-11-23 20:40:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 400 states have (on average 1.265) internal successors, (506), 405 states have internal predecessors, (506), 92 states have call successors, (92), 62 states have call predecessors, (92), 63 states have return successors, (120), 89 states have call predecessors, (120), 92 states have call successors, (120) [2023-11-23 20:40:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 718 transitions. [2023-11-23 20:40:23,699 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 718 transitions. Word has length 90 [2023-11-23 20:40:23,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:23,699 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 718 transitions. [2023-11-23 20:40:23,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 20:40:23,700 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 718 transitions. [2023-11-23 20:40:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 20:40:23,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:23,706 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:23,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:23,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:23,928 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:23,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:23,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1893448561, now seen corresponding path program 2 times [2023-11-23 20:40:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:23,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717983728] [2023-11-23 20:40:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:23,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 20:40:24,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717983728] [2023-11-23 20:40:24,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717983728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712813134] [2023-11-23 20:40:24,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:40:24,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:24,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:24,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:24,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 20:40:24,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 20:40:24,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:40:24,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:40:24,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 20:40:24,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:24,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712813134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:24,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:40:24,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-23 20:40:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346058806] [2023-11-23 20:40:24,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:24,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:24,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:40:24,346 INFO L87 Difference]: Start difference. First operand 556 states and 718 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 20:40:24,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:24,469 INFO L93 Difference]: Finished difference Result 1081 states and 1438 transitions. [2023-11-23 20:40:24,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:24,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2023-11-23 20:40:24,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:24,474 INFO L225 Difference]: With dead ends: 1081 [2023-11-23 20:40:24,474 INFO L226 Difference]: Without dead ends: 668 [2023-11-23 20:40:24,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:40:24,478 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 59 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:24,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 175 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:40:24,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2023-11-23 20:40:24,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 648. [2023-11-23 20:40:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 470 states have (on average 1.2468085106382978) internal successors, (586), 476 states have internal predecessors, (586), 105 states have call successors, (105), 72 states have call predecessors, (105), 72 states have return successors, (143), 100 states have call predecessors, (143), 105 states have call successors, (143) [2023-11-23 20:40:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 834 transitions. [2023-11-23 20:40:24,559 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 834 transitions. Word has length 90 [2023-11-23 20:40:24,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:24,561 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 834 transitions. [2023-11-23 20:40:24,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 20:40:24,561 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 834 transitions. [2023-11-23 20:40:24,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-23 20:40:24,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:24,564 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:24,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:24,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 20:40:24,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:24,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:24,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1938838937, now seen corresponding path program 1 times [2023-11-23 20:40:24,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:24,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856247759] [2023-11-23 20:40:24,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:24,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 20:40:24,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:24,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856247759] [2023-11-23 20:40:24,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856247759] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:24,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409129766] [2023-11-23 20:40:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:24,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:24,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:24,993 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:25,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 20:40:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:25,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:40:25,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 20:40:25,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:25,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409129766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:25,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:40:25,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-23 20:40:25,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558529473] [2023-11-23 20:40:25,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:25,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:25,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:25,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:40:25,175 INFO L87 Difference]: Start difference. First operand 648 states and 834 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 20:40:25,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:25,315 INFO L93 Difference]: Finished difference Result 1532 states and 1970 transitions. [2023-11-23 20:40:25,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:25,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2023-11-23 20:40:25,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:25,321 INFO L225 Difference]: With dead ends: 1532 [2023-11-23 20:40:25,322 INFO L226 Difference]: Without dead ends: 891 [2023-11-23 20:40:25,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:40:25,325 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 34 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:25,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 152 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:40:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2023-11-23 20:40:25,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 718. [2023-11-23 20:40:25,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 524 states have (on average 1.248091603053435) internal successors, (654), 531 states have internal predecessors, (654), 113 states have call successors, (113), 80 states have call predecessors, (113), 80 states have return successors, (151), 107 states have call predecessors, (151), 113 states have call successors, (151) [2023-11-23 20:40:25,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 918 transitions. [2023-11-23 20:40:25,441 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 918 transitions. Word has length 91 [2023-11-23 20:40:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:25,441 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 918 transitions. [2023-11-23 20:40:25,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 20:40:25,442 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 918 transitions. [2023-11-23 20:40:25,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 20:40:25,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:25,444 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:25,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:25,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:25,661 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:25,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:25,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1545650774, now seen corresponding path program 1 times [2023-11-23 20:40:25,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:25,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336067030] [2023-11-23 20:40:25,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:25,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 20:40:25,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:25,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336067030] [2023-11-23 20:40:25,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336067030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:25,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:25,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:40:25,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756331219] [2023-11-23 20:40:25,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:25,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:25,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:25,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:25,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:25,843 INFO L87 Difference]: Start difference. First operand 718 states and 918 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 20:40:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:26,153 INFO L93 Difference]: Finished difference Result 1736 states and 2192 transitions. [2023-11-23 20:40:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:40:26,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2023-11-23 20:40:26,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:26,161 INFO L225 Difference]: With dead ends: 1736 [2023-11-23 20:40:26,161 INFO L226 Difference]: Without dead ends: 1226 [2023-11-23 20:40:26,198 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 [2023-11-23 20:40:26,199 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 133 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:26,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 212 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:26,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2023-11-23 20:40:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1188. [2023-11-23 20:40:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 864 states have (on average 1.2384259259259258) internal successors, (1070), 868 states have internal predecessors, (1070), 191 states have call successors, (191), 132 states have call predecessors, (191), 132 states have return successors, (227), 188 states have call predecessors, (227), 191 states have call successors, (227) [2023-11-23 20:40:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1488 transitions. [2023-11-23 20:40:26,419 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1488 transitions. Word has length 93 [2023-11-23 20:40:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:26,420 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1488 transitions. [2023-11-23 20:40:26,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 20:40:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1488 transitions. [2023-11-23 20:40:26,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 20:40:26,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:26,423 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:26,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 20:40:26,423 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:26,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:26,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1944845237, now seen corresponding path program 1 times [2023-11-23 20:40:26,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:26,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435922259] [2023-11-23 20:40:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:26,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:26,637 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 20:40:26,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:26,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435922259] [2023-11-23 20:40:26,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435922259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:26,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116698169] [2023-11-23 20:40:26,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:26,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:26,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:26,641 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:26,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 20:40:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:26,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 20:40:26,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:40:26,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:26,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116698169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:26,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:40:26,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-23 20:40:26,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658849182] [2023-11-23 20:40:26,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:26,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 20:40:26,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:26,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 20:40:26,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-23 20:40:26,928 INFO L87 Difference]: Start difference. First operand 1188 states and 1488 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 20:40:27,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:27,238 INFO L93 Difference]: Finished difference Result 2129 states and 2661 transitions. [2023-11-23 20:40:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 20:40:27,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 100 [2023-11-23 20:40:27,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:27,246 INFO L225 Difference]: With dead ends: 2129 [2023-11-23 20:40:27,246 INFO L226 Difference]: Without dead ends: 1030 [2023-11-23 20:40:27,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-11-23 20:40:27,250 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 57 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:27,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 435 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:27,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2023-11-23 20:40:27,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 964. [2023-11-23 20:40:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 700 states have (on average 1.2242857142857142) internal successors, (857), 704 states have internal predecessors, (857), 155 states have call successors, (155), 108 states have call predecessors, (155), 108 states have return successors, (175), 152 states have call predecessors, (175), 155 states have call successors, (175) [2023-11-23 20:40:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1187 transitions. [2023-11-23 20:40:27,384 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1187 transitions. Word has length 100 [2023-11-23 20:40:27,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:27,385 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1187 transitions. [2023-11-23 20:40:27,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 20:40:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1187 transitions. [2023-11-23 20:40:27,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 20:40:27,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:27,388 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:27,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:27,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 20:40:27,604 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:27,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:27,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1532347915, now seen corresponding path program 1 times [2023-11-23 20:40:27,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:27,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168410] [2023-11-23 20:40:27,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:27,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 20:40:28,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:28,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168410] [2023-11-23 20:40:28,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168410] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:28,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926298279] [2023-11-23 20:40:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:28,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:28,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:28,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:28,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 20:40:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:28,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 20:40:28,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:40:28,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:28,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926298279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:28,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:40:28,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 22 [2023-11-23 20:40:28,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645391284] [2023-11-23 20:40:28,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:28,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 20:40:28,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 20:40:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-11-23 20:40:28,869 INFO L87 Difference]: Start difference. First operand 964 states and 1187 transitions. Second operand has 9 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 20:40:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:29,466 INFO L93 Difference]: Finished difference Result 1873 states and 2315 transitions. [2023-11-23 20:40:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 20:40:29,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 103 [2023-11-23 20:40:29,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:29,473 INFO L225 Difference]: With dead ends: 1873 [2023-11-23 20:40:29,473 INFO L226 Difference]: Without dead ends: 1042 [2023-11-23 20:40:29,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2023-11-23 20:40:29,477 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 214 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:29,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 212 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 20:40:29,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2023-11-23 20:40:29,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1002. [2023-11-23 20:40:29,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 734 states have (on average 1.2084468664850136) internal successors, (887), 738 states have internal predecessors, (887), 155 states have call successors, (155), 112 states have call predecessors, (155), 112 states have return successors, (175), 152 states have call predecessors, (175), 155 states have call successors, (175) [2023-11-23 20:40:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1217 transitions. [2023-11-23 20:40:29,734 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1217 transitions. Word has length 103 [2023-11-23 20:40:29,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:29,734 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1217 transitions. [2023-11-23 20:40:29,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 20:40:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1217 transitions. [2023-11-23 20:40:29,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 20:40:29,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:29,738 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:29,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:29,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 20:40:29,961 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:29,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:29,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1824968659, now seen corresponding path program 1 times [2023-11-23 20:40:29,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:29,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582436381] [2023-11-23 20:40:29,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:29,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 20:40:30,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:30,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582436381] [2023-11-23 20:40:30,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582436381] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:30,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202145566] [2023-11-23 20:40:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:30,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:30,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:30,278 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:30,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 20:40:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:30,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 20:40:30,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:30,516 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 20:40:30,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:40:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 20:40:30,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202145566] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:30,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 20:40:30,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 6] total 14 [2023-11-23 20:40:30,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533444151] [2023-11-23 20:40:30,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:30,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:40:30,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:40:30,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-23 20:40:30,707 INFO L87 Difference]: Start difference. First operand 1002 states and 1217 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 20:40:31,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:31,117 INFO L93 Difference]: Finished difference Result 2439 states and 2963 transitions. [2023-11-23 20:40:31,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:40:31,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 104 [2023-11-23 20:40:31,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:31,124 INFO L225 Difference]: With dead ends: 2439 [2023-11-23 20:40:31,124 INFO L226 Difference]: Without dead ends: 1073 [2023-11-23 20:40:31,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-23 20:40:31,128 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 49 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:31,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 206 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:31,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2023-11-23 20:40:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1025. [2023-11-23 20:40:31,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 726 states have (on average 1.1556473829201102) internal successors, (839), 731 states have internal predecessors, (839), 177 states have call successors, (177), 122 states have call predecessors, (177), 121 states have return successors, (197), 172 states have call predecessors, (197), 177 states have call successors, (197) [2023-11-23 20:40:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1213 transitions. [2023-11-23 20:40:31,313 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1213 transitions. Word has length 104 [2023-11-23 20:40:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:31,313 INFO L495 AbstractCegarLoop]: Abstraction has 1025 states and 1213 transitions. [2023-11-23 20:40:31,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 20:40:31,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1213 transitions. [2023-11-23 20:40:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-23 20:40:31,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:31,319 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:31,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 20:40:31,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 20:40:31,532 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:31,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash -642477149, now seen corresponding path program 1 times [2023-11-23 20:40:31,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:31,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188035018] [2023-11-23 20:40:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:31,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:31,885 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 64 proven. 39 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-23 20:40:31,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:31,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188035018] [2023-11-23 20:40:31,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188035018] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:31,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689280666] [2023-11-23 20:40:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:31,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:31,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:31,887 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:31,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 20:40:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:32,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 20:40:32,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 20:40:32,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:32,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689280666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:32,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:40:32,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2023-11-23 20:40:32,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966619799] [2023-11-23 20:40:32,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:32,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 20:40:32,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:32,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 20:40:32,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-23 20:40:32,124 INFO L87 Difference]: Start difference. First operand 1025 states and 1213 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 20:40:32,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:32,352 INFO L93 Difference]: Finished difference Result 1618 states and 1899 transitions. [2023-11-23 20:40:32,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 20:40:32,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 160 [2023-11-23 20:40:32,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:32,356 INFO L225 Difference]: With dead ends: 1618 [2023-11-23 20:40:32,356 INFO L226 Difference]: Without dead ends: 600 [2023-11-23 20:40:32,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-11-23 20:40:32,360 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 54 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:32,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 566 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2023-11-23 20:40:32,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 436. [2023-11-23 20:40:32,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 315 states have (on average 1.1238095238095238) internal successors, (354), 322 states have internal predecessors, (354), 67 states have call successors, (67), 49 states have call predecessors, (67), 53 states have return successors, (73), 65 states have call predecessors, (73), 67 states have call successors, (73) [2023-11-23 20:40:32,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 494 transitions. [2023-11-23 20:40:32,460 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 494 transitions. Word has length 160 [2023-11-23 20:40:32,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:32,460 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 494 transitions. [2023-11-23 20:40:32,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 20:40:32,461 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 494 transitions. [2023-11-23 20:40:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-23 20:40:32,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:32,464 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:32,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:32,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 20:40:32,685 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:32,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:32,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1645193159, now seen corresponding path program 2 times [2023-11-23 20:40:32,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:32,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384499359] [2023-11-23 20:40:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:32,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:32,761 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-23 20:40:32,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:32,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384499359] [2023-11-23 20:40:32,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384499359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:32,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020993760] [2023-11-23 20:40:32,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:40:32,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:32,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:32,763 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:32,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 20:40:32,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 20:40:32,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:40:32,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 20:40:32,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 20:40:33,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:33,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020993760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:33,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:40:33,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2023-11-23 20:40:33,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839497771] [2023-11-23 20:40:33,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:33,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:40:33,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:33,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:40:33,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:40:33,003 INFO L87 Difference]: Start difference. First operand 436 states and 494 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 20:40:33,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:33,236 INFO L93 Difference]: Finished difference Result 734 states and 833 transitions. [2023-11-23 20:40:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:40:33,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 161 [2023-11-23 20:40:33,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:33,237 INFO L225 Difference]: With dead ends: 734 [2023-11-23 20:40:33,237 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 20:40:33,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:40:33,240 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 38 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:33,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 212 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 20:40:33,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 20:40:33,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:33,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 20:40:33,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2023-11-23 20:40:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:33,241 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 20:40:33,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 20:40:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 20:40:33,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 20:40:33,244 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-23 20:40:33,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-23 20:40:33,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:33,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 20:40:33,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 20:40:44,050 INFO L899 garLoopResultBuilder]: For program point immediate_notifyEXIT(lines 915 925) no Hoare annotation was computed. [2023-11-23 20:40:44,050 INFO L899 garLoopResultBuilder]: For program point immediate_notifyFINAL(lines 915 925) no Hoare annotation was computed. [2023-11-23 20:40:44,051 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 915 925) the Hoare annotation is: (let ((.cse13 (= ~p_dw_pc~0 0)) (.cse14 (= ~t1_i~0 1)) (.cse10 (= |old(~t1_st~0)| ~t1_st~0)) (.cse11 (not (= ~m_st~0 0))) (.cse15 (= ~p_dw_st~0 0))) (let ((.cse1 (not (= ~E_M~0 2))) (.cse9 (= ~m_pc~0 1)) (.cse8 (not (= ~token~0 ~local~0))) (.cse0 (not .cse15)) (.cse2 (= |old(~m_st~0)| 0)) (.cse3 (not (= ~t1_pc~0 1))) (.cse4 (and .cse13 .cse14 .cse10 .cse15 .cse11 (= ~c_dr_pc~0 0))) (.cse5 (not .cse14)) (.cse6 (not .cse13)) (.cse7 (not (= ~c_dr_pc~0 ~p_dw_pc~0))) (.cse12 (< ~E_1~0 2))) (and (or .cse0 .cse1 .cse2 (< |old(~t1_st~0)| 2) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (or .cse0 .cse2 .cse3 .cse5 .cse6 .cse9 (and .cse10 .cse11) .cse7 .cse12) (or (not (= |old(~t1_st~0)| 0)) (not (= ~m_pc~0 ~t1_pc~0)) .cse0 .cse1 .cse2 .cse5 .cse6 .cse9 .cse7 (and (= ~t1_st~0 0) .cse11) .cse8) (or .cse0 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse12 (not (= (+ ~local~0 1) ~token~0)))))) [2023-11-23 20:40:44,051 INFO L899 garLoopResultBuilder]: For program point update_channels1EXIT(lines 262 276) no Hoare annotation was computed. [2023-11-23 20:40:44,051 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 262 276) the Hoare annotation is: true [2023-11-23 20:40:44,051 INFO L899 garLoopResultBuilder]: For program point L704(lines 704 709) no Hoare annotation was computed. [2023-11-23 20:40:44,051 INFO L899 garLoopResultBuilder]: For program point L733(lines 721 735) no Hoare annotation was computed. [2023-11-23 20:40:44,051 INFO L899 garLoopResultBuilder]: For program point L723(lines 723 728) no Hoare annotation was computed. [2023-11-23 20:40:44,052 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 890 914) the Hoare annotation is: (let ((.cse18 (= ~p_dw_pc~0 0)) (.cse19 (= ~t1_i~0 1)) (.cse11 (= |old(~t1_st~0)| ~t1_st~0)) (.cse12 (not (= ~m_st~0 0))) (.cse20 (= ~p_dw_st~0 0))) (let ((.cse14 (not (= |old(~t1_st~0)| 0))) (.cse15 (not (= ~m_pc~0 ~t1_pc~0))) (.cse16 (= ~t1_st~0 0)) (.cse10 (= ~m_pc~0 1)) (.cse17 (not (= ~E_1~0 2))) (.cse9 (not (= ~token~0 ~local~0))) (.cse0 (not .cse20)) (.cse1 (not (= ~E_M~0 2))) (.cse2 (= |old(~m_st~0)| 0)) (.cse3 (< |old(~t1_st~0)| 2)) (.cse4 (not (= ~t1_pc~0 1))) (.cse5 (and .cse18 .cse19 .cse11 .cse20 .cse12 (= ~c_dr_pc~0 0))) (.cse6 (not .cse19)) (.cse7 (not .cse18)) (.cse8 (not (= ~c_dr_pc~0 ~p_dw_pc~0))) (.cse13 (< ~E_1~0 2))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (or .cse0 .cse2 .cse4 .cse6 .cse7 .cse10 (and .cse11 .cse12) .cse8 .cse13) (or .cse14 .cse15 .cse0 .cse1 .cse2 .cse6 .cse7 .cse10 .cse8 (and .cse16 .cse12) .cse9) (or .cse0 .cse2 .cse4 .cse5 .cse6 .cse7 .cse8 .cse13 (not (= (+ ~local~0 1) ~token~0))) (or .cse14 .cse15 .cse0 .cse1 .cse17 .cse6 .cse16 .cse7 .cse10 .cse8 .cse9) (or .cse0 .cse1 .cse2 .cse4 .cse5 .cse17 .cse6 .cse7 .cse8 .cse13 .cse9) (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse13)))) [2023-11-23 20:40:44,052 INFO L899 garLoopResultBuilder]: For program point L703(lines 703 712) no Hoare annotation was computed. [2023-11-23 20:40:44,052 INFO L899 garLoopResultBuilder]: For program point L703-2(lines 703 712) no Hoare annotation was computed. [2023-11-23 20:40:44,052 INFO L899 garLoopResultBuilder]: For program point activate_threads2EXIT(lines 890 914) no Hoare annotation was computed. [2023-11-23 20:40:44,052 INFO L899 garLoopResultBuilder]: For program point L722(lines 722 731) no Hoare annotation was computed. [2023-11-23 20:40:44,052 INFO L899 garLoopResultBuilder]: For program point L722-2(lines 722 731) no Hoare annotation was computed. [2023-11-23 20:40:44,052 INFO L899 garLoopResultBuilder]: For program point L714(lines 702 716) no Hoare annotation was computed. [2023-11-23 20:40:44,053 INFO L899 garLoopResultBuilder]: For program point activate_threads1EXIT(lines 387 411) no Hoare annotation was computed. [2023-11-23 20:40:44,053 INFO L899 garLoopResultBuilder]: For program point L401(line 401) no Hoare annotation was computed. [2023-11-23 20:40:44,053 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 387 411) the Hoare annotation is: (or (= |old(~p_dw_st~0)| ~p_dw_st~0) (not (= ~m_pc~0 ~t1_pc~0)) (not (= ~c_dr_pc~0 0)) (= ~m_pc~0 1) (not (= ~p_dw_i~0 1))) [2023-11-23 20:40:44,053 INFO L895 garLoopResultBuilder]: At program point L393(line 393) the Hoare annotation is: (or (= |old(~p_dw_st~0)| ~p_dw_st~0) (not (= ~m_pc~0 ~t1_pc~0)) (not (= ~c_dr_pc~0 0)) (= ~m_pc~0 1) (not (= ~p_dw_i~0 1))) [2023-11-23 20:40:44,053 INFO L895 garLoopResultBuilder]: At program point L395-2(lines 395 399) the Hoare annotation is: (or (not (= ~m_pc~0 ~t1_pc~0)) (not (= ~c_dr_pc~0 0)) (= ~m_pc~0 1) (= ~p_dw_st~0 0) (not (= ~p_dw_i~0 1)) (not (= |old(~p_dw_st~0)| 0))) [2023-11-23 20:40:44,053 INFO L899 garLoopResultBuilder]: For program point L393-1(line 393) no Hoare annotation was computed. [2023-11-23 20:40:44,053 INFO L899 garLoopResultBuilder]: For program point update_channels2EXIT(lines 737 744) no Hoare annotation was computed. [2023-11-23 20:40:44,053 INFO L902 garLoopResultBuilder]: At program point update_channels2FINAL(lines 737 744) the Hoare annotation is: true [2023-11-23 20:40:44,054 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 834 861) the Hoare annotation is: (let ((.cse13 (= ~E_M~0 2))) (let ((.cse1 (= ~m_st~0 0)) (.cse2 (not (= ~t1_pc~0 1))) (.cse6 (< |old(~E_1~0)| 2)) (.cse7 (and (= ~E_1~0 |old(~E_1~0)|) .cse13)) (.cse0 (not (= ~p_dw_st~0 0))) (.cse9 (and .cse13 (= ~E_1~0 2))) (.cse10 (not (= 2 |old(~E_1~0)|))) (.cse3 (not (= 2 |old(~E_M~0)|))) (.cse4 (not (= ~t1_i~0 1))) (.cse5 (not (= ~p_dw_pc~0 0))) (.cse12 (= ~m_pc~0 1)) (.cse8 (not (= ~c_dr_pc~0 ~p_dw_pc~0))) (.cse11 (not (= ~token~0 ~local~0)))) (and (or (< ~t1_st~0 2) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (or .cse0 .cse9 .cse1 .cse2 .cse10 .cse3 .cse4 .cse5 .cse6 .cse8 .cse11) (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse12 .cse6 .cse7 .cse8) (or (not (= ~m_pc~0 ~t1_pc~0)) .cse0 .cse9 .cse10 .cse3 .cse4 .cse5 .cse12 .cse8 (not (= ~t1_st~0 0)) .cse11)))) [2023-11-23 20:40:44,054 INFO L899 garLoopResultBuilder]: For program point fire_delta_events2EXIT(lines 834 861) no Hoare annotation was computed. [2023-11-23 20:40:44,054 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 315 332) the Hoare annotation is: true [2023-11-23 20:40:44,054 INFO L899 garLoopResultBuilder]: For program point fire_delta_events1EXIT(lines 315 332) no Hoare annotation was computed. [2023-11-23 20:40:44,054 INFO L899 garLoopResultBuilder]: For program point L124(lines 102 126) no Hoare annotation was computed. [2023-11-23 20:40:44,054 INFO L899 garLoopResultBuilder]: For program point L114(lines 114 119) no Hoare annotation was computed. [2023-11-23 20:40:44,054 INFO L899 garLoopResultBuilder]: For program point L113-1(lines 113 122) no Hoare annotation was computed. [2023-11-23 20:40:44,055 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 99 127) the Hoare annotation is: true [2023-11-23 20:40:44,055 INFO L899 garLoopResultBuilder]: For program point L104(lines 104 109) no Hoare annotation was computed. [2023-11-23 20:40:44,055 INFO L899 garLoopResultBuilder]: For program point is_do_read_c_triggeredEXIT(lines 99 127) no Hoare annotation was computed. [2023-11-23 20:40:44,055 INFO L899 garLoopResultBuilder]: For program point L103(lines 103 112) no Hoare annotation was computed. [2023-11-23 20:40:44,055 INFO L899 garLoopResultBuilder]: For program point L103-2(lines 102 126) no Hoare annotation was computed. [2023-11-23 20:40:44,055 INFO L899 garLoopResultBuilder]: For program point L1026-2(lines 1026 1035) no Hoare annotation was computed. [2023-11-23 20:40:44,055 INFO L899 garLoopResultBuilder]: For program point L531(lines 531 535) no Hoare annotation was computed. [2023-11-23 20:40:44,055 INFO L899 garLoopResultBuilder]: For program point L432(lines 432 439) no Hoare annotation was computed. [2023-11-23 20:40:44,055 INFO L899 garLoopResultBuilder]: For program point do_write_p_returnLabel#1(lines 153 201) no Hoare annotation was computed. [2023-11-23 20:40:44,056 INFO L895 garLoopResultBuilder]: At program point L499-1(lines 499 536) the Hoare annotation is: (let ((.cse0 (= ~m_pc~0 ~t1_pc~0)) (.cse1 (not (= ~m_pc~0 1)))) (or (and .cse0 .cse1 (= ~c_dr_pc~0 1)) (and .cse0 .cse1 (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)))) [2023-11-23 20:40:44,056 INFO L899 garLoopResultBuilder]: For program point L599(line 599) no Hoare annotation was computed. [2023-11-23 20:40:44,056 INFO L899 garLoopResultBuilder]: For program point L1063(lines 1063 1069) no Hoare annotation was computed. [2023-11-23 20:40:44,056 INFO L895 garLoopResultBuilder]: At program point L1030(line 1030) the Hoare annotation is: (let ((.cse6 (= ~token~0 ~local~0)) (.cse7 (= ~E_1~0 2)) (.cse8 (= ~t1_pc~0 1)) (.cse0 (= ~p_dw_pc~0 0)) (.cse9 (<= 2 ~E_1~0)) (.cse1 (= ~t1_i~0 1)) (.cse2 (not (= ~m_pc~0 1))) (.cse3 (= ~p_dw_st~0 0)) (.cse10 (not (= ~m_st~0 0))) (.cse4 (= ~c_dr_pc~0 0)) (.cse5 (= ~E_M~0 2))) (or (and .cse0 .cse1 (= ~m_pc~0 ~t1_pc~0) .cse2 (= ~t1_st~0 0) .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 (<= 2 ~t1_st~0) .cse0 .cse9 .cse1 .cse3 .cse10 .cse4 .cse5) (and .cse8 .cse0 .cse1 .cse3 .cse10 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse1 .cse2 .cse3 .cse10 .cse4 .cse5))) [2023-11-23 20:40:44,056 INFO L899 garLoopResultBuilder]: For program point L1030-1(line 1030) no Hoare annotation was computed. [2023-11-23 20:40:44,056 INFO L899 garLoopResultBuilder]: For program point L799-1(lines 789 827) no Hoare annotation was computed. [2023-11-23 20:40:44,056 INFO L899 garLoopResultBuilder]: For program point L667(lines 667 675) no Hoare annotation was computed. [2023-11-23 20:40:44,056 INFO L895 garLoopResultBuilder]: At program point L172-1(lines 172 195) the Hoare annotation is: (let ((.cse0 (= ~m_pc~0 ~t1_pc~0)) (.cse1 (not (= ~m_pc~0 1)))) (or (and .cse0 .cse1 (= ~c_dr_pc~0 1)) (and .cse0 .cse1 (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)))) [2023-11-23 20:40:44,057 INFO L899 garLoopResultBuilder]: For program point start_simulation2_returnLabel#1(lines 992 1050) no Hoare annotation was computed. [2023-11-23 20:40:44,057 INFO L899 garLoopResultBuilder]: For program point L1065(lines 1065 1068) no Hoare annotation was computed. [2023-11-23 20:40:44,057 INFO L899 garLoopResultBuilder]: For program point master_returnLabel#1(lines 619 662) no Hoare annotation was computed. [2023-11-23 20:40:44,057 INFO L895 garLoopResultBuilder]: At program point L471(line 471) the Hoare annotation is: (let ((.cse0 (= ~m_pc~0 ~t1_pc~0)) (.cse1 (not (= ~m_pc~0 1)))) (or (and .cse0 .cse1 (= ~c_dr_pc~0 1)) (and .cse0 .cse1 (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)))) [2023-11-23 20:40:44,057 INFO L899 garLoopResultBuilder]: For program point L471-1(line 471) no Hoare annotation was computed. [2023-11-23 20:40:44,060 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 215) no Hoare annotation was computed. [2023-11-23 20:40:44,060 INFO L895 garLoopResultBuilder]: At program point L1000(line 1000) the Hoare annotation is: (and (= ~p_dw_pc~0 0) (= ~t1_i~0 1) (= ~m_pc~0 ~t1_pc~0) (= ~m_st~0 0) (not (= ~m_pc~0 1)) (= ~t1_st~0 0) (= ~p_dw_st~0 0) (= ~c_dr_pc~0 0) (= ~E_M~0 2) (= ~token~0 ~local~0) (= ~E_1~0 2)) [2023-11-23 20:40:44,065 INFO L899 garLoopResultBuilder]: For program point L1000-1(line 1000) no Hoare annotation was computed. [2023-11-23 20:40:44,065 INFO L899 garLoopResultBuilder]: For program point L802(lines 802 809) no Hoare annotation was computed. [2023-11-23 20:40:44,065 INFO L899 garLoopResultBuilder]: For program point L802-2(lines 802 809) no Hoare annotation was computed. [2023-11-23 20:40:44,065 INFO L899 garLoopResultBuilder]: For program point L670(lines 670 674) no Hoare annotation was computed. [2023-11-23 20:40:44,065 INFO L899 garLoopResultBuilder]: For program point start_simulation1_returnLabel#1(lines 484 542) no Hoare annotation was computed. [2023-11-23 20:40:44,065 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 254) no Hoare annotation was computed. [2023-11-23 20:40:44,066 INFO L895 garLoopResultBuilder]: At program point L1002(line 1002) the Hoare annotation is: (and (= ~p_dw_pc~0 0) (= ~t1_i~0 1) (= ~m_pc~0 ~t1_pc~0) (not (= ~m_pc~0 1)) (= ~t1_st~0 0) (= ~p_dw_st~0 0) (= ~c_dr_pc~0 0) (= ~E_M~0 2) (= ~token~0 ~local~0) (= ~E_1~0 2)) [2023-11-23 20:40:44,066 INFO L895 garLoopResultBuilder]: At program point L1002-1(line 1002) the Hoare annotation is: (and (= ~p_dw_pc~0 0) (= ~t1_i~0 1) (= ~m_pc~0 ~t1_pc~0) (not (= ~m_pc~0 1)) (= ~t1_st~0 0) (= ~p_dw_st~0 0) (= ~c_dr_pc~0 0) (= ~E_M~0 2) (= ~token~0 ~local~0) (= ~E_1~0 2)) [2023-11-23 20:40:44,066 INFO L899 garLoopResultBuilder]: For program point eval2_returnLabel#1(lines 783 833) no Hoare annotation was computed. [2023-11-23 20:40:44,066 INFO L895 garLoopResultBuilder]: At program point L507(line 507) the Hoare annotation is: (let ((.cse0 (= ~m_pc~0 ~t1_pc~0)) (.cse1 (not (= ~m_pc~0 1)))) (or (and .cse0 .cse1 (= ~c_dr_pc~0 1)) (and .cse0 .cse1 (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)))) [2023-11-23 20:40:44,066 INFO L899 garLoopResultBuilder]: For program point L507-1(line 507) no Hoare annotation was computed. [2023-11-23 20:40:44,067 INFO L899 garLoopResultBuilder]: For program point L243(lines 243 249) no Hoare annotation was computed. [2023-11-23 20:40:44,067 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 214) no Hoare annotation was computed. [2023-11-23 20:40:44,067 INFO L895 garLoopResultBuilder]: At program point L1003(line 1003) the Hoare annotation is: (and (= ~p_dw_pc~0 0) (= ~t1_i~0 1) (= ~m_pc~0 ~t1_pc~0) (not (= ~m_pc~0 1)) (= ~t1_st~0 0) (= ~p_dw_st~0 0) (= ~c_dr_pc~0 0) (= ~E_M~0 2) (= ~token~0 ~local~0) (= ~E_1~0 2)) [2023-11-23 20:40:44,067 INFO L895 garLoopResultBuilder]: At program point L640(line 640) the Hoare annotation is: (let ((.cse0 (= ~p_dw_pc~0 0)) (.cse1 (= ~t1_i~0 1)) (.cse2 (= ~p_dw_st~0 0)) (.cse3 (not (= ~m_st~0 0))) (.cse4 (= ~c_dr_pc~0 0)) (.cse5 (= ~E_M~0 2)) (.cse6 (= ~token~0 ~local~0))) (or (and (= ~t1_pc~0 1) (<= 2 ~t1_st~0) .cse0 .cse1 (<= 1 |ULTIMATE.start_eval2_~tmp~5#1|) .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 (= ~m_pc~0 ~t1_pc~0) (not (= ~m_pc~0 1)) (= ~t1_st~0 0) .cse2 .cse3 .cse4 .cse5 .cse6))) [2023-11-23 20:40:44,067 INFO L899 garLoopResultBuilder]: For program point L640-1(line 640) no Hoare annotation was computed. [2023-11-23 20:40:44,068 INFO L895 garLoopResultBuilder]: At program point L443(lines 418 458) the Hoare annotation is: (let ((.cse0 (= ~m_pc~0 ~t1_pc~0)) (.cse1 (not (= ~m_pc~0 1)))) (or (and .cse0 .cse1 (= ~c_dr_pc~0 1)) (and .cse0 .cse1 (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)))) [2023-11-23 20:40:44,068 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 187) no Hoare annotation was computed. [2023-11-23 20:40:44,068 INFO L899 garLoopResultBuilder]: For program point eval1_returnLabel#1(lines 412 464) no Hoare annotation was computed. [2023-11-23 20:40:44,068 INFO L899 garLoopResultBuilder]: For program point L1039(lines 1039 1043) no Hoare annotation was computed. [2023-11-23 20:40:44,068 INFO L895 garLoopResultBuilder]: At program point L511(line 511) the Hoare annotation is: (let ((.cse0 (= ~m_pc~0 ~t1_pc~0)) (.cse1 (not (= ~m_pc~0 1)))) (or (and .cse0 .cse1 (= ~c_dr_pc~0 1)) (and .cse0 .cse1 (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)))) [2023-11-23 20:40:44,068 INFO L895 garLoopResultBuilder]: At program point L511-1(line 511) the Hoare annotation is: (let ((.cse0 (= ~m_pc~0 ~t1_pc~0)) (.cse1 (not (= ~m_pc~0 1)))) (or (and .cse0 .cse1 (= ~c_dr_pc~0 1)) (and .cse0 .cse1 (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)))) [2023-11-23 20:40:44,069 INFO L895 garLoopResultBuilder]: At program point L247(line 247) the Hoare annotation is: false [2023-11-23 20:40:44,069 INFO L895 garLoopResultBuilder]: At program point L1007-1(lines 1007 1044) the Hoare annotation is: (let ((.cse6 (= ~token~0 ~local~0)) (.cse7 (= ~E_1~0 2)) (.cse8 (= ~t1_pc~0 1)) (.cse0 (= ~p_dw_pc~0 0)) (.cse9 (<= 2 ~E_1~0)) (.cse1 (= ~t1_i~0 1)) (.cse2 (not (= ~m_pc~0 1))) (.cse3 (= ~p_dw_st~0 0)) (.cse10 (not (= ~m_st~0 0))) (.cse4 (= ~c_dr_pc~0 0)) (.cse5 (= ~E_M~0 2))) (or (and .cse0 .cse1 (= ~m_pc~0 ~t1_pc~0) .cse2 (= ~t1_st~0 0) .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 (<= 2 ~t1_st~0) .cse0 .cse9 .cse1 .cse3 .cse10 .cse4 .cse5) (and .cse8 .cse0 .cse1 .cse3 .cse10 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse1 .cse2 .cse3 .cse10 .cse4 .cse5))) [2023-11-23 20:40:44,069 INFO L895 garLoopResultBuilder]: At program point L512(line 512) the Hoare annotation is: (let ((.cse0 (= ~m_pc~0 ~t1_pc~0)) (.cse1 (not (= ~m_pc~0 1)))) (or (and .cse0 .cse1 (= ~c_dr_pc~0 1)) (and .cse0 .cse1 (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)))) [2023-11-23 20:40:44,069 INFO L895 garLoopResultBuilder]: At program point L678-1(lines 678 691) the Hoare annotation is: (let ((.cse1 (<= 2 ~E_1~0)) (.cse0 (= ~p_dw_pc~0 0)) (.cse2 (= ~t1_i~0 1)) (.cse3 (= ~p_dw_st~0 0)) (.cse4 (= ~c_dr_pc~0 0)) (.cse5 (= ~E_M~0 2))) (or (and .cse0 .cse1 .cse2 (= (+ ~local~0 1) ~token~0) .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 (not (= ~m_st~0 0)) .cse4 .cse5) (and .cse0 .cse2 (not (= ~m_pc~0 1)) .cse3 .cse4 .cse5 (= ~token~0 ~local~0) (= ~E_1~0 2)))) [2023-11-23 20:40:44,069 INFO L895 garLoopResultBuilder]: At program point L513(line 513) the Hoare annotation is: (let ((.cse0 (= ~m_pc~0 ~t1_pc~0)) (.cse1 (not (= ~m_pc~0 1)))) (or (and .cse0 .cse1 (= ~c_dr_pc~0 1)) (and .cse0 .cse1 (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)))) [2023-11-23 20:40:44,070 INFO L899 garLoopResultBuilder]: For program point L447(lines 447 454) no Hoare annotation was computed. [2023-11-23 20:40:44,070 INFO L895 garLoopResultBuilder]: At program point L813-1(lines 789 827) the Hoare annotation is: (let ((.cse3 (= ~t1_st~0 0)) (.cse7 (= ~token~0 ~local~0)) (.cse8 (= ~E_1~0 2)) (.cse2 (not (= ~m_pc~0 1))) (.cse12 (not (= ~m_st~0 0))) (.cse9 (= ~t1_pc~0 1)) (.cse10 (<= 2 ~t1_st~0)) (.cse0 (= ~p_dw_pc~0 0)) (.cse11 (<= 2 ~E_1~0)) (.cse1 (= ~t1_i~0 1)) (.cse4 (= ~p_dw_st~0 0)) (.cse5 (= ~c_dr_pc~0 0)) (.cse6 (= ~E_M~0 2))) (or (and .cse0 .cse1 (= ~m_pc~0 ~t1_pc~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse9 .cse10 .cse0 .cse1 .cse2 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse1 (<= 2 ~m_st~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse9 .cse10 .cse0 .cse11 .cse1 .cse4 .cse12 .cse5 .cse6) (and .cse9 .cse0 .cse1 .cse4 .cse12 .cse5 .cse6 .cse7 .cse8) (and .cse9 .cse0 .cse11 .cse1 .cse2 .cse4 .cse12 .cse5 .cse6) (and .cse9 .cse10 .cse0 .cse11 .cse1 (= (+ ~local~0 1) ~token~0) .cse4 .cse5 .cse6))) [2023-11-23 20:40:44,070 INFO L895 garLoopResultBuilder]: At program point L648-1(lines 634 655) the Hoare annotation is: (let ((.cse0 (= ~t1_pc~0 1)) (.cse1 (<= 2 ~t1_st~0)) (.cse3 (<= 2 ~E_1~0)) (.cse5 (<= 1 |ULTIMATE.start_eval2_~tmp~5#1|)) (.cse2 (= ~p_dw_pc~0 0)) (.cse4 (= ~t1_i~0 1)) (.cse10 (not (= ~m_pc~0 1))) (.cse6 (= ~p_dw_st~0 0)) (.cse7 (not (= ~m_st~0 0))) (.cse8 (= ~c_dr_pc~0 0)) (.cse9 (= ~E_M~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= (+ ~local~0 1) ~token~0) .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse10 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse2 .cse4 (= ~m_pc~0 ~t1_pc~0) .cse10 (= ~t1_st~0 0) .cse6 .cse7 .cse8 .cse9 (= ~token~0 ~local~0) (= ~E_1~0 2)))) [2023-11-23 20:40:44,070 INFO L899 garLoopResultBuilder]: For program point L516(line 516) no Hoare annotation was computed. [2023-11-23 20:40:44,070 INFO L895 garLoopResultBuilder]: At program point L252(line 252) the Hoare annotation is: false [2023-11-23 20:40:44,071 INFO L895 garLoopResultBuilder]: At program point L252-1(lines 218 255) the Hoare annotation is: (and (= ~m_pc~0 ~t1_pc~0) (not (= ~m_pc~0 1))) [2023-11-23 20:40:44,071 INFO L895 garLoopResultBuilder]: At program point L979(line 979) the Hoare annotation is: (let ((.cse6 (= ~token~0 ~local~0)) (.cse7 (= ~E_1~0 2)) (.cse8 (= ~t1_pc~0 1)) (.cse0 (= ~p_dw_pc~0 0)) (.cse9 (<= 2 ~E_1~0)) (.cse1 (= ~t1_i~0 1)) (.cse2 (not (= ~m_pc~0 1))) (.cse3 (= ~p_dw_st~0 0)) (.cse10 (not (= ~m_st~0 0))) (.cse4 (= ~c_dr_pc~0 0)) (.cse5 (= ~E_M~0 2))) (or (and .cse0 .cse1 (= ~m_pc~0 ~t1_pc~0) .cse2 (= ~t1_st~0 0) .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 (<= 2 ~t1_st~0) .cse0 .cse9 .cse1 .cse3 .cse10 .cse4 .cse5) (and .cse8 .cse0 .cse1 .cse3 .cse10 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse1 .cse2 .cse3 .cse10 .cse4 .cse5))) [2023-11-23 20:40:44,071 INFO L899 garLoopResultBuilder]: For program point L979-1(line 979) no Hoare annotation was computed. [2023-11-23 20:40:44,071 INFO L899 garLoopResultBuilder]: For program point L518(lines 518 527) no Hoare annotation was computed. [2023-11-23 20:40:44,071 INFO L899 garLoopResultBuilder]: For program point L518-2(lines 518 527) no Hoare annotation was computed. [2023-11-23 20:40:44,071 INFO L895 garLoopResultBuilder]: At program point L419(line 419) the Hoare annotation is: (let ((.cse0 (= ~m_pc~0 ~t1_pc~0)) (.cse1 (not (= ~m_pc~0 1)))) (or (and .cse0 .cse1 (= ~c_dr_pc~0 1)) (and .cse0 .cse1 (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)))) [2023-11-23 20:40:44,072 INFO L899 garLoopResultBuilder]: For program point L816(lines 816 823) no Hoare annotation was computed. [2023-11-23 20:40:44,072 INFO L899 garLoopResultBuilder]: For program point L816-2(lines 816 823) no Hoare annotation was computed. [2023-11-23 20:40:44,072 INFO L895 garLoopResultBuilder]: At program point L1015(line 1015) the Hoare annotation is: (let ((.cse6 (= ~token~0 ~local~0)) (.cse7 (= ~E_1~0 2)) (.cse8 (= ~t1_pc~0 1)) (.cse0 (= ~p_dw_pc~0 0)) (.cse9 (<= 2 ~E_1~0)) (.cse1 (= ~t1_i~0 1)) (.cse2 (not (= ~m_pc~0 1))) (.cse3 (= ~p_dw_st~0 0)) (.cse10 (not (= ~m_st~0 0))) (.cse4 (= ~c_dr_pc~0 0)) (.cse5 (= ~E_M~0 2))) (or (and .cse0 .cse1 (= ~m_pc~0 ~t1_pc~0) .cse2 (= ~t1_st~0 0) .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 (<= 2 ~t1_st~0) .cse0 .cse9 .cse1 .cse3 .cse10 .cse4 .cse5) (and .cse8 .cse0 .cse1 .cse3 .cse10 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse1 .cse2 .cse3 .cse10 .cse4 .cse5))) [2023-11-23 20:40:44,072 INFO L899 garLoopResultBuilder]: For program point L1015-1(line 1015) no Hoare annotation was computed. [2023-11-23 20:40:44,072 INFO L899 garLoopResultBuilder]: For program point L421(line 421) no Hoare annotation was computed. [2023-11-23 20:40:44,073 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 20:40:44,073 INFO L899 garLoopResultBuilder]: For program point L157(lines 157 169) no Hoare annotation was computed. [2023-11-23 20:40:44,073 INFO L895 garLoopResultBuilder]: At program point L522(line 522) the Hoare annotation is: (let ((.cse0 (= ~m_pc~0 ~t1_pc~0)) (.cse1 (not (= ~m_pc~0 1)))) (or (and .cse0 .cse1 (= ~c_dr_pc~0 1)) (and .cse0 .cse1 (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)))) [2023-11-23 20:40:44,073 INFO L899 garLoopResultBuilder]: For program point L522-1(line 522) no Hoare annotation was computed. [2023-11-23 20:40:44,073 INFO L899 garLoopResultBuilder]: For program point L423(lines 423 427) no Hoare annotation was computed. [2023-11-23 20:40:44,073 INFO L899 garLoopResultBuilder]: For program point L423-1(lines 418 458) no Hoare annotation was computed. [2023-11-23 20:40:44,074 INFO L895 garLoopResultBuilder]: At program point L688(line 688) the Hoare annotation is: (let ((.cse0 (= ~t1_pc~0 1)) (.cse1 (= ~p_dw_pc~0 0)) (.cse2 (<= 2 ~E_1~0)) (.cse3 (= ~t1_i~0 1)) (.cse4 (= ~p_dw_st~0 0)) (.cse5 (not (= ~m_st~0 0))) (.cse6 (= ~c_dr_pc~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= (+ ~local~0 1) ~token~0) .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 (not (= ~m_pc~0 1)) .cse4 .cse5 .cse6))) [2023-11-23 20:40:44,074 INFO L899 garLoopResultBuilder]: For program point $Ultimate##38(lines 179 187) no Hoare annotation was computed. [2023-11-23 20:40:44,074 INFO L899 garLoopResultBuilder]: For program point L688-1(line 688) no Hoare annotation was computed. [2023-11-23 20:40:44,074 INFO L899 garLoopResultBuilder]: For program point L160(lines 160 168) no Hoare annotation was computed. [2023-11-23 20:40:44,074 INFO L895 garLoopResultBuilder]: At program point L1019(line 1019) the Hoare annotation is: (let ((.cse6 (= ~token~0 ~local~0)) (.cse7 (= ~E_1~0 2)) (.cse8 (= ~t1_pc~0 1)) (.cse0 (= ~p_dw_pc~0 0)) (.cse9 (<= 2 ~E_1~0)) (.cse1 (= ~t1_i~0 1)) (.cse2 (not (= ~m_pc~0 1))) (.cse3 (= ~p_dw_st~0 0)) (.cse10 (not (= ~m_st~0 0))) (.cse4 (= ~c_dr_pc~0 0)) (.cse5 (= ~E_M~0 2))) (or (and .cse0 .cse1 (= ~m_pc~0 ~t1_pc~0) .cse2 (= ~t1_st~0 0) .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 (<= 2 ~t1_st~0) .cse0 .cse9 .cse1 .cse3 .cse10 .cse4 .cse5) (and .cse8 .cse0 .cse1 .cse3 .cse10 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse1 .cse2 .cse3 .cse10 .cse4 .cse5))) [2023-11-23 20:40:44,074 INFO L895 garLoopResultBuilder]: At program point L1019-1(line 1019) the Hoare annotation is: (let ((.cse6 (= ~token~0 ~local~0)) (.cse7 (= ~E_1~0 2)) (.cse8 (= ~t1_pc~0 1)) (.cse0 (= ~p_dw_pc~0 0)) (.cse9 (<= 2 ~E_1~0)) (.cse1 (= ~t1_i~0 1)) (.cse2 (not (= ~m_pc~0 1))) (.cse3 (= ~p_dw_st~0 0)) (.cse10 (not (= ~m_st~0 0))) (.cse4 (= ~c_dr_pc~0 0)) (.cse5 (= ~E_M~0 2))) (or (and .cse0 .cse1 (= ~m_pc~0 ~t1_pc~0) .cse2 (= ~t1_st~0 0) .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 (<= 2 ~t1_st~0) .cse0 .cse9 .cse1 .cse3 .cse10 .cse4 .cse5) (and .cse8 .cse0 .cse1 .cse3 .cse10 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse1 .cse2 .cse3 .cse10 .cse4 .cse5))) [2023-11-23 20:40:44,075 INFO L899 garLoopResultBuilder]: For program point L623(lines 623 631) no Hoare annotation was computed. [2023-11-23 20:40:44,075 INFO L895 garLoopResultBuilder]: At program point L1020(line 1020) the Hoare annotation is: (let ((.cse6 (= ~token~0 ~local~0)) (.cse7 (= ~E_1~0 2)) (.cse8 (= ~t1_pc~0 1)) (.cse0 (= ~p_dw_pc~0 0)) (.cse9 (<= 2 ~E_1~0)) (.cse1 (= ~t1_i~0 1)) (.cse2 (not (= ~m_pc~0 1))) (.cse3 (= ~p_dw_st~0 0)) (.cse10 (not (= ~m_st~0 0))) (.cse4 (= ~c_dr_pc~0 0)) (.cse5 (= ~E_M~0 2))) (or (and .cse0 .cse1 (= ~m_pc~0 ~t1_pc~0) .cse2 (= ~t1_st~0 0) .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 (<= 2 ~t1_st~0) .cse0 .cse9 .cse1 .cse3 .cse10 .cse4 .cse5) (and .cse8 .cse0 .cse1 .cse3 .cse10 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse1 .cse2 .cse3 .cse10 .cse4 .cse5))) [2023-11-23 20:40:44,075 INFO L895 garLoopResultBuilder]: At program point L492(line 492) the Hoare annotation is: (and (= ~p_dw_pc~0 0) (= ~m_pc~0 ~t1_pc~0) (not (= ~m_pc~0 1)) (= ~p_dw_st~0 0) (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)) [2023-11-23 20:40:44,075 INFO L899 garLoopResultBuilder]: For program point L492-1(line 492) no Hoare annotation was computed. [2023-11-23 20:40:44,075 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 20:40:44,076 INFO L895 garLoopResultBuilder]: At program point L1021(line 1021) the Hoare annotation is: (let ((.cse6 (= ~token~0 ~local~0)) (.cse7 (= ~E_1~0 2)) (.cse8 (= ~t1_pc~0 1)) (.cse0 (= ~p_dw_pc~0 0)) (.cse9 (<= 2 ~E_1~0)) (.cse1 (= ~t1_i~0 1)) (.cse2 (not (= ~m_pc~0 1))) (.cse3 (= ~p_dw_st~0 0)) (.cse10 (not (= ~m_st~0 0))) (.cse4 (= ~c_dr_pc~0 0)) (.cse5 (= ~E_M~0 2))) (or (and .cse0 .cse1 (= ~m_pc~0 ~t1_pc~0) .cse2 (= ~t1_st~0 0) .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 (<= 2 ~t1_st~0) .cse0 .cse9 .cse1 .cse3 .cse10 .cse4 .cse5) (and .cse8 .cse0 .cse1 .cse3 .cse10 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse1 .cse2 .cse3 .cse10 .cse4 .cse5))) [2023-11-23 20:40:44,076 INFO L895 garLoopResultBuilder]: At program point L790(line 790) the Hoare annotation is: (let ((.cse3 (= ~t1_st~0 0)) (.cse7 (= ~token~0 ~local~0)) (.cse8 (= ~E_1~0 2)) (.cse2 (not (= ~m_pc~0 1))) (.cse12 (not (= ~m_st~0 0))) (.cse9 (= ~t1_pc~0 1)) (.cse10 (<= 2 ~t1_st~0)) (.cse0 (= ~p_dw_pc~0 0)) (.cse11 (<= 2 ~E_1~0)) (.cse1 (= ~t1_i~0 1)) (.cse4 (= ~p_dw_st~0 0)) (.cse5 (= ~c_dr_pc~0 0)) (.cse6 (= ~E_M~0 2))) (or (and .cse0 .cse1 (= ~m_pc~0 ~t1_pc~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse9 .cse10 .cse0 .cse1 .cse2 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse1 (<= 2 ~m_st~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse9 .cse10 .cse0 .cse11 .cse1 .cse4 .cse12 .cse5 .cse6) (and .cse9 .cse0 .cse1 .cse4 .cse12 .cse5 .cse6 .cse7 .cse8) (and .cse9 .cse0 .cse11 .cse1 .cse2 .cse4 .cse12 .cse5 .cse6) (and .cse9 .cse10 .cse0 .cse11 .cse1 (= (+ ~local~0 1) ~token~0) .cse4 .cse5 .cse6))) [2023-11-23 20:40:44,076 INFO L899 garLoopResultBuilder]: For program point L163(lines 163 167) no Hoare annotation was computed. [2023-11-23 20:40:44,076 INFO L899 garLoopResultBuilder]: For program point L626(lines 626 630) no Hoare annotation was computed. [2023-11-23 20:40:44,076 INFO L895 garLoopResultBuilder]: At program point L494(line 494) the Hoare annotation is: (and (= ~p_dw_pc~0 0) (= ~m_pc~0 ~t1_pc~0) (not (= ~m_pc~0 1)) (= ~p_dw_st~0 0) (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)) [2023-11-23 20:40:44,077 INFO L895 garLoopResultBuilder]: At program point L494-1(line 494) the Hoare annotation is: (and (= ~p_dw_pc~0 0) (= ~m_pc~0 ~t1_pc~0) (not (= ~m_pc~0 1)) (= ~p_dw_st~0 0) (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)) [2023-11-23 20:40:44,078 INFO L899 garLoopResultBuilder]: For program point L428(lines 418 458) no Hoare annotation was computed. [2023-11-23 20:40:44,078 INFO L899 garLoopResultBuilder]: For program point L792(line 792) no Hoare annotation was computed. [2023-11-23 20:40:44,078 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 599) no Hoare annotation was computed. [2023-11-23 20:40:44,078 INFO L895 garLoopResultBuilder]: At program point L495(line 495) the Hoare annotation is: (and (= ~p_dw_pc~0 0) (= ~m_pc~0 ~t1_pc~0) (not (= ~m_pc~0 1)) (= ~p_dw_st~0 0) (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)) [2023-11-23 20:40:44,078 INFO L899 garLoopResultBuilder]: For program point L1024(line 1024) no Hoare annotation was computed. [2023-11-23 20:40:44,078 INFO L899 garLoopResultBuilder]: For program point $Ultimate##115(lines 648 654) no Hoare annotation was computed. [2023-11-23 20:40:44,079 INFO L899 garLoopResultBuilder]: For program point L794(lines 794 798) no Hoare annotation was computed. [2023-11-23 20:40:44,079 INFO L899 garLoopResultBuilder]: For program point L794-1(lines 789 827) no Hoare annotation was computed. [2023-11-23 20:40:44,079 INFO L899 garLoopResultBuilder]: For program point L1026(lines 1026 1035) no Hoare annotation was computed. [2023-11-23 20:40:44,079 INFO L899 garLoopResultBuilder]: For program point L95(lines 73 97) no Hoare annotation was computed. [2023-11-23 20:40:44,079 INFO L899 garLoopResultBuilder]: For program point L85(lines 85 90) no Hoare annotation was computed. [2023-11-23 20:40:44,080 INFO L899 garLoopResultBuilder]: For program point L84-1(lines 84 93) no Hoare annotation was computed. [2023-11-23 20:40:44,080 INFO L899 garLoopResultBuilder]: For program point is_do_write_p_triggeredEXIT(lines 70 98) no Hoare annotation was computed. [2023-11-23 20:40:44,080 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 80) no Hoare annotation was computed. [2023-11-23 20:40:44,080 INFO L899 garLoopResultBuilder]: For program point L74(lines 74 83) no Hoare annotation was computed. [2023-11-23 20:40:44,080 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 70 98) the Hoare annotation is: true [2023-11-23 20:40:44,080 INFO L899 garLoopResultBuilder]: For program point L74-2(lines 73 97) no Hoare annotation was computed. [2023-11-23 20:40:44,080 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 295 314) the Hoare annotation is: true [2023-11-23 20:40:44,081 INFO L899 garLoopResultBuilder]: For program point exists_runnable_thread1EXIT(lines 295 314) no Hoare annotation was computed. [2023-11-23 20:40:44,081 INFO L902 garLoopResultBuilder]: At program point ERROR(lines 23 30) the Hoare annotation is: true [2023-11-23 20:40:44,081 INFO L899 garLoopResultBuilder]: For program point error1Err0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2023-11-23 20:40:44,081 INFO L899 garLoopResultBuilder]: For program point error1EXIT(lines 23 30) no Hoare annotation was computed. [2023-11-23 20:40:44,081 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 763 782) the Hoare annotation is: true [2023-11-23 20:40:44,081 INFO L899 garLoopResultBuilder]: For program point exists_runnable_thread2EXIT(lines 763 782) no Hoare annotation was computed. [2023-11-23 20:40:44,081 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 333 350) the Hoare annotation is: true [2023-11-23 20:40:44,082 INFO L899 garLoopResultBuilder]: For program point reset_delta_events1EXIT(lines 333 350) no Hoare annotation was computed. [2023-11-23 20:40:44,082 INFO L899 garLoopResultBuilder]: For program point reset_delta_events2EXIT(lines 862 889) no Hoare annotation was computed. [2023-11-23 20:40:44,082 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 862 889) the Hoare annotation is: (let ((.cse13 (= ~E_M~0 2))) (let ((.cse6 (< |old(~E_1~0)| 2)) (.cse7 (and (= ~E_1~0 |old(~E_1~0)|) .cse13)) (.cse1 (= ~m_st~0 0)) (.cse2 (not (= ~t1_pc~0 1))) (.cse0 (not (= ~p_dw_st~0 0))) (.cse10 (and .cse13 (= ~E_1~0 2))) (.cse11 (not (= 2 |old(~E_1~0)|))) (.cse3 (not (= 2 |old(~E_M~0)|))) (.cse4 (not (= ~t1_i~0 1))) (.cse5 (not (= ~p_dw_pc~0 0))) (.cse9 (= ~m_pc~0 1)) (.cse8 (not (= ~c_dr_pc~0 ~p_dw_pc~0))) (.cse12 (not (= ~token~0 ~local~0)))) (and (or (< ~t1_st~0 2) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse9 .cse6 .cse7 .cse8) (or .cse0 .cse10 .cse1 .cse2 .cse11 .cse3 .cse4 .cse5 .cse8 .cse12) (or (not (= ~m_pc~0 ~t1_pc~0)) .cse0 .cse10 .cse11 .cse3 .cse4 .cse5 .cse9 .cse8 (not (= ~t1_st~0 0)) .cse12)))) [2023-11-23 20:40:44,085 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:44,089 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:40:44,111 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~5 [2023-11-23 20:40:44,112 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~5 [2023-11-23 20:40:44,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:40:44 BoogieIcfgContainer [2023-11-23 20:40:44,130 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:40:44,131 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:40:44,131 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:40:44,131 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:40:44,132 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:16" (3/4) ... [2023-11-23 20:40:44,134 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 20:40:44,147 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure immediate_notify [2023-11-23 20:40:44,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure update_channels1 [2023-11-23 20:40:44,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure activate_threads2 [2023-11-23 20:40:44,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure activate_threads1 [2023-11-23 20:40:44,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure update_channels2 [2023-11-23 20:40:44,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fire_delta_events2 [2023-11-23 20:40:44,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fire_delta_events1 [2023-11-23 20:40:44,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure is_do_read_c_triggered [2023-11-23 20:40:44,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure is_do_write_p_triggered [2023-11-23 20:40:44,149 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure exists_runnable_thread1 [2023-11-23 20:40:44,149 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure error1 [2023-11-23 20:40:44,149 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure exists_runnable_thread2 [2023-11-23 20:40:44,149 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reset_delta_events1 [2023-11-23 20:40:44,149 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reset_delta_events2 [2023-11-23 20:40:44,178 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 82 nodes and edges [2023-11-23 20:40:44,179 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-23 20:40:44,181 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 20:40:44,182 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:40:44,404 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 20:40:44,405 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 20:40:44,405 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:40:44,406 INFO L158 Benchmark]: Toolchain (without parser) took 29259.16ms. Allocated memory was 153.1MB in the beginning and 524.3MB in the end (delta: 371.2MB). Free memory was 117.2MB in the beginning and 447.7MB in the end (delta: -330.5MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2023-11-23 20:40:44,406 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:40:44,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 501.71ms. Allocated memory is still 153.1MB. Free memory was 117.2MB in the beginning and 99.2MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:40:44,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.12ms. Allocated memory is still 153.1MB. Free memory was 99.2MB in the beginning and 96.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:40:44,407 INFO L158 Benchmark]: Boogie Preprocessor took 59.27ms. Allocated memory is still 153.1MB. Free memory was 96.7MB in the beginning and 94.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:40:44,408 INFO L158 Benchmark]: RCFGBuilder took 1088.17ms. Allocated memory is still 153.1MB. Free memory was 94.2MB in the beginning and 74.9MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 20:40:44,408 INFO L158 Benchmark]: TraceAbstraction took 27224.36ms. Allocated memory was 153.1MB in the beginning and 524.3MB in the end (delta: 371.2MB). Free memory was 74.3MB in the beginning and 460.3MB in the end (delta: -386.0MB). Peak memory consumption was 274.7MB. Max. memory is 16.1GB. [2023-11-23 20:40:44,408 INFO L158 Benchmark]: Witness Printer took 274.27ms. Allocated memory is still 524.3MB. Free memory was 460.3MB in the beginning and 447.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 20:40:44,417 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 501.71ms. Allocated memory is still 153.1MB. Free memory was 117.2MB in the beginning and 99.2MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.12ms. Allocated memory is still 153.1MB. Free memory was 99.2MB in the beginning and 96.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.27ms. Allocated memory is still 153.1MB. Free memory was 96.7MB in the beginning and 94.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1088.17ms. Allocated memory is still 153.1MB. Free memory was 94.2MB in the beginning and 74.9MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 27224.36ms. Allocated memory was 153.1MB in the beginning and 524.3MB in the end (delta: 371.2MB). Free memory was 74.3MB in the beginning and 460.3MB in the end (delta: -386.0MB). Peak memory consumption was 274.7MB. Max. memory is 16.1GB. * Witness Printer took 274.27ms. Allocated memory is still 524.3MB. Free memory was 460.3MB in the beginning and 447.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~5 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 599]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 27]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 148 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 27.1s, OverallIterations: 17, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2798 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2738 mSDsluCounter, 5023 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2896 mSDsCounter, 768 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3102 IncrementalHoareTripleChecker+Invalid, 3870 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 768 mSolverCounterUnsat, 2127 mSDtfsCounter, 3102 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1263 GetRequests, 1127 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1188occurred in iteration=12, InterpolantAutomatonStates: 106, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 17 MinimizatonAttempts, 825 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 52 LocationsWithAnnotation, 1703 PreInvPairs, 1984 NumberOfFragments, 3166 HoareAnnotationTreeSize, 1703 FomulaSimplifications, 23906 FormulaSimplificationTreeSizeReduction, 3.0s HoareSimplificationTime, 52 FomulaSimplificationsInter, 32779 FormulaSimplificationTreeSizeReductionInter, 7.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 2409 NumberOfCodeBlocks, 2303 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 2486 ConstructedInterpolants, 0 QuantifiedInterpolants, 4487 SizeOfPredicates, 13 NumberOfNonLiveVariables, 3688 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 27 InterpolantComputations, 17 PerfectInterpolantSequences, 1647/1783 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 262]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 499]: Loop Invariant Derived loop invariant: ((((m_pc == t1_pc) && !((m_pc == 1))) && (c_dr_pc == 1)) || ((((m_pc == t1_pc) && !((m_pc == 1))) && (c_dr_pc == 0)) && (p_dw_i == 1))) - InvariantResult [Line: 295]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 172]: Loop Invariant Derived loop invariant: ((((m_pc == t1_pc) && !((m_pc == 1))) && (c_dr_pc == 1)) || ((((m_pc == t1_pc) && !((m_pc == 1))) && (c_dr_pc == 0)) && (p_dw_i == 1))) - InvariantResult [Line: 634]: Loop Invariant Derived loop invariant: ((((((((((((t1_pc == 1) && (2 <= t1_st)) && (p_dw_pc == 0)) && (2 <= E_1)) && (t1_i == 1)) && ((local + 1) == token)) && (p_dw_st == 0)) && !((m_st == 0))) && (c_dr_pc == 0)) && (E_M == 2)) || ((((((((((t1_pc == 1) && (2 <= t1_st)) && (p_dw_pc == 0)) && (2 <= E_1)) && (t1_i == 1)) && !((m_pc == 1))) && (p_dw_st == 0)) && !((m_st == 0))) && (c_dr_pc == 0)) && (E_M == 2))) || (((((((((((p_dw_pc == 0) && (t1_i == 1)) && (m_pc == t1_pc)) && !((m_pc == 1))) && (t1_st == 0)) && (p_dw_st == 0)) && !((m_st == 0))) && (c_dr_pc == 0)) && (E_M == 2)) && (token == local)) && (E_1 == 2))) - InvariantResult [Line: 1007]: Loop Invariant Derived loop invariant: (((((((((((((p_dw_pc == 0) && (t1_i == 1)) && (m_pc == t1_pc)) && !((m_pc == 1))) && (t1_st == 0)) && (p_dw_st == 0)) && (c_dr_pc == 0)) && (E_M == 2)) && (token == local)) && (E_1 == 2)) || (((((((((t1_pc == 1) && (2 <= t1_st)) && (p_dw_pc == 0)) && (2 <= E_1)) && (t1_i == 1)) && (p_dw_st == 0)) && !((m_st == 0))) && (c_dr_pc == 0)) && (E_M == 2))) || (((((((((t1_pc == 1) && (p_dw_pc == 0)) && (t1_i == 1)) && (p_dw_st == 0)) && !((m_st == 0))) && (c_dr_pc == 0)) && (E_M == 2)) && (token == local)) && (E_1 == 2))) || (((((((((t1_pc == 1) && (p_dw_pc == 0)) && (2 <= E_1)) && (t1_i == 1)) && !((m_pc == 1))) && (p_dw_st == 0)) && !((m_st == 0))) && (c_dr_pc == 0)) && (E_M == 2))) - InvariantResult [Line: 789]: Loop Invariant Derived loop invariant: ((((((((((((((((p_dw_pc == 0) && (t1_i == 1)) && (m_pc == t1_pc)) && !((m_pc == 1))) && (t1_st == 0)) && (p_dw_st == 0)) && (c_dr_pc == 0)) && (E_M == 2)) && (token == local)) && (E_1 == 2)) || ((((((((((t1_pc == 1) && (2 <= t1_st)) && (p_dw_pc == 0)) && (t1_i == 1)) && !((m_pc == 1))) && (p_dw_st == 0)) && (c_dr_pc == 0)) && (E_M == 2)) && (token == local)) && (E_1 == 2))) || (((((((((p_dw_pc == 0) && (t1_i == 1)) && (2 <= m_st)) && (t1_st == 0)) && (p_dw_st == 0)) && (c_dr_pc == 0)) && (E_M == 2)) && (token == local)) && (E_1 == 2))) || (((((((((t1_pc == 1) && (2 <= t1_st)) && (p_dw_pc == 0)) && (2 <= E_1)) && (t1_i == 1)) && (p_dw_st == 0)) && !((m_st == 0))) && (c_dr_pc == 0)) && (E_M == 2))) || (((((((((t1_pc == 1) && (p_dw_pc == 0)) && (t1_i == 1)) && (p_dw_st == 0)) && !((m_st == 0))) && (c_dr_pc == 0)) && (E_M == 2)) && (token == local)) && (E_1 == 2))) || (((((((((t1_pc == 1) && (p_dw_pc == 0)) && (2 <= E_1)) && (t1_i == 1)) && !((m_pc == 1))) && (p_dw_st == 0)) && !((m_st == 0))) && (c_dr_pc == 0)) && (E_M == 2))) || (((((((((t1_pc == 1) && (2 <= t1_st)) && (p_dw_pc == 0)) && (2 <= E_1)) && (t1_i == 1)) && ((local + 1) == token)) && (p_dw_st == 0)) && (c_dr_pc == 0)) && (E_M == 2))) - InvariantResult [Line: 418]: Loop Invariant Derived loop invariant: ((((m_pc == t1_pc) && !((m_pc == 1))) && (c_dr_pc == 1)) || ((((m_pc == t1_pc) && !((m_pc == 1))) && (c_dr_pc == 0)) && (p_dw_i == 1))) - InvariantResult [Line: 763]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 678]: Loop Invariant Derived loop invariant: (((((((((p_dw_pc == 0) && (2 <= E_1)) && (t1_i == 1)) && ((local + 1) == token)) && (p_dw_st == 0)) && (c_dr_pc == 0)) && (E_M == 2)) || (((((((p_dw_pc == 0) && (2 <= E_1)) && (t1_i == 1)) && (p_dw_st == 0)) && !((m_st == 0))) && (c_dr_pc == 0)) && (E_M == 2))) || ((((((((p_dw_pc == 0) && (t1_i == 1)) && !((m_pc == 1))) && (p_dw_st == 0)) && (c_dr_pc == 0)) && (E_M == 2)) && (token == local)) && (E_1 == 2))) - InvariantResult [Line: 218]: Loop Invariant Derived loop invariant: ((m_pc == t1_pc) && !((m_pc == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-23 20:40:44,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8210f558-8338-49ea-978f-609df016fb20/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE