./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.01.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh --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 ea17b00cb6ed3e05e0ac7861fb220a62ceca6ba97bc4fe703ce3eb0d0ec5cbfe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:40:43,351 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:40:43,414 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 14:40:43,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:40:43,419 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:40:43,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:40:43,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:40:43,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:40:43,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:40:43,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:40:43,445 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:40:43,446 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:40:43,446 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:40:43,447 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:40:43,447 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:40:43,448 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:40:43,448 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:40:43,449 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:40:43,449 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:40:43,450 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:40:43,450 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:40:43,451 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:40:43,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:40:43,452 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:40:43,452 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:40:43,453 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:40:43,453 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:40:43,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:40:43,454 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:40:43,454 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:40:43,454 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:40:43,455 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:40:43,455 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:40:43,455 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:40:43,455 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:40:43,456 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:40:43,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:40:43,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:40:43,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:40:43,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:40:43,457 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:40:43,457 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:40:43,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:40:43,457 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:40:43,458 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:40:43,458 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:40:43,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:40:43,458 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_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea17b00cb6ed3e05e0ac7861fb220a62ceca6ba97bc4fe703ce3eb0d0ec5cbfe [2023-12-02 14:40:43,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:40:43,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:40:43,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:40:43,676 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:40:43,677 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:40:43,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/systemc/transmitter.01.cil.c [2023-12-02 14:40:46,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:40:46,641 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:40:46,642 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/sv-benchmarks/c/systemc/transmitter.01.cil.c [2023-12-02 14:40:46,650 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/data/c9d5986a1/922798e9a02a41b3aab0bf600e4c045f/FLAG3b51ce548 [2023-12-02 14:40:47,031 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/data/c9d5986a1/922798e9a02a41b3aab0bf600e4c045f [2023-12-02 14:40:47,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:40:47,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:40:47,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:40:47,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:40:47,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:40:47,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:40:47" (1/1) ... [2023-12-02 14:40:47,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147a36c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47, skipping insertion in model container [2023-12-02 14:40:47,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:40:47" (1/1) ... [2023-12-02 14:40:47,072 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:40:47,183 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_7408cfda-69c3-416d-9be8-e4d9b6dc098e/sv-benchmarks/c/systemc/transmitter.01.cil.c[706,719] [2023-12-02 14:40:47,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:40:47,231 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:40:47,240 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_7408cfda-69c3-416d-9be8-e4d9b6dc098e/sv-benchmarks/c/systemc/transmitter.01.cil.c[706,719] [2023-12-02 14:40:47,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:40:47,273 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:40:47,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47 WrapperNode [2023-12-02 14:40:47,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:40:47,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:40:47,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:40:47,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:40:47,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47" (1/1) ... [2023-12-02 14:40:47,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47" (1/1) ... [2023-12-02 14:40:47,315 INFO L138 Inliner]: procedures = 30, calls = 33, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 212 [2023-12-02 14:40:47,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:40:47,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:40:47,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:40:47,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:40:47,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47" (1/1) ... [2023-12-02 14:40:47,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47" (1/1) ... [2023-12-02 14:40:47,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47" (1/1) ... [2023-12-02 14:40:47,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47" (1/1) ... [2023-12-02 14:40:47,333 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47" (1/1) ... [2023-12-02 14:40:47,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47" (1/1) ... [2023-12-02 14:40:47,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47" (1/1) ... [2023-12-02 14:40:47,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47" (1/1) ... [2023-12-02 14:40:47,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:40:47,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:40:47,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:40:47,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:40:47,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47" (1/1) ... [2023-12-02 14:40:47,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:40:47,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:40:47,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:40:47,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:40:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:40:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-02 14:40:47,411 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-02 14:40:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-02 14:40:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-02 14:40:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-02 14:40:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-02 14:40:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-02 14:40:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-02 14:40:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:40:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-02 14:40:47,413 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-02 14:40:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:40:47,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:40:47,473 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:40:47,475 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:40:47,715 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:40:47,817 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:40:47,817 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-02 14:40:47,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:40:47 BoogieIcfgContainer [2023-12-02 14:40:47,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:40:47,822 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:40:47,822 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:40:47,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:40:47,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:40:47" (1/3) ... [2023-12-02 14:40:47,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d38372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:40:47, skipping insertion in model container [2023-12-02 14:40:47,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:40:47" (2/3) ... [2023-12-02 14:40:47,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d38372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:40:47, skipping insertion in model container [2023-12-02 14:40:47,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:40:47" (3/3) ... [2023-12-02 14:40:47,828 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2023-12-02 14:40:47,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:40:47,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:40:47,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:40:47,891 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;@1f8fd4b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:40:47,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:40:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 46 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:40:47,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 14:40:47,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:40:47,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:40:47,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:40:47,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:40:47,908 INFO L85 PathProgramCache]: Analyzing trace with hash -520714470, now seen corresponding path program 1 times [2023-12-02 14:40:47,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:40:47,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659956513] [2023-12-02 14:40:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:40:47,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:40:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:40:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:40:48,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:40:48,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659956513] [2023-12-02 14:40:48,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659956513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:40:48,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:40:48,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:40:48,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580318690] [2023-12-02 14:40:48,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:40:48,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:40:48,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:40:48,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:40:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:40:48,223 INFO L87 Difference]: Start difference. First operand has 64 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 46 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-12-02 14:40:48,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:40:48,434 INFO L93 Difference]: Finished difference Result 179 states and 253 transitions. [2023-12-02 14:40:48,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:40:48,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 33 [2023-12-02 14:40:48,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:40:48,445 INFO L225 Difference]: With dead ends: 179 [2023-12-02 14:40:48,446 INFO L226 Difference]: Without dead ends: 116 [2023-12-02 14:40:48,449 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 [2023-12-02 14:40:48,453 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 142 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:40:48,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 186 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:40:48,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-02 14:40:48,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2023-12-02 14:40:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 81 states have internal predecessors, (103), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 14:40:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 147 transitions. [2023-12-02 14:40:48,503 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 147 transitions. Word has length 33 [2023-12-02 14:40:48,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:40:48,503 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 147 transitions. [2023-12-02 14:40:48,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-12-02 14:40:48,504 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 147 transitions. [2023-12-02 14:40:48,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 14:40:48,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:40:48,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:40:48,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:40:48,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:40:48,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:40:48,507 INFO L85 PathProgramCache]: Analyzing trace with hash 259266459, now seen corresponding path program 1 times [2023-12-02 14:40:48,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:40:48,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811192177] [2023-12-02 14:40:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:40:48,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:40:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:40:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:40:48,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:40:48,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811192177] [2023-12-02 14:40:48,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811192177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:40:48,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:40:48,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 14:40:48,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969796368] [2023-12-02 14:40:48,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:40:48,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:40:48,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:40:48,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:40:48,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:40:48,735 INFO L87 Difference]: Start difference. First operand 112 states and 147 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 14:40:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:40:49,017 INFO L93 Difference]: Finished difference Result 282 states and 366 transitions. [2023-12-02 14:40:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:40:49,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 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 33 [2023-12-02 14:40:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:40:49,022 INFO L225 Difference]: With dead ends: 282 [2023-12-02 14:40:49,022 INFO L226 Difference]: Without dead ends: 176 [2023-12-02 14:40:49,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:40:49,025 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 172 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:40:49,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 181 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:40:49,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-02 14:40:49,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 167. [2023-12-02 14:40:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 122 states have internal predecessors, (155), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-02 14:40:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 215 transitions. [2023-12-02 14:40:49,061 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 215 transitions. Word has length 33 [2023-12-02 14:40:49,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:40:49,062 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 215 transitions. [2023-12-02 14:40:49,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 14:40:49,062 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 215 transitions. [2023-12-02 14:40:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 14:40:49,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:40:49,064 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] [2023-12-02 14:40:49,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:40:49,065 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:40:49,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:40:49,065 INFO L85 PathProgramCache]: Analyzing trace with hash -906905426, now seen corresponding path program 1 times [2023-12-02 14:40:49,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:40:49,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997754618] [2023-12-02 14:40:49,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:40:49,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:40:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:40:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:40:49,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:40:49,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997754618] [2023-12-02 14:40:49,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997754618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:40:49,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:40:49,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:40:49,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840361810] [2023-12-02 14:40:49,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:40:49,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:40:49,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:40:49,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:40:49,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:40:49,126 INFO L87 Difference]: Start difference. First operand 167 states and 215 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 14:40:49,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:40:49,208 INFO L93 Difference]: Finished difference Result 481 states and 621 transitions. [2023-12-02 14:40:49,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:40:49,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2023-12-02 14:40:49,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:40:49,213 INFO L225 Difference]: With dead ends: 481 [2023-12-02 14:40:49,213 INFO L226 Difference]: Without dead ends: 319 [2023-12-02 14:40:49,214 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 [2023-12-02 14:40:49,216 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 59 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:40:49,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 139 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:40:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-12-02 14:40:49,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 316. [2023-12-02 14:40:49,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 227 states have (on average 1.2466960352422907) internal successors, (283), 230 states have internal predecessors, (283), 56 states have call successors, (56), 32 states have call predecessors, (56), 32 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-02 14:40:49,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 395 transitions. [2023-12-02 14:40:49,274 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 395 transitions. Word has length 35 [2023-12-02 14:40:49,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:40:49,275 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 395 transitions. [2023-12-02 14:40:49,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 14:40:49,276 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 395 transitions. [2023-12-02 14:40:49,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 14:40:49,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:40:49,278 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 14:40:49,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:40:49,279 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:40:49,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:40:49,280 INFO L85 PathProgramCache]: Analyzing trace with hash -688393263, now seen corresponding path program 1 times [2023-12-02 14:40:49,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:40:49,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870227185] [2023-12-02 14:40:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:40:49,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:40:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:40:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 14:40:49,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:40:49,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870227185] [2023-12-02 14:40:49,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870227185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:40:49,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:40:49,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:40:49,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23471582] [2023-12-02 14:40:49,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:40:49,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:40:49,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:40:49,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:40:49,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:40:49,360 INFO L87 Difference]: Start difference. First operand 316 states and 395 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 14:40:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:40:49,441 INFO L93 Difference]: Finished difference Result 580 states and 731 transitions. [2023-12-02 14:40:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:40:49,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-12-02 14:40:49,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:40:49,445 INFO L225 Difference]: With dead ends: 580 [2023-12-02 14:40:49,445 INFO L226 Difference]: Without dead ends: 419 [2023-12-02 14:40:49,446 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 [2023-12-02 14:40:49,448 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 35 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 164 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 [2023-12-02 14:40:49,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 164 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:40:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-12-02 14:40:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 352. [2023-12-02 14:40:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 257 states have (on average 1.245136186770428) internal successors, (320), 260 states have internal predecessors, (320), 59 states have call successors, (59), 35 states have call predecessors, (59), 35 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-02 14:40:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 438 transitions. [2023-12-02 14:40:49,492 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 438 transitions. Word has length 49 [2023-12-02 14:40:49,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:40:49,492 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 438 transitions. [2023-12-02 14:40:49,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 14:40:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 438 transitions. [2023-12-02 14:40:49,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 14:40:49,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:40:49,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2023-12-02 14:40:49,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:40:49,497 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:40:49,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:40:49,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1120584992, now seen corresponding path program 1 times [2023-12-02 14:40:49,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:40:49,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174325499] [2023-12-02 14:40:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:40:49,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:40:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:40:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-02 14:40:49,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:40:49,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174325499] [2023-12-02 14:40:49,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174325499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:40:49,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:40:49,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:40:49,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70464288] [2023-12-02 14:40:49,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:40:49,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:40:49,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:40:49,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:40:49,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:40:49,561 INFO L87 Difference]: Start difference. First operand 352 states and 438 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 14:40:49,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:40:49,734 INFO L93 Difference]: Finished difference Result 549 states and 694 transitions. [2023-12-02 14:40:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:40:49,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2023-12-02 14:40:49,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:40:49,740 INFO L225 Difference]: With dead ends: 549 [2023-12-02 14:40:49,741 INFO L226 Difference]: Without dead ends: 352 [2023-12-02 14:40:49,741 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 [2023-12-02 14:40:49,743 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 131 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:40:49,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 186 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:40:49,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-02 14:40:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 348. [2023-12-02 14:40:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 253 states have (on average 1.209486166007905) internal successors, (306), 256 states have internal predecessors, (306), 59 states have call successors, (59), 35 states have call predecessors, (59), 35 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-02 14:40:49,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 424 transitions. [2023-12-02 14:40:49,784 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 424 transitions. Word has length 63 [2023-12-02 14:40:49,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:40:49,785 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 424 transitions. [2023-12-02 14:40:49,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 14:40:49,785 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 424 transitions. [2023-12-02 14:40:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 14:40:49,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:40:49,788 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, 1] [2023-12-02 14:40:49,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 14:40:49,789 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:40:49,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:40:49,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1895057569, now seen corresponding path program 1 times [2023-12-02 14:40:49,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:40:49,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672352601] [2023-12-02 14:40:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:40:49,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:40:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:40:49,806 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 14:40:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:40:49,850 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 14:40:49,851 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 14:40:49,852 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 14:40:49,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 14:40:49,857 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-02 14:40:49,861 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 14:40:49,896 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated [2023-12-02 14:40:49,898 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated [2023-12-02 14:40:49,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:40:49 BoogieIcfgContainer [2023-12-02 14:40:49,919 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 14:40:49,919 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 14:40:49,919 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 14:40:49,920 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 14:40:49,920 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:40:47" (3/4) ... [2023-12-02 14:40:49,921 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 14:40:49,933 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated [2023-12-02 14:40:49,935 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated [2023-12-02 14:40:49,994 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 14:40:49,994 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 14:40:49,995 INFO L158 Benchmark]: Toolchain (without parser) took 2960.16ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 118.2MB in the beginning and 124.1MB in the end (delta: -5.9MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2023-12-02 14:40:49,995 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:40:49,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.19ms. Allocated memory is still 153.1MB. Free memory was 117.6MB in the beginning and 104.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 14:40:49,996 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.72ms. Allocated memory is still 153.1MB. Free memory was 104.9MB in the beginning and 102.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:40:49,996 INFO L158 Benchmark]: Boogie Preprocessor took 29.23ms. Allocated memory is still 153.1MB. Free memory was 102.9MB in the beginning and 101.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:40:49,997 INFO L158 Benchmark]: RCFGBuilder took 473.01ms. Allocated memory is still 153.1MB. Free memory was 101.4MB in the beginning and 75.1MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 14:40:49,997 INFO L158 Benchmark]: TraceAbstraction took 2096.97ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 74.1MB in the beginning and 129.3MB in the end (delta: -55.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:40:49,998 INFO L158 Benchmark]: Witness Printer took 75.03ms. Allocated memory is still 195.0MB. Free memory was 129.3MB in the beginning and 124.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 14:40:50,000 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.19ms. Allocated memory is still 153.1MB. Free memory was 117.6MB in the beginning and 104.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.72ms. Allocated memory is still 153.1MB. Free memory was 104.9MB in the beginning and 102.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.23ms. Allocated memory is still 153.1MB. Free memory was 102.9MB in the beginning and 101.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 473.01ms. Allocated memory is still 153.1MB. Free memory was 101.4MB in the beginning and 75.1MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2096.97ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 74.1MB in the beginning and 129.3MB in the end (delta: -55.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 75.03ms. Allocated memory is still 195.0MB. Free memory was 129.3MB in the beginning and 124.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int m_pc = 0; [L26] int t1_pc = 0; [L27] int m_st ; [L28] int t1_st ; [L29] int m_i ; [L30] int t1_i ; [L31] int M_E = 2; [L32] int T1_E = 2; [L33] int E_1 = 2; [L449] int __retres1 ; [L453] CALL init_model() [L364] m_i = 1 [L365] t1_i = 1 [L453] RET init_model() [L454] CALL start_simulation() [L390] int kernel_st ; [L391] int tmp ; [L392] int tmp___0 ; [L396] kernel_st = 0 VAL [E_1=2, M_E=2, T1_E=2, kernel_st=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L397] FCALL update_channels() VAL [E_1=2, M_E=2, T1_E=2, kernel_st=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L398] CALL init_threads() [L161] COND TRUE m_i == 1 [L162] m_st = 0 [L166] COND TRUE t1_i == 1 [L167] t1_st = 0 [L398] RET init_threads() [L399] CALL fire_delta_events() VAL [E_1=2, M_E=2, T1_E=2, \old(E_1)=2, \old(M_E)=2, \old(T1_E)=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L250] COND FALSE !(M_E == 0) [L255] COND FALSE !(T1_E == 0) [L260] COND FALSE !(E_1 == 0) [L399] RET fire_delta_events() VAL [E_1=2, M_E=2, T1_E=2, kernel_st=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L400] CALL activate_threads() VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L293] int tmp ; [L294] int tmp___0 ; [L298] CALL, EXPR is_master_triggered() [L112] int __retres1 ; VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L115] COND FALSE !(m_pc == 1) VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L125] __retres1 = 0 VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, __retres1=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L127] return (__retres1); [L298] RET, EXPR is_master_triggered() [L298] tmp = is_master_triggered() [L300] COND FALSE !(\read(tmp)) [L306] CALL, EXPR is_transmit1_triggered() [L131] int __retres1 ; VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L134] COND FALSE !(t1_pc == 1) VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L144] __retres1 = 0 VAL [E_1=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, __retres1=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L146] return (__retres1); [L306] RET, EXPR is_transmit1_triggered() [L306] tmp___0 = is_transmit1_triggered() [L308] COND FALSE !(\read(tmp___0)) [L400] RET activate_threads() VAL [E_1=2, M_E=2, T1_E=2, kernel_st=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L401] CALL reset_delta_events() VAL [E_1=2, M_E=2, T1_E=2, \old(E_1)=2, \old(M_E)=2, \old(T1_E)=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L273] COND FALSE !(M_E == 1) [L278] COND FALSE !(T1_E == 1) [L283] COND FALSE !(E_1 == 1) [L401] RET reset_delta_events() VAL [E_1=2, M_E=2, T1_E=2, kernel_st=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L404] COND TRUE 1 [L407] kernel_st = 1 [L408] CALL eval() [L197] int tmp ; VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L201] COND TRUE 1 VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L204] CALL, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L176] int __retres1 ; [L179] COND TRUE m_st == 0 [L180] __retres1 = 1 [L192] return (__retres1); [L204] RET, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0] [L204] tmp = exists_runnable_thread() [L206] COND TRUE \read(tmp) VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=1] [L211] COND TRUE m_st == 0 [L212] int tmp_ndt_1; [L213] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L214] COND FALSE, EXPR !(\read(tmp_ndt_1)) VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=1, tmp_ndt_1=0] [L211-L222] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=1] [L225] COND TRUE t1_st == 0 [L226] int tmp_ndt_2; [L227] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L228] COND TRUE, EXPR \read(tmp_ndt_2) [L230] EXPR t1_st = 1 [L231] CALL, EXPR transmit1() [L82] COND TRUE t1_pc == 0 VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=1] [L93] COND TRUE 1 [L95] t1_pc = 1 [L96] t1_st = 2 [L231] RET, EXPR transmit1() [L225-L236] { int tmp_ndt_2; tmp_ndt_2 = __VERIFIER_nondet_int(); if (tmp_ndt_2) { { t1_st = 1; transmit1(); } } else { } } VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1] [L201] COND TRUE 1 VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1] [L204] CALL, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2] [L176] int __retres1 ; [L179] COND TRUE m_st == 0 [L180] __retres1 = 1 [L192] return (__retres1); [L204] RET, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1] [L204] tmp = exists_runnable_thread() [L206] COND TRUE \read(tmp) VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1] [L211] COND TRUE m_st == 0 [L212] int tmp_ndt_1; [L213] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L214] COND TRUE, EXPR \read(tmp_ndt_1) [L216] EXPR m_st = 1 [L217] CALL, EXPR master() [L41] COND TRUE m_pc == 0 VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L52] COND TRUE 1 [L55] E_1 = 1 [L56] CALL immediate_notify() [L322] CALL activate_threads() VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L293] int tmp ; [L294] int tmp___0 ; [L298] CALL, EXPR is_master_triggered() [L112] int __retres1 ; VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L115] COND FALSE !(m_pc == 1) VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L125] __retres1 = 0 VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, __retres1=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L127] return (__retres1); [L298] RET, EXPR is_master_triggered() [L298] tmp = is_master_triggered() [L300] COND FALSE !(\read(tmp)) [L306] CALL, EXPR is_transmit1_triggered() [L131] int __retres1 ; VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L134] COND TRUE t1_pc == 1 VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L135] COND TRUE E_1 == 1 [L136] __retres1 = 1 VAL [E_1=1, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, __retres1=1, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2] [L146] return (__retres1); [L306] RET, EXPR is_transmit1_triggered() [L306] tmp___0 = is_transmit1_triggered() [L308] COND TRUE \read(tmp___0) [L309] t1_st = 0 [L322] RET activate_threads() VAL [E_1=1, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0] [L56] RET immediate_notify() [L57] E_1 = 2 VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0] [L60] COND TRUE 1 [L62] m_pc = 1 [L63] m_st = 2 VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0] [L217] RET, EXPR master() [L211-L222] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, tmp=1] [L225] COND TRUE t1_st == 0 [L226] int tmp_ndt_2; [L227] tmp_ndt_2 = __VERIFIER_nondet_int() [L228] COND TRUE \read(tmp_ndt_2) [L230] t1_st = 1 [L231] CALL transmit1() [L82] COND FALSE !(t1_pc == 0) VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1] [L85] COND TRUE t1_pc == 1 [L101] CALL error() [L21] reach_error() VAL [E_1=2, M_E=2, T1_E=2, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 546 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 539 mSDsluCounter, 856 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 382 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 439 IncrementalHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 474 mSDtfsCounter, 439 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=352occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 87 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 349 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 32/32 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-02 14:40:50,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7408cfda-69c3-416d-9be8-e4d9b6dc098e/bin/utaipan-verify-nQ1chXbOIh/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE