./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.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_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/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_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/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_898048c3-2819-4181-b54d-5b9074391823/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 546425dfb0e9d0673715f309b3c99445cd7a29ebb128e47cf94e5f13217a2c6c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:22:05,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:22:05,239 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:22:05,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:22:05,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:22:05,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:22:05,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:22:05,269 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:22:05,270 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:22:05,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:22:05,271 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:22:05,271 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:22:05,272 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:22:05,272 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:22:05,273 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:22:05,273 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:22:05,274 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:22:05,274 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:22:05,275 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:22:05,275 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:22:05,276 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:22:05,276 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:22:05,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:22:05,277 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:22:05,278 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:22:05,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:22:05,278 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:22:05,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:22:05,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:22:05,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:22:05,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:22:05,280 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:22:05,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:22:05,281 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:22:05,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:22:05,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:22:05,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:22:05,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:22:05,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:22:05,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:22:05,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:22:05,282 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:22:05,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:22:05,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:22:05,283 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:22:05,283 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:22:05,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:22:05,283 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_898048c3-2819-4181-b54d-5b9074391823/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 546425dfb0e9d0673715f309b3c99445cd7a29ebb128e47cf94e5f13217a2c6c [2023-12-02 13:22:05,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:22:05,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:22:05,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:22:05,543 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:22:05,544 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:22:05,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c [2023-12-02 13:22:08,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:22:08,823 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:22:08,823 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c [2023-12-02 13:22:08,872 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/data/5cdd5b4af/d4034dac321a44c7b66ccac08c5127f5/FLAGdbd0557e9 [2023-12-02 13:22:08,886 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/data/5cdd5b4af/d4034dac321a44c7b66ccac08c5127f5 [2023-12-02 13:22:08,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:22:08,890 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:22:08,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:22:08,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:22:08,896 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:22:08,897 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:22:08" (1/1) ... [2023-12-02 13:22:08,898 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5687baac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:08, skipping insertion in model container [2023-12-02 13:22:08,898 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:22:08" (1/1) ... [2023-12-02 13:22:09,079 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:22:10,882 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_898048c3-2819-4181-b54d-5b9074391823/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c[380323,380336] [2023-12-02 13:22:10,910 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_898048c3-2819-4181-b54d-5b9074391823/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c[383339,383352] [2023-12-02 13:22:11,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:22:11,104 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:22:11,940 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_898048c3-2819-4181-b54d-5b9074391823/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c[380323,380336] [2023-12-02 13:22:11,945 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_898048c3-2819-4181-b54d-5b9074391823/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c[383339,383352] [2023-12-02 13:22:11,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:22:12,036 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:22:12,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:12 WrapperNode [2023-12-02 13:22:12,037 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:22:12,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:22:12,038 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:22:12,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:22:12,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:12" (1/1) ... [2023-12-02 13:22:12,145 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:12" (1/1) ... [2023-12-02 13:22:12,450 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12754 [2023-12-02 13:22:12,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:22:12,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:22:12,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:22:12,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:22:12,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:12" (1/1) ... [2023-12-02 13:22:12,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:12" (1/1) ... [2023-12-02 13:22:12,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:12" (1/1) ... [2023-12-02 13:22:12,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:12" (1/1) ... [2023-12-02 13:22:12,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:12" (1/1) ... [2023-12-02 13:22:12,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:12" (1/1) ... [2023-12-02 13:22:12,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:12" (1/1) ... [2023-12-02 13:22:12,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:12" (1/1) ... [2023-12-02 13:22:13,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:22:13,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:22:13,069 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:22:13,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:22:13,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:12" (1/1) ... [2023-12-02 13:22:13,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:22:13,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:13,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:22:13,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:22:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:22:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-02 13:22:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-02 13:22:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-02 13:22:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-02 13:22:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-02 13:22:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-02 13:22:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-02 13:22:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-02 13:22:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-02 13:22:13,186 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-02 13:22:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-02 13:22:13,186 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-02 13:22:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-02 13:22:13,187 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-02 13:22:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:22:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:22:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:22:13,316 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:22:13,318 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:22:20,678 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:22:22,426 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:22:22,427 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-02 13:22:22,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:22:22 BoogieIcfgContainer [2023-12-02 13:22:22,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:22:22,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:22:22,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:22:22,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:22:22,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:22:08" (1/3) ... [2023-12-02 13:22:22,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2145813c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:22:22, skipping insertion in model container [2023-12-02 13:22:22,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:12" (2/3) ... [2023-12-02 13:22:22,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2145813c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:22:22, skipping insertion in model container [2023-12-02 13:22:22,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:22:22" (3/3) ... [2023-12-02 13:22:22,437 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.04.cil-2.c [2023-12-02 13:22:22,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:22:22,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 13:22:22,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:22:22,528 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;@d53c46a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:22:22,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 13:22:22,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 1754 states, 1724 states have (on average 1.9698375870069607) internal successors, (3396), 1729 states have internal predecessors, (3396), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:22:22,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 13:22:22,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:22,552 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] [2023-12-02 13:22:22,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:22,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:22,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1373567122, now seen corresponding path program 1 times [2023-12-02 13:22:22,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:22,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248225300] [2023-12-02 13:22:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:22,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:22,903 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 13:22:22,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248225300] [2023-12-02 13:22:22,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248225300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:22,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:22:22,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:22:22,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992725273] [2023-12-02 13:22:22,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:22,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:22:22,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:22,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:22:22,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:22:22,947 INFO L87 Difference]: Start difference. First operand has 1754 states, 1724 states have (on average 1.9698375870069607) internal successors, (3396), 1729 states have internal predecessors, (3396), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 13:22:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:23,772 INFO L93 Difference]: Finished difference Result 3595 states and 7014 transitions. [2023-12-02 13:22:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:22:23,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2023-12-02 13:22:23,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:23,801 INFO L225 Difference]: With dead ends: 3595 [2023-12-02 13:22:23,801 INFO L226 Difference]: Without dead ends: 1840 [2023-12-02 13:22:23,809 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 13:22:23,813 INFO L413 NwaCegarLoop]: 3288 mSDtfsCounter, 3533 mSDsluCounter, 3220 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 6508 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:23,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 6508 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:22:23,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2023-12-02 13:22:23,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1839. [2023-12-02 13:22:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1791 states have (on average 1.9430485762144054) internal successors, (3480), 1795 states have internal predecessors, (3480), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-02 13:22:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 3546 transitions. [2023-12-02 13:22:23,943 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 3546 transitions. Word has length 44 [2023-12-02 13:22:23,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:23,944 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 3546 transitions. [2023-12-02 13:22:23,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 13:22:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 3546 transitions. [2023-12-02 13:22:23,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 13:22:23,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:23,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-12-02 13:22:23,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:22:23,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:23,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash -289738885, now seen corresponding path program 1 times [2023-12-02 13:22:23,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:23,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688803019] [2023-12-02 13:22:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:23,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:22:24,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:24,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688803019] [2023-12-02 13:22:24,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688803019] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:22:24,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323639750] [2023-12-02 13:22:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:24,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:24,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:24,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:22:24,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:22:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:24,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:22:24,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:22:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 13:22:24,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:22:24,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323639750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:24,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:22:24,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-02 13:22:24,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064934983] [2023-12-02 13:22:24,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:24,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:22:24,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:22:24,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:22:24,344 INFO L87 Difference]: Start difference. First operand 1839 states and 3546 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 13:22:24,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:24,775 INFO L93 Difference]: Finished difference Result 2218 states and 4089 transitions. [2023-12-02 13:22:24,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:22:24,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2023-12-02 13:22:24,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:24,789 INFO L225 Difference]: With dead ends: 2218 [2023-12-02 13:22:24,789 INFO L226 Difference]: Without dead ends: 2025 [2023-12-02 13:22:24,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:22:24,792 INFO L413 NwaCegarLoop]: 3225 mSDtfsCounter, 3394 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3394 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:24,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3394 Valid, 3342 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:22:24,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2023-12-02 13:22:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2019. [2023-12-02 13:22:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 1933 states have (on average 1.9022245214692188) internal successors, (3677), 1938 states have internal predecessors, (3677), 60 states have call successors, (60), 25 states have call predecessors, (60), 24 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-02 13:22:24,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3795 transitions. [2023-12-02 13:22:24,853 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3795 transitions. Word has length 82 [2023-12-02 13:22:24,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:24,853 INFO L495 AbstractCegarLoop]: Abstraction has 2019 states and 3795 transitions. [2023-12-02 13:22:24,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 13:22:24,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3795 transitions. [2023-12-02 13:22:24,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 13:22:24,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:24,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-12-02 13:22:24,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:22:25,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 13:22:25,060 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:25,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:25,060 INFO L85 PathProgramCache]: Analyzing trace with hash 558312347, now seen corresponding path program 1 times [2023-12-02 13:22:25,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:25,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210527366] [2023-12-02 13:22:25,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:25,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:22:25,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:25,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210527366] [2023-12-02 13:22:25,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210527366] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:22:25,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225122870] [2023-12-02 13:22:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:25,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:25,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:25,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:22:25,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:22:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:25,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:22:25,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:22:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:22:25,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:22:25,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225122870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:25,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:22:25,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-02 13:22:25,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380077824] [2023-12-02 13:22:25,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:25,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:22:25,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:25,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:22:25,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:22:25,390 INFO L87 Difference]: Start difference. First operand 2019 states and 3795 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 13:22:25,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:25,824 INFO L93 Difference]: Finished difference Result 2752 states and 4838 transitions. [2023-12-02 13:22:25,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:22:25,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2023-12-02 13:22:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:25,837 INFO L225 Difference]: With dead ends: 2752 [2023-12-02 13:22:25,837 INFO L226 Difference]: Without dead ends: 2379 [2023-12-02 13:22:25,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:22:25,841 INFO L413 NwaCegarLoop]: 3223 mSDtfsCounter, 3397 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3397 SdHoareTripleChecker+Valid, 3340 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:25,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3397 Valid, 3340 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:22:25,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2023-12-02 13:22:25,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 2371. [2023-12-02 13:22:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2211 states have (on average 1.835820895522388) internal successors, (4059), 2218 states have internal predecessors, (4059), 110 states have call successors, (110), 49 states have call predecessors, (110), 48 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-02 13:22:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 4277 transitions. [2023-12-02 13:22:25,913 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 4277 transitions. Word has length 82 [2023-12-02 13:22:25,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:25,913 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 4277 transitions. [2023-12-02 13:22:25,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 13:22:25,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 4277 transitions. [2023-12-02 13:22:25,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 13:22:25,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:25,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-12-02 13:22:25,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:22:26,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:26,119 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:26,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1854929787, now seen corresponding path program 1 times [2023-12-02 13:22:26,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:26,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623451980] [2023-12-02 13:22:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:26,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 13:22:26,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:26,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623451980] [2023-12-02 13:22:26,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623451980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:26,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:22:26,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:22:26,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190196657] [2023-12-02 13:22:26,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:26,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:22:26,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:26,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:22:26,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:22:26,230 INFO L87 Difference]: Start difference. First operand 2371 states and 4277 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 13:22:26,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:26,804 INFO L93 Difference]: Finished difference Result 2947 states and 5092 transitions. [2023-12-02 13:22:26,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:22:26,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2023-12-02 13:22:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:26,821 INFO L225 Difference]: With dead ends: 2947 [2023-12-02 13:22:26,821 INFO L226 Difference]: Without dead ends: 2567 [2023-12-02 13:22:26,823 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 13:22:26,824 INFO L413 NwaCegarLoop]: 3245 mSDtfsCounter, 59 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:26,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 6431 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:22:26,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2023-12-02 13:22:26,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2495. [2023-12-02 13:22:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2495 states, 2327 states have (on average 1.821658788139235) internal successors, (4239), 2334 states have internal predecessors, (4239), 114 states have call successors, (114), 53 states have call predecessors, (114), 52 states have return successors, (112), 108 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-02 13:22:26,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 4465 transitions. [2023-12-02 13:22:26,919 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 4465 transitions. Word has length 82 [2023-12-02 13:22:26,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:26,920 INFO L495 AbstractCegarLoop]: Abstraction has 2495 states and 4465 transitions. [2023-12-02 13:22:26,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 13:22:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 4465 transitions. [2023-12-02 13:22:26,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 13:22:26,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:26,924 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-02 13:22:26,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 13:22:26,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:26,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:26,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1982153835, now seen corresponding path program 1 times [2023-12-02 13:22:26,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:26,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612749122] [2023-12-02 13:22:26,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:26,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-02 13:22:27,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:27,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612749122] [2023-12-02 13:22:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612749122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:27,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:22:27,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:22:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520233446] [2023-12-02 13:22:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:27,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:22:27,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:22:27,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:22:27,010 INFO L87 Difference]: Start difference. First operand 2495 states and 4465 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 13:22:27,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:27,446 INFO L93 Difference]: Finished difference Result 4156 states and 6826 transitions. [2023-12-02 13:22:27,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:22:27,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 109 [2023-12-02 13:22:27,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:27,468 INFO L225 Difference]: With dead ends: 4156 [2023-12-02 13:22:27,469 INFO L226 Difference]: Without dead ends: 3307 [2023-12-02 13:22:27,472 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 13:22:27,473 INFO L413 NwaCegarLoop]: 3195 mSDtfsCounter, 3387 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3387 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:27,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3387 Valid, 3312 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:22:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2023-12-02 13:22:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 3291. [2023-12-02 13:22:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 2971 states have (on average 1.7256815886906764) internal successors, (5127), 2982 states have internal predecessors, (5127), 214 states have call successors, (214), 105 states have call predecessors, (214), 104 states have return successors, (212), 204 states have call predecessors, (212), 212 states have call successors, (212) [2023-12-02 13:22:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 5553 transitions. [2023-12-02 13:22:27,607 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 5553 transitions. Word has length 109 [2023-12-02 13:22:27,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:27,608 INFO L495 AbstractCegarLoop]: Abstraction has 3291 states and 5553 transitions. [2023-12-02 13:22:27,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 13:22:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 5553 transitions. [2023-12-02 13:22:27,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 13:22:27,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:27,616 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-02 13:22:27,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 13:22:27,616 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:27,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:27,617 INFO L85 PathProgramCache]: Analyzing trace with hash 551286732, now seen corresponding path program 1 times [2023-12-02 13:22:27,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:27,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454977230] [2023-12-02 13:22:27,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:27,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-02 13:22:27,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:27,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454977230] [2023-12-02 13:22:27,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454977230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:27,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:22:27,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:22:27,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151290550] [2023-12-02 13:22:27,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:27,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:22:27,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:27,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:22:27,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:22:27,700 INFO L87 Difference]: Start difference. First operand 3291 states and 5553 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 13:22:28,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:28,200 INFO L93 Difference]: Finished difference Result 6508 states and 10066 transitions. [2023-12-02 13:22:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:22:28,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 109 [2023-12-02 13:22:28,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:28,229 INFO L225 Difference]: With dead ends: 6508 [2023-12-02 13:22:28,229 INFO L226 Difference]: Without dead ends: 4863 [2023-12-02 13:22:28,236 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 13:22:28,237 INFO L413 NwaCegarLoop]: 3208 mSDtfsCounter, 3390 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:28,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3390 Valid, 3325 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:22:28,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2023-12-02 13:22:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 4835. [2023-12-02 13:22:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4835 states, 4219 states have (on average 1.617207869163309) internal successors, (6823), 4238 states have internal predecessors, (6823), 406 states have call successors, (406), 209 states have call predecessors, (406), 208 states have return successors, (404), 388 states have call predecessors, (404), 404 states have call successors, (404) [2023-12-02 13:22:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 7633 transitions. [2023-12-02 13:22:28,437 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 7633 transitions. Word has length 109 [2023-12-02 13:22:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:28,438 INFO L495 AbstractCegarLoop]: Abstraction has 4835 states and 7633 transitions. [2023-12-02 13:22:28,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 13:22:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 7633 transitions. [2023-12-02 13:22:28,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 13:22:28,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:28,451 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2023-12-02 13:22:28,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 13:22:28,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:28,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash -53787086, now seen corresponding path program 1 times [2023-12-02 13:22:28,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:28,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383316610] [2023-12-02 13:22:28,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:28,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 13:22:28,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:28,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383316610] [2023-12-02 13:22:28,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383316610] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:22:28,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055671627] [2023-12-02 13:22:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:28,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:28,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:28,739 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:22:28,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:22:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:28,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:22:28,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:22:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 13:22:28,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:22:28,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055671627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:28,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:22:28,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 13:22:28,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866122060] [2023-12-02 13:22:28,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:28,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:22:28,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:28,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:22:28,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:22:28,952 INFO L87 Difference]: Start difference. First operand 4835 states and 7633 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:22:29,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:29,567 INFO L93 Difference]: Finished difference Result 6499 states and 10031 transitions. [2023-12-02 13:22:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:22:29,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 124 [2023-12-02 13:22:29,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:29,595 INFO L225 Difference]: With dead ends: 6499 [2023-12-02 13:22:29,596 INFO L226 Difference]: Without dead ends: 4855 [2023-12-02 13:22:29,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:22:29,602 INFO L413 NwaCegarLoop]: 3269 mSDtfsCounter, 120 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6444 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:29,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6444 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:22:29,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4855 states. [2023-12-02 13:22:29,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4855 to 4819. [2023-12-02 13:22:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4819 states, 4203 states have (on average 1.6043302403045443) internal successors, (6743), 4222 states have internal predecessors, (6743), 406 states have call successors, (406), 209 states have call predecessors, (406), 208 states have return successors, (404), 388 states have call predecessors, (404), 404 states have call successors, (404) [2023-12-02 13:22:29,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4819 states to 4819 states and 7553 transitions. [2023-12-02 13:22:29,787 INFO L78 Accepts]: Start accepts. Automaton has 4819 states and 7553 transitions. Word has length 124 [2023-12-02 13:22:29,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:29,787 INFO L495 AbstractCegarLoop]: Abstraction has 4819 states and 7553 transitions. [2023-12-02 13:22:29,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:22:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4819 states and 7553 transitions. [2023-12-02 13:22:29,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 13:22:29,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:29,801 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:22:29,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 13:22:30,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 13:22:30,007 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:30,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:30,007 INFO L85 PathProgramCache]: Analyzing trace with hash -244862732, now seen corresponding path program 1 times [2023-12-02 13:22:30,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:30,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290849310] [2023-12-02 13:22:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:30,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 13:22:30,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:30,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290849310] [2023-12-02 13:22:30,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290849310] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:22:30,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102006625] [2023-12-02 13:22:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:30,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:30,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:30,215 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:22:30,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:22:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:30,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:22:30,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:22:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-02 13:22:30,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:22:30,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102006625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:30,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:22:30,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 13:22:30,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500503680] [2023-12-02 13:22:30,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:30,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:22:30,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:30,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:22:30,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:22:30,433 INFO L87 Difference]: Start difference. First operand 4819 states and 7553 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:22:30,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:30,892 INFO L93 Difference]: Finished difference Result 7153 states and 10638 transitions. [2023-12-02 13:22:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:22:30,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 124 [2023-12-02 13:22:30,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:30,918 INFO L225 Difference]: With dead ends: 7153 [2023-12-02 13:22:30,918 INFO L226 Difference]: Without dead ends: 5533 [2023-12-02 13:22:30,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:22:30,924 INFO L413 NwaCegarLoop]: 3197 mSDtfsCounter, 3399 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3399 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:30,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3399 Valid, 3226 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:22:30,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2023-12-02 13:22:31,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 5533. [2023-12-02 13:22:31,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5533 states, 4825 states have (on average 1.5496373056994819) internal successors, (7477), 4844 states have internal predecessors, (7477), 436 states have call successors, (436), 271 states have call predecessors, (436), 270 states have return successors, (434), 418 states have call predecessors, (434), 434 states have call successors, (434) [2023-12-02 13:22:31,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5533 states to 5533 states and 8347 transitions. [2023-12-02 13:22:31,078 INFO L78 Accepts]: Start accepts. Automaton has 5533 states and 8347 transitions. Word has length 124 [2023-12-02 13:22:31,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:31,078 INFO L495 AbstractCegarLoop]: Abstraction has 5533 states and 8347 transitions. [2023-12-02 13:22:31,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:22:31,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5533 states and 8347 transitions. [2023-12-02 13:22:31,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 13:22:31,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:31,088 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:22:31,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:22:31,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 13:22:31,289 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:31,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:31,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1930451243, now seen corresponding path program 1 times [2023-12-02 13:22:31,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:31,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301387281] [2023-12-02 13:22:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:31,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 13:22:31,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:31,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301387281] [2023-12-02 13:22:31,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301387281] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:22:31,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350880379] [2023-12-02 13:22:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:31,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:31,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:31,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:22:31,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 13:22:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:31,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:22:31,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:22:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 13:22:31,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:22:31,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350880379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:31,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:22:31,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 13:22:31,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375795900] [2023-12-02 13:22:31,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:31,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:22:31,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:31,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:22:31,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:22:31,667 INFO L87 Difference]: Start difference. First operand 5533 states and 8347 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:22:32,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:32,414 INFO L93 Difference]: Finished difference Result 10841 states and 15428 transitions. [2023-12-02 13:22:32,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:22:32,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 124 [2023-12-02 13:22:32,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:32,441 INFO L225 Difference]: With dead ends: 10841 [2023-12-02 13:22:32,441 INFO L226 Difference]: Without dead ends: 6955 [2023-12-02 13:22:32,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:22:32,454 INFO L413 NwaCegarLoop]: 3197 mSDtfsCounter, 70 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 6362 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:32,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 6362 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:22:32,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6955 states. [2023-12-02 13:22:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6955 to 5973. [2023-12-02 13:22:32,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5973 states, 5229 states have (on average 1.5469497035762096) internal successors, (8089), 5249 states have internal predecessors, (8089), 454 states have call successors, (454), 289 states have call predecessors, (454), 288 states have return successors, (452), 435 states have call predecessors, (452), 452 states have call successors, (452) [2023-12-02 13:22:32,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5973 states to 5973 states and 8995 transitions. [2023-12-02 13:22:32,798 INFO L78 Accepts]: Start accepts. Automaton has 5973 states and 8995 transitions. Word has length 124 [2023-12-02 13:22:32,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:32,798 INFO L495 AbstractCegarLoop]: Abstraction has 5973 states and 8995 transitions. [2023-12-02 13:22:32,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:22:32,798 INFO L276 IsEmpty]: Start isEmpty. Operand 5973 states and 8995 transitions. [2023-12-02 13:22:32,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 13:22:32,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:32,815 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:22:32,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 13:22:33,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 13:22:33,016 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:33,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:33,017 INFO L85 PathProgramCache]: Analyzing trace with hash 282166588, now seen corresponding path program 2 times [2023-12-02 13:22:33,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:33,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852057090] [2023-12-02 13:22:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:33,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:22:33,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:33,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852057090] [2023-12-02 13:22:33,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852057090] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:22:33,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730325912] [2023-12-02 13:22:33,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:22:33,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:33,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:33,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:22:33,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 13:22:33,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 13:22:33,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:22:33,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:22:33,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:22:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 13:22:33,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:22:33,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730325912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:33,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:22:33,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 13:22:33,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119387491] [2023-12-02 13:22:33,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:33,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:22:33,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:33,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:22:33,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:22:33,354 INFO L87 Difference]: Start difference. First operand 5973 states and 8995 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:22:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:34,011 INFO L93 Difference]: Finished difference Result 9659 states and 14005 transitions. [2023-12-02 13:22:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:22:34,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 124 [2023-12-02 13:22:34,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:34,035 INFO L225 Difference]: With dead ends: 9659 [2023-12-02 13:22:34,035 INFO L226 Difference]: Without dead ends: 7447 [2023-12-02 13:22:34,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:22:34,043 INFO L413 NwaCegarLoop]: 3263 mSDtfsCounter, 79 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 6449 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:34,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 6449 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:22:34,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7447 states. [2023-12-02 13:22:34,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7447 to 6757. [2023-12-02 13:22:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6757 states, 5949 states have (on average 1.5372331484283073) internal successors, (9145), 5969 states have internal predecessors, (9145), 486 states have call successors, (486), 321 states have call predecessors, (486), 320 states have return successors, (484), 467 states have call predecessors, (484), 484 states have call successors, (484) [2023-12-02 13:22:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6757 states to 6757 states and 10115 transitions. [2023-12-02 13:22:34,328 INFO L78 Accepts]: Start accepts. Automaton has 6757 states and 10115 transitions. Word has length 124 [2023-12-02 13:22:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:34,328 INFO L495 AbstractCegarLoop]: Abstraction has 6757 states and 10115 transitions. [2023-12-02 13:22:34,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:22:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6757 states and 10115 transitions. [2023-12-02 13:22:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 13:22:34,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:34,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2023-12-02 13:22:34,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 13:22:34,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:34,544 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:34,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:34,544 INFO L85 PathProgramCache]: Analyzing trace with hash 975858358, now seen corresponding path program 1 times [2023-12-02 13:22:34,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:34,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489039338] [2023-12-02 13:22:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:34,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-02 13:22:34,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:34,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489039338] [2023-12-02 13:22:34,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489039338] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:22:34,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559722042] [2023-12-02 13:22:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:34,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:34,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:34,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:22:34,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 13:22:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:34,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:22:34,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:22:34,829 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 13:22:34,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:22:34,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559722042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:34,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:22:34,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 13:22:34,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879928377] [2023-12-02 13:22:34,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:34,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:22:34,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:34,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:22:34,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:22:34,831 INFO L87 Difference]: Start difference. First operand 6757 states and 10115 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:22:35,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:35,411 INFO L93 Difference]: Finished difference Result 11451 states and 16549 transitions. [2023-12-02 13:22:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:22:35,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 124 [2023-12-02 13:22:35,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:35,440 INFO L225 Difference]: With dead ends: 11451 [2023-12-02 13:22:35,441 INFO L226 Difference]: Without dead ends: 8815 [2023-12-02 13:22:35,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:22:35,448 INFO L413 NwaCegarLoop]: 3274 mSDtfsCounter, 91 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 6461 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:35,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 6461 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:22:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8815 states. [2023-12-02 13:22:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8815 to 7901. [2023-12-02 13:22:35,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7901 states, 6997 states have (on average 1.5242246677147349) internal successors, (10665), 7017 states have internal predecessors, (10665), 534 states have call successors, (534), 369 states have call predecessors, (534), 368 states have return successors, (532), 515 states have call predecessors, (532), 532 states have call successors, (532) [2023-12-02 13:22:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7901 states to 7901 states and 11731 transitions. [2023-12-02 13:22:35,765 INFO L78 Accepts]: Start accepts. Automaton has 7901 states and 11731 transitions. Word has length 124 [2023-12-02 13:22:35,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:35,765 INFO L495 AbstractCegarLoop]: Abstraction has 7901 states and 11731 transitions. [2023-12-02 13:22:35,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:22:35,765 INFO L276 IsEmpty]: Start isEmpty. Operand 7901 states and 11731 transitions. [2023-12-02 13:22:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 13:22:35,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:35,779 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:22:35,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 13:22:35,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 13:22:35,980 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:35,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:35,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2072766772, now seen corresponding path program 1 times [2023-12-02 13:22:35,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:35,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796995133] [2023-12-02 13:22:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:35,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:22:36,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:36,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796995133] [2023-12-02 13:22:36,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796995133] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:22:36,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080016769] [2023-12-02 13:22:36,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:36,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:36,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:36,068 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:22:36,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 13:22:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:36,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:22:36,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:22:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 13:22:36,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:22:36,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080016769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:36,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:22:36,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 13:22:36,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053606839] [2023-12-02 13:22:36,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:36,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:22:36,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:36,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:22:36,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:22:36,250 INFO L87 Difference]: Start difference. First operand 7901 states and 11731 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:22:36,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:36,851 INFO L93 Difference]: Finished difference Result 13507 states and 19421 transitions. [2023-12-02 13:22:36,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:22:36,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 124 [2023-12-02 13:22:36,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:36,877 INFO L225 Difference]: With dead ends: 13507 [2023-12-02 13:22:36,877 INFO L226 Difference]: Without dead ends: 10311 [2023-12-02 13:22:36,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:22:36,887 INFO L413 NwaCegarLoop]: 3269 mSDtfsCounter, 85 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 6456 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:36,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 6456 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:22:36,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10311 states. [2023-12-02 13:22:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10311 to 9509. [2023-12-02 13:22:37,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9509 states, 8461 states have (on average 1.5044321002245598) internal successors, (12729), 8481 states have internal predecessors, (12729), 606 states have call successors, (606), 441 states have call predecessors, (606), 440 states have return successors, (604), 587 states have call predecessors, (604), 604 states have call successors, (604) [2023-12-02 13:22:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 13939 transitions. [2023-12-02 13:22:37,251 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 13939 transitions. Word has length 124 [2023-12-02 13:22:37,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:37,251 INFO L495 AbstractCegarLoop]: Abstraction has 9509 states and 13939 transitions. [2023-12-02 13:22:37,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:22:37,252 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 13939 transitions. [2023-12-02 13:22:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 13:22:37,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:37,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2023-12-02 13:22:37,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-02 13:22:37,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 13:22:37,475 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:37,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:37,475 INFO L85 PathProgramCache]: Analyzing trace with hash -971924606, now seen corresponding path program 1 times [2023-12-02 13:22:37,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:37,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765308412] [2023-12-02 13:22:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:37,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-02 13:22:37,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:37,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765308412] [2023-12-02 13:22:37,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765308412] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:22:37,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873129730] [2023-12-02 13:22:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:37,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:37,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:37,551 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:22:37,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 13:22:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:37,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:22:37,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:22:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 13:22:37,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:22:37,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873129730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:37,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:22:37,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 13:22:37,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137028872] [2023-12-02 13:22:37,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:37,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:22:37,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:37,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:22:37,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:22:37,740 INFO L87 Difference]: Start difference. First operand 9509 states and 13939 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:22:38,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:38,415 INFO L93 Difference]: Finished difference Result 16407 states and 23445 transitions. [2023-12-02 13:22:38,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:22:38,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 125 [2023-12-02 13:22:38,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:38,449 INFO L225 Difference]: With dead ends: 16407 [2023-12-02 13:22:38,449 INFO L226 Difference]: Without dead ends: 12519 [2023-12-02 13:22:38,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:22:38,459 INFO L413 NwaCegarLoop]: 3247 mSDtfsCounter, 73 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 6434 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:38,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 6434 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:22:38,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12519 states. [2023-12-02 13:22:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12519 to 11957. [2023-12-02 13:22:38,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11957 states, 10693 states have (on average 1.4866735247358085) internal successors, (15897), 10713 states have internal predecessors, (15897), 714 states have call successors, (714), 549 states have call predecessors, (714), 548 states have return successors, (712), 695 states have call predecessors, (712), 712 states have call successors, (712) [2023-12-02 13:22:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11957 states to 11957 states and 17323 transitions. [2023-12-02 13:22:38,860 INFO L78 Accepts]: Start accepts. Automaton has 11957 states and 17323 transitions. Word has length 125 [2023-12-02 13:22:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:38,860 INFO L495 AbstractCegarLoop]: Abstraction has 11957 states and 17323 transitions. [2023-12-02 13:22:38,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:22:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 11957 states and 17323 transitions. [2023-12-02 13:22:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-02 13:22:38,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:38,874 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 13:22:38,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 13:22:39,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:39,074 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:39,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:39,075 INFO L85 PathProgramCache]: Analyzing trace with hash -641149970, now seen corresponding path program 1 times [2023-12-02 13:22:39,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:39,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480941419] [2023-12-02 13:22:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:39,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 13:22:39,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:39,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480941419] [2023-12-02 13:22:39,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480941419] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:22:39,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966031536] [2023-12-02 13:22:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:39,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:39,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:39,364 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:22:39,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 13:22:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:39,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 13:22:39,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:22:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 13:22:39,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:22:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-02 13:22:40,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966031536] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:22:40,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [351181732] [2023-12-02 13:22:40,056 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2023-12-02 13:22:40,056 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:22:40,059 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:22:40,064 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:22:40,064 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:22:57,766 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 77 for LOIs [2023-12-02 13:22:57,776 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 141 for LOIs [2023-12-02 13:22:57,852 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 174 for LOIs [2023-12-02 13:22:58,143 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 13:22:58,144 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 13:22:58,153 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 114 for LOIs [2023-12-02 13:22:58,930 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 1 for LOIs [2023-12-02 13:22:59,014 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:23:08,568 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '199800#(and (= ~a15~0 1) (= 5 ~a20~0) (<= 1 |#StackHeapBarrier|) (= ~t1_pc~0 0) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ ~local~0 4))) (exists ((|v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_5| Int)) (and (<= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_5| 2147483647) (not (= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_5| 0)) (<= 0 (+ |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_5| 2147483648)))) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= ~a27~0 1) (= 0 ~t4_pc~0) (= ~t3_i~0 1) (= ~t4_i~0 1) (= ~a2~0 10))' at error location [2023-12-02 13:23:08,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:23:08,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:23:08,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 9 [2023-12-02 13:23:08,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702533160] [2023-12-02 13:23:08,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:23:08,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:23:08,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:23:08,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:23:08,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=3711, Unknown=0, NotChecked=0, Total=4032 [2023-12-02 13:23:08,572 INFO L87 Difference]: Start difference. First operand 11957 states and 17323 transitions. Second operand has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (29), 6 states have call predecessors, (29), 7 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2023-12-02 13:23:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:23:10,065 INFO L93 Difference]: Finished difference Result 26101 states and 36541 transitions. [2023-12-02 13:23:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 13:23:10,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (29), 6 states have call predecessors, (29), 7 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) Word has length 129 [2023-12-02 13:23:10,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:23:10,088 INFO L225 Difference]: With dead ends: 26101 [2023-12-02 13:23:10,088 INFO L226 Difference]: Without dead ends: 15791 [2023-12-02 13:23:10,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=384, Invalid=4446, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 13:23:10,111 INFO L413 NwaCegarLoop]: 3201 mSDtfsCounter, 3607 mSDsluCounter, 6519 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3620 SdHoareTripleChecker+Valid, 9720 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:23:10,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3620 Valid, 9720 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 13:23:10,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15791 states. [2023-12-02 13:23:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15791 to 15539. [2023-12-02 13:23:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15539 states, 13767 states have (on average 1.4509333914433065) internal successors, (19975), 13795 states have internal predecessors, (19975), 1004 states have call successors, (1004), 767 states have call predecessors, (1004), 766 states have return successors, (1002), 977 states have call predecessors, (1002), 1002 states have call successors, (1002) [2023-12-02 13:23:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15539 states to 15539 states and 21981 transitions. [2023-12-02 13:23:10,649 INFO L78 Accepts]: Start accepts. Automaton has 15539 states and 21981 transitions. Word has length 129 [2023-12-02 13:23:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:23:10,650 INFO L495 AbstractCegarLoop]: Abstraction has 15539 states and 21981 transitions. [2023-12-02 13:23:10,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (29), 6 states have call predecessors, (29), 7 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2023-12-02 13:23:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 15539 states and 21981 transitions. [2023-12-02 13:23:10,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 13:23:10,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:23:10,667 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 13:23:10,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 13:23:10,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 13:23:10,867 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:23:10,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:23:10,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1893769613, now seen corresponding path program 1 times [2023-12-02 13:23:10,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:23:10,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294925241] [2023-12-02 13:23:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:10,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:23:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 13:23:11,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:23:11,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294925241] [2023-12-02 13:23:11,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294925241] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:23:11,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894455001] [2023-12-02 13:23:11,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:11,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:23:11,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:23:11,243 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:23:11,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 13:23:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:11,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 13:23:11,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:23:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 68 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:23:11,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:23:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 13:23:12,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894455001] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:23:12,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [179065677] [2023-12-02 13:23:12,089 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-12-02 13:23:12,089 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:23:12,090 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:23:12,090 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:23:12,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:23:18,966 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 13:23:18,968 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 142 for LOIs [2023-12-02 13:23:19,094 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 155 for LOIs [2023-12-02 13:23:19,297 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 13:23:19,298 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 13:23:19,310 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 13:23:19,375 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 14 for LOIs [2023-12-02 13:23:19,417 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:23:27,399 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '249822#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 13:23:27,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:23:27,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:23:27,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 16 [2023-12-02 13:23:27,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579945512] [2023-12-02 13:23:27,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:23:27,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 13:23:27,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:23:27,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 13:23:27,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=4586, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 13:23:27,403 INFO L87 Difference]: Start difference. First operand 15539 states and 21981 transitions. Second operand has 16 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) [2023-12-02 13:23:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:23:33,631 INFO L93 Difference]: Finished difference Result 45064 states and 62711 transitions. [2023-12-02 13:23:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-12-02 13:23:33,631 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) Word has length 131 [2023-12-02 13:23:33,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:23:33,701 INFO L225 Difference]: With dead ends: 45064 [2023-12-02 13:23:33,701 INFO L226 Difference]: Without dead ends: 30860 [2023-12-02 13:23:33,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 392 SyntacticMatches, 2 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13897 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=2804, Invalid=31978, Unknown=0, NotChecked=0, Total=34782 [2023-12-02 13:23:33,740 INFO L413 NwaCegarLoop]: 3598 mSDtfsCounter, 11453 mSDsluCounter, 25098 mSDsCounter, 0 mSdLazyCounter, 4048 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11459 SdHoareTripleChecker+Valid, 28696 SdHoareTripleChecker+Invalid, 4466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 4048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:23:33,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11459 Valid, 28696 Invalid, 4466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 4048 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 13:23:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30860 states. [2023-12-02 13:23:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30860 to 21893. [2023-12-02 13:23:34,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21893 states, 19449 states have (on average 1.394570414931359) internal successors, (27123), 19483 states have internal predecessors, (27123), 1304 states have call successors, (1304), 1139 states have call predecessors, (1304), 1138 states have return successors, (1302), 1271 states have call predecessors, (1302), 1302 states have call successors, (1302) [2023-12-02 13:23:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21893 states to 21893 states and 29729 transitions. [2023-12-02 13:23:34,750 INFO L78 Accepts]: Start accepts. Automaton has 21893 states and 29729 transitions. Word has length 131 [2023-12-02 13:23:34,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:23:34,751 INFO L495 AbstractCegarLoop]: Abstraction has 21893 states and 29729 transitions. [2023-12-02 13:23:34,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) [2023-12-02 13:23:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 21893 states and 29729 transitions. [2023-12-02 13:23:34,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 13:23:34,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:23:34,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:23:34,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 13:23:34,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 13:23:34,965 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:23:34,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:23:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash -406691703, now seen corresponding path program 1 times [2023-12-02 13:23:34,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:23:34,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633076444] [2023-12-02 13:23:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:34,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:23:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 13:23:35,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:23:35,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633076444] [2023-12-02 13:23:35,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633076444] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:23:35,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734049318] [2023-12-02 13:23:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:35,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:23:35,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:23:35,161 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:23:35,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 13:23:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:35,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:23:35,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:23:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-02 13:23:35,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:23:35,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734049318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:23:35,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:23:35,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-02 13:23:35,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868584699] [2023-12-02 13:23:35,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:23:35,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:23:35,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:23:35,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:23:35,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:23:35,323 INFO L87 Difference]: Start difference. First operand 21893 states and 29729 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 13:23:36,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:23:36,502 INFO L93 Difference]: Finished difference Result 31133 states and 41875 transitions. [2023-12-02 13:23:36,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:23:36,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 131 [2023-12-02 13:23:36,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:23:36,533 INFO L225 Difference]: With dead ends: 31133 [2023-12-02 13:23:36,533 INFO L226 Difference]: Without dead ends: 22353 [2023-12-02 13:23:36,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-02 13:23:36,542 INFO L413 NwaCegarLoop]: 3238 mSDtfsCounter, 3360 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3360 SdHoareTripleChecker+Valid, 6595 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:23:36,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3360 Valid, 6595 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:23:36,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22353 states. [2023-12-02 13:23:37,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22353 to 22245. [2023-12-02 13:23:37,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22245 states, 19753 states have (on average 1.3925479673973573) internal successors, (27507), 19811 states have internal predecessors, (27507), 1304 states have call successors, (1304), 1139 states have call predecessors, (1304), 1186 states have return successors, (1350), 1295 states have call predecessors, (1350), 1302 states have call successors, (1350) [2023-12-02 13:23:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22245 states to 22245 states and 30161 transitions. [2023-12-02 13:23:37,378 INFO L78 Accepts]: Start accepts. Automaton has 22245 states and 30161 transitions. Word has length 131 [2023-12-02 13:23:37,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:23:37,378 INFO L495 AbstractCegarLoop]: Abstraction has 22245 states and 30161 transitions. [2023-12-02 13:23:37,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 13:23:37,378 INFO L276 IsEmpty]: Start isEmpty. Operand 22245 states and 30161 transitions. [2023-12-02 13:23:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 13:23:37,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:23:37,389 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:23:37,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 13:23:37,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 13:23:37,590 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:23:37,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:23:37,590 INFO L85 PathProgramCache]: Analyzing trace with hash 2036414218, now seen corresponding path program 1 times [2023-12-02 13:23:37,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:23:37,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217225053] [2023-12-02 13:23:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:37,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:23:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 13:23:37,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:23:37,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217225053] [2023-12-02 13:23:37,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217225053] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:23:37,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937629985] [2023-12-02 13:23:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:37,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:23:37,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:23:37,791 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:23:37,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 13:23:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:37,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:23:37,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:23:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 13:23:37,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:23:37,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937629985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:23:37,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:23:37,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 13:23:37,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067773870] [2023-12-02 13:23:37,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:23:37,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:23:37,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:23:37,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:23:37,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:23:37,945 INFO L87 Difference]: Start difference. First operand 22245 states and 30161 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:23:38,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:23:38,985 INFO L93 Difference]: Finished difference Result 31141 states and 41958 transitions. [2023-12-02 13:23:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:23:38,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 132 [2023-12-02 13:23:38,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:23:39,022 INFO L225 Difference]: With dead ends: 31141 [2023-12-02 13:23:39,023 INFO L226 Difference]: Without dead ends: 21809 [2023-12-02 13:23:39,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:23:39,036 INFO L413 NwaCegarLoop]: 3197 mSDtfsCounter, 28 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 6376 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:23:39,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 6376 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:23:39,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21809 states. [2023-12-02 13:23:40,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21809 to 21145. [2023-12-02 13:23:40,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21145 states, 18797 states have (on average 1.3982550406979837) internal successors, (26283), 18819 states have internal predecessors, (26283), 1256 states have call successors, (1256), 1091 states have call predecessors, (1256), 1090 states have return successors, (1254), 1235 states have call predecessors, (1254), 1254 states have call successors, (1254) [2023-12-02 13:23:40,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21145 states to 21145 states and 28793 transitions. [2023-12-02 13:23:40,175 INFO L78 Accepts]: Start accepts. Automaton has 21145 states and 28793 transitions. Word has length 132 [2023-12-02 13:23:40,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:23:40,175 INFO L495 AbstractCegarLoop]: Abstraction has 21145 states and 28793 transitions. [2023-12-02 13:23:40,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:23:40,175 INFO L276 IsEmpty]: Start isEmpty. Operand 21145 states and 28793 transitions. [2023-12-02 13:23:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-02 13:23:40,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:23:40,185 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:23:40,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 13:23:40,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 13:23:40,386 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:23:40,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:23:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1269996379, now seen corresponding path program 1 times [2023-12-02 13:23:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:23:40,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413297921] [2023-12-02 13:23:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:40,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:23:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:40,579 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 23 proven. 31 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 13:23:40,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:23:40,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413297921] [2023-12-02 13:23:40,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413297921] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:23:40,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191937345] [2023-12-02 13:23:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:40,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:23:40,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:23:40,583 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:23:40,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 13:23:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:40,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:23:40,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:23:40,752 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 13:23:40,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:23:40,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191937345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:23:40,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:23:40,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2023-12-02 13:23:40,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987605774] [2023-12-02 13:23:40,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:23:40,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:23:40,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:23:40,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:23:40,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:23:40,754 INFO L87 Difference]: Start difference. First operand 21145 states and 28793 transitions. Second operand has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 13:23:42,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:23:42,443 INFO L93 Difference]: Finished difference Result 46661 states and 62204 transitions. [2023-12-02 13:23:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:23:42,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 133 [2023-12-02 13:23:42,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:23:42,481 INFO L225 Difference]: With dead ends: 46661 [2023-12-02 13:23:42,482 INFO L226 Difference]: Without dead ends: 27210 [2023-12-02 13:23:42,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:23:42,500 INFO L413 NwaCegarLoop]: 3178 mSDtfsCounter, 6962 mSDsluCounter, 6266 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6975 SdHoareTripleChecker+Valid, 9444 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:23:42,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6975 Valid, 9444 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:23:42,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27210 states. [2023-12-02 13:23:43,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27210 to 27206. [2023-12-02 13:23:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27206 states, 24015 states have (on average 1.3670206121174266) internal successors, (32829), 24043 states have internal predecessors, (32829), 1709 states have call successors, (1709), 1481 states have call predecessors, (1709), 1480 states have return successors, (1707), 1682 states have call predecessors, (1707), 1707 states have call successors, (1707) [2023-12-02 13:23:43,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27206 states to 27206 states and 36245 transitions. [2023-12-02 13:23:43,786 INFO L78 Accepts]: Start accepts. Automaton has 27206 states and 36245 transitions. Word has length 133 [2023-12-02 13:23:43,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:23:43,786 INFO L495 AbstractCegarLoop]: Abstraction has 27206 states and 36245 transitions. [2023-12-02 13:23:43,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 13:23:43,786 INFO L276 IsEmpty]: Start isEmpty. Operand 27206 states and 36245 transitions. [2023-12-02 13:23:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 13:23:43,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:23:43,802 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:23:43,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 13:23:44,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 13:23:44,003 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:23:44,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:23:44,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1830164548, now seen corresponding path program 1 times [2023-12-02 13:23:44,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:23:44,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662853549] [2023-12-02 13:23:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:44,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:23:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 33 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 13:23:44,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:23:44,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662853549] [2023-12-02 13:23:44,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662853549] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:23:44,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778813866] [2023-12-02 13:23:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:44,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:23:44,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:23:44,167 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:23:44,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 13:23:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:44,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:23:44,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:23:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 13:23:44,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:23:44,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778813866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:23:44,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:23:44,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 13:23:44,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060897142] [2023-12-02 13:23:44,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:23:44,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:23:44,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:23:44,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:23:44,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:23:44,367 INFO L87 Difference]: Start difference. First operand 27206 states and 36245 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:23:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:23:45,955 INFO L93 Difference]: Finished difference Result 45529 states and 60451 transitions. [2023-12-02 13:23:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:23:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 137 [2023-12-02 13:23:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:23:45,989 INFO L225 Difference]: With dead ends: 45529 [2023-12-02 13:23:45,989 INFO L226 Difference]: Without dead ends: 27234 [2023-12-02 13:23:46,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:23:46,002 INFO L413 NwaCegarLoop]: 3279 mSDtfsCounter, 113 mSDsluCounter, 3173 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 6452 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:23:46,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 6452 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:23:46,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27234 states. [2023-12-02 13:23:47,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27234 to 26798. [2023-12-02 13:23:47,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26798 states, 23607 states have (on average 1.348455966450629) internal successors, (31833), 23635 states have internal predecessors, (31833), 1709 states have call successors, (1709), 1481 states have call predecessors, (1709), 1480 states have return successors, (1707), 1682 states have call predecessors, (1707), 1707 states have call successors, (1707) [2023-12-02 13:23:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26798 states to 26798 states and 35249 transitions. [2023-12-02 13:23:47,201 INFO L78 Accepts]: Start accepts. Automaton has 26798 states and 35249 transitions. Word has length 137 [2023-12-02 13:23:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:23:47,201 INFO L495 AbstractCegarLoop]: Abstraction has 26798 states and 35249 transitions. [2023-12-02 13:23:47,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:23:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 26798 states and 35249 transitions. [2023-12-02 13:23:47,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 13:23:47,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:23:47,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:23:47,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-02 13:23:47,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:23:47,415 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:23:47,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:23:47,415 INFO L85 PathProgramCache]: Analyzing trace with hash -444931898, now seen corresponding path program 1 times [2023-12-02 13:23:47,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:23:47,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632582349] [2023-12-02 13:23:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:47,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:23:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 13:23:47,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:23:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632582349] [2023-12-02 13:23:47,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632582349] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:23:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829930958] [2023-12-02 13:23:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:47,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:23:47,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:23:47,580 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:23:47,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 13:23:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:47,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:23:47,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:23:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 13:23:47,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:23:47,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829930958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:23:47,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:23:47,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2023-12-02 13:23:47,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792072301] [2023-12-02 13:23:47,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:23:47,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:23:47,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:23:47,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:23:47,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:23:47,811 INFO L87 Difference]: Start difference. First operand 26798 states and 35249 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 13:23:50,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:23:50,146 INFO L93 Difference]: Finished difference Result 59598 states and 76843 transitions. [2023-12-02 13:23:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:23:50,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 137 [2023-12-02 13:23:50,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:23:50,187 INFO L225 Difference]: With dead ends: 59598 [2023-12-02 13:23:50,187 INFO L226 Difference]: Without dead ends: 34494 [2023-12-02 13:23:50,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:23:50,201 INFO L413 NwaCegarLoop]: 3173 mSDtfsCounter, 3636 mSDsluCounter, 6331 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3649 SdHoareTripleChecker+Valid, 9504 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:23:50,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3649 Valid, 9504 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:23:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34494 states. [2023-12-02 13:23:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34494 to 34490. [2023-12-02 13:23:51,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34490 states, 30152 states have (on average 1.3152361369063412) internal successors, (39657), 30189 states have internal predecessors, (39657), 2327 states have call successors, (2327), 2010 states have call predecessors, (2327), 2009 states have return successors, (2325), 2291 states have call predecessors, (2325), 2325 states have call successors, (2325) [2023-12-02 13:23:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34490 states to 34490 states and 44309 transitions. [2023-12-02 13:23:51,999 INFO L78 Accepts]: Start accepts. Automaton has 34490 states and 44309 transitions. Word has length 137 [2023-12-02 13:23:52,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:23:52,000 INFO L495 AbstractCegarLoop]: Abstraction has 34490 states and 44309 transitions. [2023-12-02 13:23:52,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 13:23:52,000 INFO L276 IsEmpty]: Start isEmpty. Operand 34490 states and 44309 transitions. [2023-12-02 13:23:52,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 13:23:52,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:23:52,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:23:52,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 13:23:52,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:23:52,217 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:23:52,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:23:52,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1399109008, now seen corresponding path program 1 times [2023-12-02 13:23:52,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:23:52,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992728095] [2023-12-02 13:23:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:52,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:23:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-02 13:23:52,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:23:52,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992728095] [2023-12-02 13:23:52,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992728095] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:23:52,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389544213] [2023-12-02 13:23:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:52,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:23:52,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:23:52,332 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:23:52,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 13:23:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:52,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:23:52,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:23:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 13:23:52,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:23:52,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389544213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:23:52,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:23:52,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-12-02 13:23:52,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571269060] [2023-12-02 13:23:52,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:23:52,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:23:52,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:23:52,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:23:52,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:23:52,542 INFO L87 Difference]: Start difference. First operand 34490 states and 44309 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:23:54,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:23:54,485 INFO L93 Difference]: Finished difference Result 58384 states and 74728 transitions. [2023-12-02 13:23:54,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:23:54,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 141 [2023-12-02 13:23:54,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:23:54,532 INFO L225 Difference]: With dead ends: 58384 [2023-12-02 13:23:54,532 INFO L226 Difference]: Without dead ends: 36366 [2023-12-02 13:23:54,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:23:54,550 INFO L413 NwaCegarLoop]: 3202 mSDtfsCounter, 3363 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3363 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:23:54,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3363 Valid, 3238 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:23:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36366 states. [2023-12-02 13:23:56,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36366 to 36212. [2023-12-02 13:23:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36212 states, 31708 states have (on average 1.3055064967831462) internal successors, (41395), 31745 states have internal predecessors, (41395), 2370 states have call successors, (2370), 2133 states have call predecessors, (2370), 2132 states have return successors, (2468), 2334 states have call predecessors, (2468), 2368 states have call successors, (2468) [2023-12-02 13:23:56,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36212 states to 36212 states and 46233 transitions. [2023-12-02 13:23:56,772 INFO L78 Accepts]: Start accepts. Automaton has 36212 states and 46233 transitions. Word has length 141 [2023-12-02 13:23:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:23:56,772 INFO L495 AbstractCegarLoop]: Abstraction has 36212 states and 46233 transitions. [2023-12-02 13:23:56,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:23:56,772 INFO L276 IsEmpty]: Start isEmpty. Operand 36212 states and 46233 transitions. [2023-12-02 13:23:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 13:23:56,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:23:56,790 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:23:56,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 13:23:56,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:23:56,990 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:23:56,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:23:56,991 INFO L85 PathProgramCache]: Analyzing trace with hash 315824820, now seen corresponding path program 1 times [2023-12-02 13:23:56,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:23:56,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368328000] [2023-12-02 13:23:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:56,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:23:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 51 proven. 20 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 13:23:57,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:23:57,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368328000] [2023-12-02 13:23:57,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368328000] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:23:57,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205969897] [2023-12-02 13:23:57,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:23:57,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:23:57,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:23:57,186 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:23:57,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 13:23:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:23:57,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 13:23:57,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:23:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:23:57,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:23:57,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205969897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:23:57,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:23:57,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2023-12-02 13:23:57,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888859888] [2023-12-02 13:23:57,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:23:57,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:23:57,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:23:57,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:23:57,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:23:57,363 INFO L87 Difference]: Start difference. First operand 36212 states and 46233 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 13:24:00,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:24:00,304 INFO L93 Difference]: Finished difference Result 67257 states and 85415 transitions. [2023-12-02 13:24:00,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:24:00,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 143 [2023-12-02 13:24:00,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:24:00,372 INFO L225 Difference]: With dead ends: 67257 [2023-12-02 13:24:00,372 INFO L226 Difference]: Without dead ends: 43910 [2023-12-02 13:24:00,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:24:00,399 INFO L413 NwaCegarLoop]: 3271 mSDtfsCounter, 242 mSDsluCounter, 9429 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 12700 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:24:00,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 12700 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:24:00,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43910 states. [2023-12-02 13:24:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43910 to 38617. [2023-12-02 13:24:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38617 states, 33664 states have (on average 1.2984790874524714) internal successors, (43712), 33704 states have internal predecessors, (43712), 2644 states have call successors, (2644), 2342 states have call predecessors, (2644), 2307 states have return successors, (2802), 2571 states have call predecessors, (2802), 2642 states have call successors, (2802) [2023-12-02 13:24:02,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38617 states to 38617 states and 49158 transitions. [2023-12-02 13:24:02,788 INFO L78 Accepts]: Start accepts. Automaton has 38617 states and 49158 transitions. Word has length 143 [2023-12-02 13:24:02,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:24:02,788 INFO L495 AbstractCegarLoop]: Abstraction has 38617 states and 49158 transitions. [2023-12-02 13:24:02,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 13:24:02,788 INFO L276 IsEmpty]: Start isEmpty. Operand 38617 states and 49158 transitions. [2023-12-02 13:24:02,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 13:24:02,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:24:02,805 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:24:02,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-02 13:24:03,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 13:24:03,005 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:24:03,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:24:03,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1361718471, now seen corresponding path program 1 times [2023-12-02 13:24:03,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:24:03,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725173712] [2023-12-02 13:24:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:24:03,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:24:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:24:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 32 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 13:24:03,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:24:03,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725173712] [2023-12-02 13:24:03,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725173712] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:24:03,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867502412] [2023-12-02 13:24:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:24:03,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:24:03,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:24:03,342 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:24:03,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 13:24:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:24:03,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:24:03,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:24:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 68 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:24:03,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:24:04,280 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 13:24:04,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867502412] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:24:04,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1109850226] [2023-12-02 13:24:04,284 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2023-12-02 13:24:04,284 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:24:04,284 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:24:04,285 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:24:04,285 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:24:12,104 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 13:24:12,106 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 142 for LOIs [2023-12-02 13:24:12,232 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 155 for LOIs [2023-12-02 13:24:12,418 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 13:24:12,419 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 13:24:12,433 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 13:24:12,484 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 14 for LOIs [2023-12-02 13:24:12,602 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:24:21,817 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '985646#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 13:24:21,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:24:21,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:24:21,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2023-12-02 13:24:21,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384643573] [2023-12-02 13:24:21,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:24:21,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 13:24:21,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:24:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 13:24:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=5951, Unknown=0, NotChecked=0, Total=6480 [2023-12-02 13:24:21,822 INFO L87 Difference]: Start difference. First operand 38617 states and 49158 transitions. Second operand has 17 states, 14 states have (on average 11.857142857142858) internal successors, (166), 15 states have internal predecessors, (166), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2023-12-02 13:24:34,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:24:34,330 INFO L93 Difference]: Finished difference Result 113478 states and 146935 transitions. [2023-12-02 13:24:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2023-12-02 13:24:34,330 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 11.857142857142858) internal successors, (166), 15 states have internal predecessors, (166), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 140 [2023-12-02 13:24:34,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:24:34,441 INFO L225 Difference]: With dead ends: 113478 [2023-12-02 13:24:34,442 INFO L226 Difference]: Without dead ends: 80656 [2023-12-02 13:24:34,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 473 SyntacticMatches, 2 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37174 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=6635, Invalid=78337, Unknown=0, NotChecked=0, Total=84972 [2023-12-02 13:24:34,473 INFO L413 NwaCegarLoop]: 3990 mSDtfsCounter, 16386 mSDsluCounter, 20963 mSDsCounter, 0 mSdLazyCounter, 5131 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16400 SdHoareTripleChecker+Valid, 24953 SdHoareTripleChecker+Invalid, 5695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 5131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:24:34,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16400 Valid, 24953 Invalid, 5695 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [564 Valid, 5131 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-02 13:24:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80656 states. [2023-12-02 13:24:37,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80656 to 34313. [2023-12-02 13:24:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34313 states, 30170 states have (on average 1.3012263838249918) internal successors, (39258), 30214 states have internal predecessors, (39258), 2152 states have call successors, (2152), 2014 states have call predecessors, (2152), 1989 states have return successors, (2280), 2085 states have call predecessors, (2280), 2150 states have call successors, (2280) [2023-12-02 13:24:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34313 states to 34313 states and 43690 transitions. [2023-12-02 13:24:37,344 INFO L78 Accepts]: Start accepts. Automaton has 34313 states and 43690 transitions. Word has length 140 [2023-12-02 13:24:37,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:24:37,344 INFO L495 AbstractCegarLoop]: Abstraction has 34313 states and 43690 transitions. [2023-12-02 13:24:37,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 11.857142857142858) internal successors, (166), 15 states have internal predecessors, (166), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2023-12-02 13:24:37,344 INFO L276 IsEmpty]: Start isEmpty. Operand 34313 states and 43690 transitions. [2023-12-02 13:24:37,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 13:24:37,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:24:37,364 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:24:37,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-02 13:24:37,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 13:24:37,565 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:24:37,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:24:37,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1737428112, now seen corresponding path program 1 times [2023-12-02 13:24:37,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:24:37,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665121684] [2023-12-02 13:24:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:24:37,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:24:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:24:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 13:24:37,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:24:37,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665121684] [2023-12-02 13:24:37,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665121684] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:24:37,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224232766] [2023-12-02 13:24:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:24:37,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:24:37,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:24:37,794 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:24:37,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 13:24:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:24:37,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 13:24:37,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:24:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 66 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:24:38,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:24:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 13:24:38,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224232766] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:24:38,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [389797445] [2023-12-02 13:24:38,629 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2023-12-02 13:24:38,629 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:24:38,629 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:24:38,629 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:24:38,629 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:24:47,637 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 13:24:47,638 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 142 for LOIs [2023-12-02 13:24:47,760 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 155 for LOIs [2023-12-02 13:24:47,946 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 13:24:47,947 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 13:24:47,956 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 13:24:48,111 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 14 for LOIs [2023-12-02 13:24:48,210 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:25:00,283 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1166222#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 13:25:00,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:25:00,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:25:00,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 6] total 18 [2023-12-02 13:25:00,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412412700] [2023-12-02 13:25:00,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:25:00,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 13:25:00,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:25:00,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 13:25:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=524, Invalid=6616, Unknown=0, NotChecked=0, Total=7140 [2023-12-02 13:25:00,286 INFO L87 Difference]: Start difference. First operand 34313 states and 43690 transitions. Second operand has 18 states, 15 states have (on average 11.266666666666667) internal successors, (169), 16 states have internal predecessors, (169), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2023-12-02 13:25:13,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:25:13,103 INFO L93 Difference]: Finished difference Result 92417 states and 119369 transitions. [2023-12-02 13:25:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2023-12-02 13:25:13,104 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 11.266666666666667) internal successors, (169), 16 states have internal predecessors, (169), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 142 [2023-12-02 13:25:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:25:13,210 INFO L225 Difference]: With dead ends: 92417 [2023-12-02 13:25:13,210 INFO L226 Difference]: Without dead ends: 67283 [2023-12-02 13:25:13,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30612 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=4918, Invalid=66104, Unknown=0, NotChecked=0, Total=71022 [2023-12-02 13:25:13,241 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 19122 mSDsluCounter, 23146 mSDsCounter, 0 mSdLazyCounter, 4678 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19132 SdHoareTripleChecker+Valid, 26939 SdHoareTripleChecker+Invalid, 5153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 4678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:25:13,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19132 Valid, 26939 Invalid, 5153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [475 Valid, 4678 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 13:25:13,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67283 states. [2023-12-02 13:25:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67283 to 29676. [2023-12-02 13:25:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29676 states, 26183 states have (on average 1.308711759538632) internal successors, (34266), 26233 states have internal predecessors, (34266), 1794 states have call successors, (1794), 1718 states have call predecessors, (1794), 1697 states have return successors, (1910), 1725 states have call predecessors, (1910), 1792 states have call successors, (1910) [2023-12-02 13:25:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29676 states to 29676 states and 37970 transitions. [2023-12-02 13:25:15,751 INFO L78 Accepts]: Start accepts. Automaton has 29676 states and 37970 transitions. Word has length 142 [2023-12-02 13:25:15,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:25:15,751 INFO L495 AbstractCegarLoop]: Abstraction has 29676 states and 37970 transitions. [2023-12-02 13:25:15,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 11.266666666666667) internal successors, (169), 16 states have internal predecessors, (169), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2023-12-02 13:25:15,751 INFO L276 IsEmpty]: Start isEmpty. Operand 29676 states and 37970 transitions. [2023-12-02 13:25:15,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 13:25:15,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:25:15,762 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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 13:25:15,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 13:25:15,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-02 13:25:15,964 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:25:15,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:25:15,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1465444410, now seen corresponding path program 1 times [2023-12-02 13:25:15,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:25:15,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370227242] [2023-12-02 13:25:15,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:15,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:25:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 13:25:16,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:25:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370227242] [2023-12-02 13:25:16,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370227242] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:25:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473183973] [2023-12-02 13:25:16,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:16,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:25:16,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:25:16,081 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:25:16,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 13:25:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:16,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:25:16,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:25:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-02 13:25:16,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:25:16,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473183973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:25:16,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:25:16,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-02 13:25:16,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343128281] [2023-12-02 13:25:16,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:25:16,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:25:16,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:25:16,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:25:16,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:25:16,250 INFO L87 Difference]: Start difference. First operand 29676 states and 37970 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 13:25:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:25:18,763 INFO L93 Difference]: Finished difference Result 59325 states and 75110 transitions. [2023-12-02 13:25:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:25:18,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 141 [2023-12-02 13:25:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:25:18,811 INFO L225 Difference]: With dead ends: 59325 [2023-12-02 13:25:18,811 INFO L226 Difference]: Without dead ends: 34202 [2023-12-02 13:25:18,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-02 13:25:18,835 INFO L413 NwaCegarLoop]: 3253 mSDtfsCounter, 3396 mSDsluCounter, 3371 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3396 SdHoareTripleChecker+Valid, 6624 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:25:18,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3396 Valid, 6624 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:25:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34202 states. [2023-12-02 13:25:21,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34202 to 32744. [2023-12-02 13:25:21,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32744 states, 28785 states have (on average 1.3042209484106306) internal successors, (37542), 28891 states have internal predecessors, (37542), 1988 states have call successors, (1988), 1880 states have call predecessors, (1988), 1969 states have return successors, (2458), 1973 states have call predecessors, (2458), 1986 states have call successors, (2458) [2023-12-02 13:25:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32744 states to 32744 states and 41988 transitions. [2023-12-02 13:25:21,165 INFO L78 Accepts]: Start accepts. Automaton has 32744 states and 41988 transitions. Word has length 141 [2023-12-02 13:25:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:25:21,165 INFO L495 AbstractCegarLoop]: Abstraction has 32744 states and 41988 transitions. [2023-12-02 13:25:21,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 13:25:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 32744 states and 41988 transitions. [2023-12-02 13:25:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 13:25:21,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:25:21,178 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:25:21,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 13:25:21,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 13:25:21,379 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:25:21,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:25:21,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1070698364, now seen corresponding path program 1 times [2023-12-02 13:25:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:25:21,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346338391] [2023-12-02 13:25:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:21,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:25:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 13:25:21,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:25:21,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346338391] [2023-12-02 13:25:21,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346338391] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:25:21,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133101029] [2023-12-02 13:25:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:21,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:25:21,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:25:21,422 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:25:21,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 13:25:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:21,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:25:21,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:25:21,580 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:25:21,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:25:21,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133101029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:25:21,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:25:21,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-12-02 13:25:21,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379490539] [2023-12-02 13:25:21,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:25:21,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:25:21,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:25:21,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:25:21,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:25:21,582 INFO L87 Difference]: Start difference. First operand 32744 states and 41988 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:25:24,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:25:24,063 INFO L93 Difference]: Finished difference Result 59563 states and 76570 transitions. [2023-12-02 13:25:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:25:24,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 141 [2023-12-02 13:25:24,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:25:24,113 INFO L225 Difference]: With dead ends: 59563 [2023-12-02 13:25:24,113 INFO L226 Difference]: Without dead ends: 31366 [2023-12-02 13:25:24,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 142 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 13:25:24,132 INFO L413 NwaCegarLoop]: 3267 mSDtfsCounter, 112 mSDsluCounter, 3167 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 6434 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:25:24,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 6434 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:25:24,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31366 states. [2023-12-02 13:25:26,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31366 to 30906. [2023-12-02 13:25:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30906 states, 27095 states have (on average 1.2793135264809006) internal successors, (34663), 27201 states have internal predecessors, (34663), 1914 states have call successors, (1914), 1806 states have call predecessors, (1914), 1895 states have return successors, (2384), 1899 states have call predecessors, (2384), 1912 states have call successors, (2384) [2023-12-02 13:25:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30906 states to 30906 states and 38961 transitions. [2023-12-02 13:25:26,238 INFO L78 Accepts]: Start accepts. Automaton has 30906 states and 38961 transitions. Word has length 141 [2023-12-02 13:25:26,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:25:26,238 INFO L495 AbstractCegarLoop]: Abstraction has 30906 states and 38961 transitions. [2023-12-02 13:25:26,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:25:26,238 INFO L276 IsEmpty]: Start isEmpty. Operand 30906 states and 38961 transitions. [2023-12-02 13:25:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 13:25:26,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:25:26,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:25:26,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 13:25:26,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 13:25:26,450 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:25:26,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:25:26,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2106884841, now seen corresponding path program 1 times [2023-12-02 13:25:26,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:25:26,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597960105] [2023-12-02 13:25:26,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:26,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:25:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 44 proven. 17 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 13:25:26,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:25:26,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597960105] [2023-12-02 13:25:26,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597960105] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:25:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493865277] [2023-12-02 13:25:26,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:26,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:25:26,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:25:26,551 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:25:26,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 13:25:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:26,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:25:26,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:25:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:25:26,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:25:26,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493865277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:25:26,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:25:26,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-12-02 13:25:26,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727379896] [2023-12-02 13:25:26,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:25:26,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:25:26,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:25:26,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:25:26,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:25:26,739 INFO L87 Difference]: Start difference. First operand 30906 states and 38961 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:25:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:25:29,104 INFO L93 Difference]: Finished difference Result 56197 states and 70930 transitions. [2023-12-02 13:25:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:25:29,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 141 [2023-12-02 13:25:29,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:25:29,152 INFO L225 Difference]: With dead ends: 56197 [2023-12-02 13:25:29,152 INFO L226 Difference]: Without dead ends: 32291 [2023-12-02 13:25:29,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:25:29,180 INFO L413 NwaCegarLoop]: 3202 mSDtfsCounter, 3368 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3368 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:25:29,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3368 Valid, 3238 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:25:29,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32291 states. [2023-12-02 13:25:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32291 to 32045. [2023-12-02 13:25:31,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32045 states, 28102 states have (on average 1.2655327022987688) internal successors, (35564), 28224 states have internal predecessors, (35564), 1946 states have call successors, (1946), 1878 states have call predecessors, (1946), 1995 states have return successors, (2567), 1943 states have call predecessors, (2567), 1944 states have call successors, (2567) [2023-12-02 13:25:31,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32045 states to 32045 states and 40077 transitions. [2023-12-02 13:25:31,469 INFO L78 Accepts]: Start accepts. Automaton has 32045 states and 40077 transitions. Word has length 141 [2023-12-02 13:25:31,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:25:31,469 INFO L495 AbstractCegarLoop]: Abstraction has 32045 states and 40077 transitions. [2023-12-02 13:25:31,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:25:31,469 INFO L276 IsEmpty]: Start isEmpty. Operand 32045 states and 40077 transitions. [2023-12-02 13:25:31,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 13:25:31,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:25:31,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:25:31,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-02 13:25:31,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:25:31,682 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:25:31,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:25:31,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1806833391, now seen corresponding path program 1 times [2023-12-02 13:25:31,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:25:31,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797092270] [2023-12-02 13:25:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:31,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:25:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:31,724 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-02 13:25:31,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:25:31,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797092270] [2023-12-02 13:25:31,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797092270] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:25:31,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268150055] [2023-12-02 13:25:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:31,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:25:31,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:25:31,726 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:25:31,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 13:25:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:31,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:25:31,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:25:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:25:31,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:25:31,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268150055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:25:31,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:25:31,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-12-02 13:25:31,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255543073] [2023-12-02 13:25:31,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:25:31,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:25:31,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:25:31,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:25:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:25:31,873 INFO L87 Difference]: Start difference. First operand 32045 states and 40077 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:25:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:25:34,261 INFO L93 Difference]: Finished difference Result 55818 states and 70216 transitions. [2023-12-02 13:25:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:25:34,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 138 [2023-12-02 13:25:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:25:34,304 INFO L225 Difference]: With dead ends: 55818 [2023-12-02 13:25:34,304 INFO L226 Difference]: Without dead ends: 30823 [2023-12-02 13:25:34,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 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 13:25:34,329 INFO L413 NwaCegarLoop]: 3270 mSDtfsCounter, 109 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:25:34,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 6441 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:25:34,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30823 states. [2023-12-02 13:25:36,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30823 to 30435. [2023-12-02 13:25:36,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30435 states, 26636 states have (on average 1.2393001952245082) internal successors, (33010), 26758 states have internal predecessors, (33010), 1874 states have call successors, (1874), 1806 states have call predecessors, (1874), 1923 states have return successors, (2495), 1871 states have call predecessors, (2495), 1872 states have call successors, (2495) [2023-12-02 13:25:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30435 states to 30435 states and 37379 transitions. [2023-12-02 13:25:36,718 INFO L78 Accepts]: Start accepts. Automaton has 30435 states and 37379 transitions. Word has length 138 [2023-12-02 13:25:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:25:36,718 INFO L495 AbstractCegarLoop]: Abstraction has 30435 states and 37379 transitions. [2023-12-02 13:25:36,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 13:25:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 30435 states and 37379 transitions. [2023-12-02 13:25:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 13:25:36,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:25:36,728 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:25:36,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 13:25:36,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 13:25:36,929 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:25:36,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:25:36,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1833087074, now seen corresponding path program 1 times [2023-12-02 13:25:36,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:25:36,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030551302] [2023-12-02 13:25:36,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:36,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:25:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 33 proven. 7 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 13:25:37,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:25:37,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030551302] [2023-12-02 13:25:37,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030551302] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:25:37,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266119658] [2023-12-02 13:25:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:37,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:25:37,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:25:37,266 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:25:37,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 13:25:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:37,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:25:37,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:25:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 13:25:37,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:25:37,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266119658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:25:37,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:25:37,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-02 13:25:37,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223475394] [2023-12-02 13:25:37,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:25:37,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:25:37,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:25:37,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:25:37,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-12-02 13:25:37,525 INFO L87 Difference]: Start difference. First operand 30435 states and 37379 transitions. Second operand has 6 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 13:25:40,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:25:40,039 INFO L93 Difference]: Finished difference Result 53770 states and 65503 transitions. [2023-12-02 13:25:40,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:25:40,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 138 [2023-12-02 13:25:40,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:25:40,080 INFO L225 Difference]: With dead ends: 53770 [2023-12-02 13:25:40,080 INFO L226 Difference]: Without dead ends: 28157 [2023-12-02 13:25:40,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-02 13:25:40,107 INFO L413 NwaCegarLoop]: 3137 mSDtfsCounter, 3489 mSDsluCounter, 3115 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3499 SdHoareTripleChecker+Valid, 6252 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:25:40,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3499 Valid, 6252 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:25:40,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28157 states. [2023-12-02 13:25:42,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28157 to 26394. [2023-12-02 13:25:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26394 states, 23191 states have (on average 1.2365572851537234) internal successors, (28677), 23266 states have internal predecessors, (28677), 1584 states have call successors, (1584), 1560 states have call predecessors, (1584), 1617 states have return successors, (1772), 1568 states have call predecessors, (1772), 1582 states have call successors, (1772) [2023-12-02 13:25:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26394 states to 26394 states and 32033 transitions. [2023-12-02 13:25:42,121 INFO L78 Accepts]: Start accepts. Automaton has 26394 states and 32033 transitions. Word has length 138 [2023-12-02 13:25:42,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:25:42,121 INFO L495 AbstractCegarLoop]: Abstraction has 26394 states and 32033 transitions. [2023-12-02 13:25:42,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 13:25:42,121 INFO L276 IsEmpty]: Start isEmpty. Operand 26394 states and 32033 transitions. [2023-12-02 13:25:42,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 13:25:42,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:25:42,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:25:42,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 13:25:42,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 13:25:42,331 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:25:42,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:25:42,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1108482768, now seen corresponding path program 1 times [2023-12-02 13:25:42,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:25:42,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689290058] [2023-12-02 13:25:42,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:42,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:25:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 54 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 13:25:42,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:25:42,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689290058] [2023-12-02 13:25:42,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689290058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:25:42,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989444306] [2023-12-02 13:25:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:42,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:25:42,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:25:42,439 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:25:42,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 13:25:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:42,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:25:42,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:25:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:25:42,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:25:42,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989444306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:25:42,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:25:42,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2023-12-02 13:25:42,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418602707] [2023-12-02 13:25:42,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:25:42,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:25:42,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:25:42,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:25:42,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:25:42,683 INFO L87 Difference]: Start difference. First operand 26394 states and 32033 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 13:25:45,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:25:45,705 INFO L93 Difference]: Finished difference Result 52668 states and 63348 transitions. [2023-12-02 13:25:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:25:45,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 139 [2023-12-02 13:25:45,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:25:45,754 INFO L225 Difference]: With dead ends: 52668 [2023-12-02 13:25:45,755 INFO L226 Difference]: Without dead ends: 36191 [2023-12-02 13:25:45,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:25:45,776 INFO L413 NwaCegarLoop]: 3263 mSDtfsCounter, 6744 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6744 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:25:45,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6744 Valid, 3381 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:25:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36191 states. [2023-12-02 13:25:48,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36191 to 34254. [2023-12-02 13:25:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34254 states, 30003 states have (on average 1.2168116521681165) internal successors, (36508), 30118 states have internal predecessors, (36508), 2057 states have call successors, (2057), 2035 states have call predecessors, (2057), 2192 states have return successors, (2347), 2101 states have call predecessors, (2347), 2055 states have call successors, (2347) [2023-12-02 13:25:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34254 states to 34254 states and 40912 transitions. [2023-12-02 13:25:48,502 INFO L78 Accepts]: Start accepts. Automaton has 34254 states and 40912 transitions. Word has length 139 [2023-12-02 13:25:48,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:25:48,502 INFO L495 AbstractCegarLoop]: Abstraction has 34254 states and 40912 transitions. [2023-12-02 13:25:48,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 13:25:48,502 INFO L276 IsEmpty]: Start isEmpty. Operand 34254 states and 40912 transitions. [2023-12-02 13:25:48,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 13:25:48,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:25:48,511 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:25:48,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 13:25:48,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:25:48,712 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:25:48,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:25:48,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1333060714, now seen corresponding path program 1 times [2023-12-02 13:25:48,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:25:48,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380162625] [2023-12-02 13:25:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:48,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:25:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 13:25:48,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:25:48,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380162625] [2023-12-02 13:25:48,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380162625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:25:48,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:25:48,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:25:48,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556099552] [2023-12-02 13:25:48,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:25:48,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:25:48,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:25:48,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:25:48,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:25:48,849 INFO L87 Difference]: Start difference. First operand 34254 states and 40912 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:25:52,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:25:52,445 INFO L93 Difference]: Finished difference Result 61212 states and 71803 transitions. [2023-12-02 13:25:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:25:52,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 140 [2023-12-02 13:25:52,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:25:52,494 INFO L225 Difference]: With dead ends: 61212 [2023-12-02 13:25:52,494 INFO L226 Difference]: Without dead ends: 36716 [2023-12-02 13:25:52,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:25:52,518 INFO L413 NwaCegarLoop]: 3245 mSDtfsCounter, 102 mSDsluCounter, 6371 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 9616 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:25:52,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 9616 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:25:52,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36716 states. [2023-12-02 13:25:55,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36716 to 33936. [2023-12-02 13:25:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33936 states, 29662 states have (on average 1.2005933517631988) internal successors, (35612), 29792 states have internal predecessors, (35612), 2049 states have call successors, (2049), 2019 states have call predecessors, (2049), 2223 states have return successors, (2483), 2125 states have call predecessors, (2483), 2047 states have call successors, (2483) [2023-12-02 13:25:55,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33936 states to 33936 states and 40144 transitions. [2023-12-02 13:25:55,412 INFO L78 Accepts]: Start accepts. Automaton has 33936 states and 40144 transitions. Word has length 140 [2023-12-02 13:25:55,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:25:55,413 INFO L495 AbstractCegarLoop]: Abstraction has 33936 states and 40144 transitions. [2023-12-02 13:25:55,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 13:25:55,413 INFO L276 IsEmpty]: Start isEmpty. Operand 33936 states and 40144 transitions. [2023-12-02 13:25:55,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-02 13:25:55,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:25:55,421 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 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, 1, 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 13:25:55,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-02 13:25:55,422 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:25:55,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:25:55,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1909490108, now seen corresponding path program 1 times [2023-12-02 13:25:55,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:25:55,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902794288] [2023-12-02 13:25:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:55,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:25:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 13:25:55,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:25:55,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902794288] [2023-12-02 13:25:55,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902794288] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:25:55,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784377196] [2023-12-02 13:25:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:25:55,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:25:55,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:25:55,666 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:25:55,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 13:25:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:25:55,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 13:25:55,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:25:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 66 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:25:55,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:25:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 13:25:56,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784377196] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:25:56,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1026976436] [2023-12-02 13:25:56,493 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2023-12-02 13:25:56,493 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:25:56,493 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:25:56,494 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:25:56,494 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:26:04,923 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 13:26:04,924 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 142 for LOIs [2023-12-02 13:26:05,048 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 155 for LOIs [2023-12-02 13:26:05,237 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 13:26:05,238 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 13:26:05,249 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 13:26:05,297 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 14 for LOIs [2023-12-02 13:26:05,409 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:26:15,776 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2047020#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 13:26:15,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:26:15,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:26:15,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 6] total 19 [2023-12-02 13:26:15,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965542175] [2023-12-02 13:26:15,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:26:15,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 13:26:15,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:26:15,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 13:26:15,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=7285, Unknown=0, NotChecked=0, Total=7832 [2023-12-02 13:26:15,778 INFO L87 Difference]: Start difference. First operand 33936 states and 40144 transitions. Second operand has 19 states, 16 states have (on average 10.8125) internal successors, (173), 17 states have internal predecessors, (173), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2023-12-02 13:26:27,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:26:27,056 INFO L93 Difference]: Finished difference Result 64342 states and 77388 transitions. [2023-12-02 13:26:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2023-12-02 13:26:27,057 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 10.8125) internal successors, (173), 17 states have internal predecessors, (173), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 145 [2023-12-02 13:26:27,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:26:27,112 INFO L225 Difference]: With dead ends: 64342 [2023-12-02 13:26:27,112 INFO L226 Difference]: Without dead ends: 44121 [2023-12-02 13:26:27,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 452 SyntacticMatches, 2 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36653 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=5272, Invalid=77960, Unknown=0, NotChecked=0, Total=83232 [2023-12-02 13:26:27,131 INFO L413 NwaCegarLoop]: 3731 mSDtfsCounter, 12471 mSDsluCounter, 23420 mSDsCounter, 0 mSdLazyCounter, 5254 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12480 SdHoareTripleChecker+Valid, 27151 SdHoareTripleChecker+Invalid, 5663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 5254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:26:27,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12480 Valid, 27151 Invalid, 5663 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [409 Valid, 5254 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 13:26:27,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44121 states. [2023-12-02 13:26:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44121 to 28361. [2023-12-02 13:26:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28361 states, 24804 states have (on average 1.207426221577165) internal successors, (29949), 24917 states have internal predecessors, (29949), 1697 states have call successors, (1697), 1679 states have call predecessors, (1697), 1858 states have return successors, (2086), 1765 states have call predecessors, (2086), 1695 states have call successors, (2086) [2023-12-02 13:26:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28361 states to 28361 states and 33732 transitions. [2023-12-02 13:26:29,737 INFO L78 Accepts]: Start accepts. Automaton has 28361 states and 33732 transitions. Word has length 145 [2023-12-02 13:26:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:26:29,737 INFO L495 AbstractCegarLoop]: Abstraction has 28361 states and 33732 transitions. [2023-12-02 13:26:29,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 10.8125) internal successors, (173), 17 states have internal predecessors, (173), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2023-12-02 13:26:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 28361 states and 33732 transitions. [2023-12-02 13:26:29,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-02 13:26:29,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:26:29,745 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:26:29,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 13:26:29,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:26:29,945 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:26:29,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:26:29,946 INFO L85 PathProgramCache]: Analyzing trace with hash 336031483, now seen corresponding path program 1 times [2023-12-02 13:26:29,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:26:29,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049601699] [2023-12-02 13:26:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:26:29,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:26:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:26:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 13:26:30,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:26:30,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049601699] [2023-12-02 13:26:30,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049601699] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:26:30,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536600084] [2023-12-02 13:26:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:26:30,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:26:30,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:26:30,486 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:26:30,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 13:26:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:26:30,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 13:26:30,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:26:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-02 13:26:30,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:26:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 33 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 13:26:31,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536600084] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:26:31,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1382557686] [2023-12-02 13:26:31,472 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2023-12-02 13:26:31,473 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:26:31,473 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:26:31,473 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:26:31,473 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:26:57,901 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 13:26:57,903 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 1 for LOIs [2023-12-02 13:26:57,908 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 1 for LOIs [2023-12-02 13:26:57,914 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 13:26:57,915 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 13:26:57,925 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 13:26:58,113 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 1 for LOIs [2023-12-02 13:26:58,232 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:27:18,955 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2157869#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 13:27:18,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:27:18,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:27:18,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 12] total 36 [2023-12-02 13:27:18,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724934150] [2023-12-02 13:27:18,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:27:18,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 13:27:18,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:27:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 13:27:18,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=644, Invalid=11128, Unknown=0, NotChecked=0, Total=11772 [2023-12-02 13:27:18,959 INFO L87 Difference]: Start difference. First operand 28361 states and 33732 transitions. Second operand has 36 states, 24 states have (on average 10.291666666666666) internal successors, (247), 27 states have internal predecessors, (247), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-02 13:27:33,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:27:33,077 INFO L93 Difference]: Finished difference Result 86084 states and 100662 transitions. [2023-12-02 13:27:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-02 13:27:33,078 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 24 states have (on average 10.291666666666666) internal successors, (247), 27 states have internal predecessors, (247), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) Word has length 147 [2023-12-02 13:27:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:27:33,190 INFO L225 Difference]: With dead ends: 86084 [2023-12-02 13:27:33,190 INFO L226 Difference]: Without dead ends: 70818 [2023-12-02 13:27:33,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12876 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=3163, Invalid=32747, Unknown=0, NotChecked=0, Total=35910 [2023-12-02 13:27:33,210 INFO L413 NwaCegarLoop]: 3166 mSDtfsCounter, 26468 mSDsluCounter, 34928 mSDsCounter, 0 mSdLazyCounter, 5322 mSolverCounterSat, 1868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26468 SdHoareTripleChecker+Valid, 38094 SdHoareTripleChecker+Invalid, 7190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1868 IncrementalHoareTripleChecker+Valid, 5322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:27:33,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26468 Valid, 38094 Invalid, 7190 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1868 Valid, 5322 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 13:27:33,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70818 states. [2023-12-02 13:27:36,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70818 to 26241. [2023-12-02 13:27:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26241 states, 22928 states have (on average 1.2129710397766922) internal successors, (27811), 23030 states have internal predecessors, (27811), 1581 states have call successors, (1581), 1560 states have call predecessors, (1581), 1730 states have return successors, (1839), 1651 states have call predecessors, (1839), 1579 states have call successors, (1839) [2023-12-02 13:27:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26241 states to 26241 states and 31231 transitions. [2023-12-02 13:27:36,188 INFO L78 Accepts]: Start accepts. Automaton has 26241 states and 31231 transitions. Word has length 147 [2023-12-02 13:27:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:27:36,188 INFO L495 AbstractCegarLoop]: Abstraction has 26241 states and 31231 transitions. [2023-12-02 13:27:36,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 24 states have (on average 10.291666666666666) internal successors, (247), 27 states have internal predecessors, (247), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-02 13:27:36,188 INFO L276 IsEmpty]: Start isEmpty. Operand 26241 states and 31231 transitions. [2023-12-02 13:27:36,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-02 13:27:36,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:27:36,194 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 13:27:36,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 13:27:36,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-02 13:27:36,395 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:27:36,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:27:36,395 INFO L85 PathProgramCache]: Analyzing trace with hash -881975283, now seen corresponding path program 1 times [2023-12-02 13:27:36,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:27:36,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208202967] [2023-12-02 13:27:36,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:27:36,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:27:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:27:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 13:27:36,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:27:36,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208202967] [2023-12-02 13:27:36,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208202967] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:27:36,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310409355] [2023-12-02 13:27:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:27:36,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:27:36,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:27:36,905 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:27:36,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 13:27:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:27:37,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 13:27:37,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:27:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-02 13:27:37,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:27:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 41 proven. 7 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-02 13:27:37,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310409355] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:27:37,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1864505745] [2023-12-02 13:27:37,846 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2023-12-02 13:27:37,846 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:27:37,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:27:37,847 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:27:37,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:28:00,743 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 13:28:00,744 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 1 for LOIs [2023-12-02 13:28:00,751 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 1 for LOIs [2023-12-02 13:28:00,758 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 13:28:00,759 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 13:28:00,771 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 13:28:00,910 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 1 for LOIs [2023-12-02 13:28:01,024 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:28:18,138 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2290884#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 13:28:18,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:28:18,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:28:18,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 12] total 33 [2023-12-02 13:28:18,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50056595] [2023-12-02 13:28:18,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:28:18,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 13:28:18,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:28:18,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 13:28:18,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=10514, Unknown=0, NotChecked=0, Total=11130 [2023-12-02 13:28:18,141 INFO L87 Difference]: Start difference. First operand 26241 states and 31231 transitions. Second operand has 33 states, 21 states have (on average 11.857142857142858) internal successors, (249), 26 states have internal predecessors, (249), 13 states have call successors, (40), 9 states have call predecessors, (40), 18 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) [2023-12-02 13:28:31,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:28:31,547 INFO L93 Difference]: Finished difference Result 74347 states and 87595 transitions. [2023-12-02 13:28:31,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-02 13:28:31,547 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 21 states have (on average 11.857142857142858) internal successors, (249), 26 states have internal predecessors, (249), 13 states have call successors, (40), 9 states have call predecessors, (40), 18 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) Word has length 149 [2023-12-02 13:28:31,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:28:31,642 INFO L225 Difference]: With dead ends: 74347 [2023-12-02 13:28:31,642 INFO L226 Difference]: Without dead ends: 58381 [2023-12-02 13:28:31,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11952 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=2681, Invalid=29899, Unknown=0, NotChecked=0, Total=32580 [2023-12-02 13:28:31,666 INFO L413 NwaCegarLoop]: 3178 mSDtfsCounter, 26176 mSDsluCounter, 29482 mSDsCounter, 0 mSdLazyCounter, 5804 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26183 SdHoareTripleChecker+Valid, 32660 SdHoareTripleChecker+Invalid, 6862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 5804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:28:31,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26183 Valid, 32660 Invalid, 6862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1058 Valid, 5804 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 13:28:31,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58381 states. [2023-12-02 13:28:34,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58381 to 25543. [2023-12-02 13:28:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25543 states, 22290 states have (on average 1.217900403768506) internal successors, (27147), 22382 states have internal predecessors, (27147), 1567 states have call successors, (1567), 1545 states have call predecessors, (1567), 1684 states have return successors, (1755), 1616 states have call predecessors, (1755), 1565 states have call successors, (1755) [2023-12-02 13:28:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25543 states to 25543 states and 30469 transitions. [2023-12-02 13:28:34,855 INFO L78 Accepts]: Start accepts. Automaton has 25543 states and 30469 transitions. Word has length 149 [2023-12-02 13:28:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:28:34,855 INFO L495 AbstractCegarLoop]: Abstraction has 25543 states and 30469 transitions. [2023-12-02 13:28:34,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 21 states have (on average 11.857142857142858) internal successors, (249), 26 states have internal predecessors, (249), 13 states have call successors, (40), 9 states have call predecessors, (40), 18 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) [2023-12-02 13:28:34,855 INFO L276 IsEmpty]: Start isEmpty. Operand 25543 states and 30469 transitions. [2023-12-02 13:28:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-02 13:28:34,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:28:34,864 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:28:34,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 13:28:35,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-02 13:28:35,065 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:28:35,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:28:35,065 INFO L85 PathProgramCache]: Analyzing trace with hash 457402318, now seen corresponding path program 1 times [2023-12-02 13:28:35,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:28:35,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686010378] [2023-12-02 13:28:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:28:35,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:28:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:28:35,208 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 53 proven. 42 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-02 13:28:35,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:28:35,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686010378] [2023-12-02 13:28:35,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686010378] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:28:35,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392410701] [2023-12-02 13:28:35,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:28:35,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:28:35,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:28:35,209 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:28:35,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 13:28:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:28:35,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 13:28:35,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:28:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 13:28:35,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:28:35,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392410701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:28:35,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:28:35,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2023-12-02 13:28:35,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759358084] [2023-12-02 13:28:35,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:28:35,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:28:35,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:28:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:28:35,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:28:35,401 INFO L87 Difference]: Start difference. First operand 25543 states and 30469 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-02 13:28:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:28:38,309 INFO L93 Difference]: Finished difference Result 40911 states and 47917 transitions. [2023-12-02 13:28:38,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:28:38,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 171 [2023-12-02 13:28:38,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:28:38,337 INFO L225 Difference]: With dead ends: 40911 [2023-12-02 13:28:38,337 INFO L226 Difference]: Without dead ends: 19447 [2023-12-02 13:28:38,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:28:38,356 INFO L413 NwaCegarLoop]: 3235 mSDtfsCounter, 267 mSDsluCounter, 9411 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 12646 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:28:38,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 12646 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:28:38,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19447 states. [2023-12-02 13:28:40,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19447 to 17076. [2023-12-02 13:28:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17076 states, 14937 states have (on average 1.2183838789582915) internal successors, (18199), 15005 states have internal predecessors, (18199), 1025 states have call successors, (1025), 1003 states have call predecessors, (1025), 1112 states have return successors, (1167), 1068 states have call predecessors, (1167), 1023 states have call successors, (1167) [2023-12-02 13:28:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17076 states to 17076 states and 20391 transitions. [2023-12-02 13:28:40,443 INFO L78 Accepts]: Start accepts. Automaton has 17076 states and 20391 transitions. Word has length 171 [2023-12-02 13:28:40,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:28:40,444 INFO L495 AbstractCegarLoop]: Abstraction has 17076 states and 20391 transitions. [2023-12-02 13:28:40,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-02 13:28:40,444 INFO L276 IsEmpty]: Start isEmpty. Operand 17076 states and 20391 transitions. [2023-12-02 13:28:40,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-02 13:28:40,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:28:40,453 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-02 13:28:40,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 13:28:40,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-02 13:28:40,653 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:28:40,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:28:40,654 INFO L85 PathProgramCache]: Analyzing trace with hash 515099182, now seen corresponding path program 1 times [2023-12-02 13:28:40,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:28:40,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933514524] [2023-12-02 13:28:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:28:40,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:28:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:28:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 55 proven. 66 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-02 13:28:40,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:28:40,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933514524] [2023-12-02 13:28:40,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933514524] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:28:40,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075415250] [2023-12-02 13:28:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:28:40,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:28:40,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:28:40,939 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:28:40,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 13:28:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:28:41,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 13:28:41,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:28:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 13:28:41,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:28:41,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075415250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:28:41,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:28:41,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2023-12-02 13:28:41,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412268525] [2023-12-02 13:28:41,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:28:41,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:28:41,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:28:41,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:28:41,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:28:41,159 INFO L87 Difference]: Start difference. First operand 17076 states and 20391 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-02 13:28:44,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:28:44,110 INFO L93 Difference]: Finished difference Result 30901 states and 35741 transitions. [2023-12-02 13:28:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:28:44,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 204 [2023-12-02 13:28:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:28:44,133 INFO L225 Difference]: With dead ends: 30901 [2023-12-02 13:28:44,133 INFO L226 Difference]: Without dead ends: 17268 [2023-12-02 13:28:44,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:28:44,143 INFO L413 NwaCegarLoop]: 3227 mSDtfsCounter, 274 mSDsluCounter, 12553 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 15780 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:28:44,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 15780 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 13:28:44,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17268 states. [2023-12-02 13:28:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17268 to 16028. [2023-12-02 13:28:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16028 states, 13973 states have (on average 1.215415444070708) internal successors, (16983), 14051 states have internal predecessors, (16983), 994 states have call successors, (994), 956 states have call predecessors, (994), 1059 states have return successors, (1136), 1021 states have call predecessors, (1136), 992 states have call successors, (1136) [2023-12-02 13:28:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16028 states to 16028 states and 19113 transitions. [2023-12-02 13:28:46,078 INFO L78 Accepts]: Start accepts. Automaton has 16028 states and 19113 transitions. Word has length 204 [2023-12-02 13:28:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:28:46,078 INFO L495 AbstractCegarLoop]: Abstraction has 16028 states and 19113 transitions. [2023-12-02 13:28:46,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-02 13:28:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 16028 states and 19113 transitions. [2023-12-02 13:28:46,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-02 13:28:46,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:28:46,084 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 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 13:28:46,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 13:28:46,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-02 13:28:46,284 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:28:46,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:28:46,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1020730466, now seen corresponding path program 1 times [2023-12-02 13:28:46,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:28:46,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910789324] [2023-12-02 13:28:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:28:46,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:28:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:28:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-02 13:28:46,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:28:46,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910789324] [2023-12-02 13:28:46,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910789324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:28:46,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:28:46,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 13:28:46,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318849821] [2023-12-02 13:28:46,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:28:46,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:28:46,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:28:46,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:28:46,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:28:46,456 INFO L87 Difference]: Start difference. First operand 16028 states and 19113 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-02 13:28:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:28:52,855 INFO L93 Difference]: Finished difference Result 43585 states and 49664 transitions. [2023-12-02 13:28:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:28:52,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 238 [2023-12-02 13:28:52,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:28:52,915 INFO L225 Difference]: With dead ends: 43585 [2023-12-02 13:28:52,915 INFO L226 Difference]: Without dead ends: 36562 [2023-12-02 13:28:52,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:28:52,929 INFO L413 NwaCegarLoop]: 3569 mSDtfsCounter, 3825 mSDsluCounter, 13736 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3825 SdHoareTripleChecker+Valid, 17305 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:28:52,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3825 Valid, 17305 Invalid, 2190 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 13:28:52,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36562 states. [2023-12-02 13:28:57,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36562 to 28849. [2023-12-02 13:28:57,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28849 states, 24861 states have (on average 1.1745303889626322) internal successors, (29200), 25005 states have internal predecessors, (29200), 1918 states have call successors, (1918), 1829 states have call predecessors, (1918), 2068 states have return successors, (2214), 2015 states have call predecessors, (2214), 1916 states have call successors, (2214) [2023-12-02 13:28:57,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28849 states to 28849 states and 33332 transitions. [2023-12-02 13:28:57,067 INFO L78 Accepts]: Start accepts. Automaton has 28849 states and 33332 transitions. Word has length 238 [2023-12-02 13:28:57,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:28:57,067 INFO L495 AbstractCegarLoop]: Abstraction has 28849 states and 33332 transitions. [2023-12-02 13:28:57,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-02 13:28:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 28849 states and 33332 transitions. [2023-12-02 13:28:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-02 13:28:57,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:28:57,074 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:57,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-02 13:28:57,074 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:28:57,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:28:57,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1653086132, now seen corresponding path program 1 times [2023-12-02 13:28:57,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:28:57,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567288894] [2023-12-02 13:28:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:28:57,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:28:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:28:57,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:28:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:28:57,283 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 13:28:57,283 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 13:28:57,284 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 13:28:57,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 13:28:57,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-02 13:28:57,288 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-12-02 13:28:57,292 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 13:28:57,404 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 13:28:57,408 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 13:28:57,434 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 13:28:57,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:28:57 BoogieIcfgContainer [2023-12-02 13:28:57,482 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 13:28:57,482 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 13:28:57,482 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 13:28:57,483 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 13:28:57,483 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:22:22" (3/4) ... [2023-12-02 13:28:57,484 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 13:28:57,537 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 13:28:57,539 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 13:28:57,559 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 13:28:57,708 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 13:28:57,708 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 13:28:57,709 INFO L158 Benchmark]: Toolchain (without parser) took 408818.66ms. Allocated memory was 153.1MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 77.2MB in the beginning and 1.1GB in the end (delta: -985.5MB). Peak memory consumption was 3.2GB. Max. memory is 16.1GB. [2023-12-02 13:28:57,709 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:28:57,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3145.35ms. Allocated memory was 153.1MB in the beginning and 211.8MB in the end (delta: 58.7MB). Free memory was 77.1MB in the beginning and 73.2MB in the end (delta: 3.9MB). Peak memory consumption was 93.0MB. Max. memory is 16.1GB. [2023-12-02 13:28:57,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 412.37ms. Allocated memory was 211.8MB in the beginning and 266.3MB in the end (delta: 54.5MB). Free memory was 73.2MB in the beginning and 126.3MB in the end (delta: -53.2MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2023-12-02 13:28:57,710 INFO L158 Benchmark]: Boogie Preprocessor took 617.27ms. Allocated memory is still 266.3MB. Free memory was 125.5MB in the beginning and 99.9MB in the end (delta: 25.5MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2023-12-02 13:28:57,710 INFO L158 Benchmark]: RCFGBuilder took 9360.83ms. Allocated memory was 266.3MB in the beginning and 1.1GB in the end (delta: 786.4MB). Free memory was 99.9MB in the beginning and 684.1MB in the end (delta: -584.2MB). Peak memory consumption was 510.6MB. Max. memory is 16.1GB. [2023-12-02 13:28:57,711 INFO L158 Benchmark]: TraceAbstraction took 395050.71ms. Allocated memory was 1.1GB in the beginning and 4.4GB in the end (delta: 3.3GB). Free memory was 683.1MB in the beginning and 1.1GB in the end (delta: -420.6MB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2023-12-02 13:28:57,711 INFO L158 Benchmark]: Witness Printer took 226.19ms. Allocated memory is still 4.4GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 40.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-12-02 13:28:57,712 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3145.35ms. Allocated memory was 153.1MB in the beginning and 211.8MB in the end (delta: 58.7MB). Free memory was 77.1MB in the beginning and 73.2MB in the end (delta: 3.9MB). Peak memory consumption was 93.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 412.37ms. Allocated memory was 211.8MB in the beginning and 266.3MB in the end (delta: 54.5MB). Free memory was 73.2MB in the beginning and 126.3MB in the end (delta: -53.2MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 617.27ms. Allocated memory is still 266.3MB. Free memory was 125.5MB in the beginning and 99.9MB in the end (delta: 25.5MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. * RCFGBuilder took 9360.83ms. Allocated memory was 266.3MB in the beginning and 1.1GB in the end (delta: 786.4MB). Free memory was 99.9MB in the beginning and 684.1MB in the end (delta: -584.2MB). Peak memory consumption was 510.6MB. Max. memory is 16.1GB. * TraceAbstraction took 395050.71ms. Allocated memory was 1.1GB in the beginning and 4.4GB in the end (delta: 3.3GB). Free memory was 683.1MB in the beginning and 1.1GB in the end (delta: -420.6MB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. * Witness Printer took 226.19ms. Allocated memory is still 4.4GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 40.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 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: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int t2_pc = 0; [L11180] int t3_pc = 0; [L11181] int t4_pc = 0; [L11182] int m_st ; [L11183] int t1_st ; [L11184] int t2_st ; [L11185] int t3_st ; [L11186] int t4_st ; [L11187] int m_i ; [L11188] int t1_i ; [L11189] int t2_i ; [L11190] int t3_i ; [L11191] int t4_i ; [L11192] int M_E = 2; [L11193] int T1_E = 2; [L11194] int T2_E = 2; [L11195] int T3_E = 2; [L11196] int T4_E = 2; [L11197] int E_M = 2; [L11198] int E_1 = 2; [L11199] int E_2 = 2; [L11200] int E_3 = 2; [L11201] int E_4 = 2; [L11208] int token ; [L11210] int local ; [L12026] COND FALSE !(__VERIFIER_nondet_int()) [L12029] CALL main2() [L12013] int __retres1 ; [L12017] CALL init_model() [L11925] m_i = 1 [L11926] t1_i = 1 [L11927] t2_i = 1 [L11928] t3_i = 1 [L11929] t4_i = 1 [L12017] RET init_model() [L12018] CALL start_simulation() [L11954] int kernel_st ; [L11955] int tmp ; [L11956] int tmp___0 ; [L11960] kernel_st = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11961] FCALL update_channels() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11962] CALL init_threads() [L11518] COND TRUE m_i == 1 [L11519] m_st = 0 [L11523] COND TRUE t1_i == 1 [L11524] t1_st = 0 [L11528] COND TRUE t2_i == 1 [L11529] t2_st = 0 [L11533] COND TRUE t3_i == 1 [L11534] t3_st = 0 [L11538] COND TRUE t4_i == 1 [L11539] t4_st = 0 [L11962] RET init_threads() [L11963] CALL fire_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_4)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, \old(T4_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11679] COND FALSE !(M_E == 0) [L11684] COND FALSE !(T1_E == 0) [L11689] COND FALSE !(T2_E == 0) [L11694] COND FALSE !(T3_E == 0) [L11699] COND FALSE !(T4_E == 0) [L11704] COND FALSE !(E_M == 0) [L11709] COND FALSE !(E_1 == 0) [L11714] COND FALSE !(E_2 == 0) [L11719] COND FALSE !(E_3 == 0) [L11724] COND FALSE !(E_4 == 0) [L11963] RET fire_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11964] CALL activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11792] int tmp ; [L11793] int tmp___0 ; [L11794] int tmp___1 ; [L11795] int tmp___2 ; [L11796] int tmp___3 ; [L11800] CALL, EXPR is_master_triggered() [L11412] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11415] COND FALSE !(m_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11425] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11427] return (__retres1); [L11800] RET, EXPR is_master_triggered() [L11800] tmp = is_master_triggered() [L11802] COND FALSE !(\read(tmp)) [L11808] CALL, EXPR is_transmit1_triggered() [L11431] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11434] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11444] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11446] return (__retres1); [L11808] RET, EXPR is_transmit1_triggered() [L11808] tmp___0 = is_transmit1_triggered() [L11810] COND FALSE !(\read(tmp___0)) [L11816] CALL, EXPR is_transmit2_triggered() [L11450] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11453] COND FALSE !(t2_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11463] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11465] return (__retres1); [L11816] RET, EXPR is_transmit2_triggered() [L11816] tmp___1 = is_transmit2_triggered() [L11818] COND FALSE !(\read(tmp___1)) [L11824] CALL, EXPR is_transmit3_triggered() [L11469] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11472] COND FALSE !(t3_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11482] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11484] return (__retres1); [L11824] RET, EXPR is_transmit3_triggered() [L11824] tmp___2 = is_transmit3_triggered() [L11826] COND FALSE !(\read(tmp___2)) [L11832] CALL, EXPR is_transmit4_triggered() [L11488] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11491] COND FALSE !(t4_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11501] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11503] return (__retres1); [L11832] RET, EXPR is_transmit4_triggered() [L11832] tmp___3 = is_transmit4_triggered() [L11834] COND FALSE !(\read(tmp___3)) [L11964] RET activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11965] CALL reset_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_4)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, \old(T4_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11737] COND FALSE !(M_E == 1) [L11742] COND FALSE !(T1_E == 1) [L11747] COND FALSE !(T2_E == 1) [L11752] COND FALSE !(T3_E == 1) [L11757] COND FALSE !(T4_E == 1) [L11762] COND FALSE !(E_M == 1) [L11767] COND FALSE !(E_1 == 1) [L11772] COND FALSE !(E_2 == 1) [L11777] COND FALSE !(E_3 == 1) [L11782] COND FALSE !(E_4 == 1) [L11965] RET reset_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11968] COND TRUE 1 [L11971] kernel_st = 1 [L11972] CALL eval() [L11584] int tmp ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11588] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11591] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11548] int __retres1 ; [L11551] COND TRUE m_st == 0 [L11552] __retres1 = 1 [L11579] return (__retres1); [L11591] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11591] tmp = exists_runnable_thread() [L11593] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, tmp=1, token=0] [L11598] COND TRUE m_st == 0 [L11599] int tmp_ndt_1; [L11600] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L11601] COND FALSE, EXPR !(\read(tmp_ndt_1)) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, tmp=1, tmp_ndt_1=0, token=0] [L11598-L11609] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, tmp=1, token=0] [L11612] COND TRUE t1_st == 0 [L11613] int tmp_ndt_2; [L11614] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L11615] COND TRUE, EXPR \read(tmp_ndt_2) [L11617] EXPR t1_st = 1 [L11618] CALL, EXPR transmit1() [L11271] COND TRUE t1_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=1, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11282] COND TRUE 1 [L11284] t1_pc = 1 [L11285] t1_st = 2 [L11618] RET, EXPR transmit1() [L11612-L11623] { int tmp_ndt_2; tmp_ndt_2 = __VERIFIER_nondet_int(); if (tmp_ndt_2) { { t1_st = 1; transmit1(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, tmp=1, token=0] [L11626] COND TRUE t2_st == 0 [L11627] int tmp_ndt_3; [L11628] EXPR tmp_ndt_3 = __VERIFIER_nondet_int() [L11629] COND TRUE, EXPR \read(tmp_ndt_3) [L11631] EXPR t2_st = 1 [L11632] CALL, EXPR transmit2() [L11307] COND TRUE t2_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=1, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11318] COND TRUE 1 [L11320] t2_pc = 1 [L11321] t2_st = 2 [L11632] RET, EXPR transmit2() [L11626-L11637] { int tmp_ndt_3; tmp_ndt_3 = __VERIFIER_nondet_int(); if (tmp_ndt_3) { { t2_st = 1; transmit2(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, tmp=1, token=0] [L11640] COND TRUE t3_st == 0 [L11641] int tmp_ndt_4; [L11642] EXPR tmp_ndt_4 = __VERIFIER_nondet_int() [L11643] COND TRUE, EXPR \read(tmp_ndt_4) [L11645] EXPR t3_st = 1 [L11646] CALL, EXPR transmit3() [L11343] COND TRUE t3_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=0, t3_st=1, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11354] COND TRUE 1 [L11356] t3_pc = 1 [L11357] t3_st = 2 [L11646] RET, EXPR transmit3() [L11640-L11651] { int tmp_ndt_4; tmp_ndt_4 = __VERIFIER_nondet_int(); if (tmp_ndt_4) { { t3_st = 1; transmit3(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=0, t4_st=0, tmp=1, token=0] [L11654] COND TRUE t4_st == 0 [L11655] int tmp_ndt_5; [L11656] EXPR tmp_ndt_5 = __VERIFIER_nondet_int() [L11657] COND TRUE, EXPR \read(tmp_ndt_5) [L11659] EXPR t4_st = 1 [L11660] CALL, EXPR transmit4() [L11379] COND TRUE t4_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=0, t4_st=1, token=0] [L11390] COND TRUE 1 [L11392] t4_pc = 1 [L11393] t4_st = 2 [L11660] RET, EXPR transmit4() [L11654-L11665] { int tmp_ndt_5; tmp_ndt_5 = __VERIFIER_nondet_int(); if (tmp_ndt_5) { { t4_st = 1; transmit4(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=0] [L11588] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=0] [L11591] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11548] int __retres1 ; [L11551] COND TRUE m_st == 0 [L11552] __retres1 = 1 [L11579] return (__retres1); [L11591] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=0] [L11591] tmp = exists_runnable_thread() [L11593] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=0] [L11598] COND TRUE m_st == 0 [L11599] int tmp_ndt_1; [L11600] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L11601] COND TRUE, EXPR \read(tmp_ndt_1) [L11603] EXPR m_st = 1 [L11604] CALL, EXPR master() [L11213] int tmp_var = __VERIFIER_nondet_int(); [L11215] COND TRUE m_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=0, token=0] [L11226] COND TRUE 1 [L11229] token = __VERIFIER_nondet_int() [L11230] local = token [L11231] E_1 = 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=0, token=0] [L11232] CALL immediate_notify() VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11848] CALL activate_threads() VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11792] int tmp ; [L11793] int tmp___0 ; [L11794] int tmp___1 ; [L11795] int tmp___2 ; [L11796] int tmp___3 ; [L11800] CALL, EXPR is_master_triggered() [L11412] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11415] COND FALSE !(m_pc == 1) VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11425] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11427] return (__retres1); [L11800] RET, EXPR is_master_triggered() [L11800] tmp = is_master_triggered() [L11802] COND FALSE !(\read(tmp)) [L11808] CALL, EXPR is_transmit1_triggered() [L11431] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11434] COND TRUE t1_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11435] COND TRUE E_1 == 1 [L11436] __retres1 = 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11446] return (__retres1); [L11808] RET, EXPR is_transmit1_triggered() [L11808] tmp___0 = is_transmit1_triggered() [L11810] COND TRUE \read(tmp___0) [L11811] t1_st = 0 [L11816] CALL, EXPR is_transmit2_triggered() [L11450] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11453] COND TRUE t2_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11454] COND FALSE !(E_2 == 1) VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11463] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11465] return (__retres1); [L11816] RET, EXPR is_transmit2_triggered() [L11816] tmp___1 = is_transmit2_triggered() [L11818] COND FALSE !(\read(tmp___1)) [L11824] CALL, EXPR is_transmit3_triggered() [L11469] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11472] COND TRUE t3_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11473] COND FALSE !(E_3 == 1) VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11482] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11484] return (__retres1); [L11824] RET, EXPR is_transmit3_triggered() [L11824] tmp___2 = is_transmit3_triggered() [L11826] COND FALSE !(\read(tmp___2)) [L11832] CALL, EXPR is_transmit4_triggered() [L11488] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11491] COND TRUE t4_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11492] COND FALSE !(E_4 == 1) VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11501] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11503] return (__retres1); [L11832] RET, EXPR is_transmit4_triggered() [L11832] tmp___3 = is_transmit4_triggered() [L11834] COND FALSE !(\read(tmp___3)) [L11848] RET activate_threads() VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11232] RET immediate_notify() VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=0, token=0] [L11233] E_1 = 2 [L11234] m_pc = 1 [L11235] m_st = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=0, token=0] [L11604] RET, EXPR master() [L11598-L11609] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=0] [L11612] COND TRUE t1_st == 0 [L11613] int tmp_ndt_2; [L11614] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L11615] COND TRUE, EXPR \read(tmp_ndt_2) [L11617] EXPR t1_st = 1 [L11618] CALL, EXPR transmit1() [L11271] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11274] COND TRUE t1_pc == 1 [L11290] token += 1 [L11291] E_2 = 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11292] CALL immediate_notify() VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11848] CALL activate_threads() VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11792] int tmp ; [L11793] int tmp___0 ; [L11794] int tmp___1 ; [L11795] int tmp___2 ; [L11796] int tmp___3 ; [L11800] CALL, EXPR is_master_triggered() [L11412] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11415] COND TRUE m_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11416] COND FALSE !(E_M == 1) VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11425] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11427] return (__retres1); [L11800] RET, EXPR is_master_triggered() [L11800] tmp = is_master_triggered() [L11802] COND FALSE !(\read(tmp)) [L11808] CALL, EXPR is_transmit1_triggered() [L11431] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11434] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11435] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11444] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11446] return (__retres1); [L11808] RET, EXPR is_transmit1_triggered() [L11808] tmp___0 = is_transmit1_triggered() [L11810] COND FALSE !(\read(tmp___0)) [L11816] CALL, EXPR is_transmit2_triggered() [L11450] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11453] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11454] COND TRUE E_2 == 1 [L11455] __retres1 = 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11465] return (__retres1); [L11816] RET, EXPR is_transmit2_triggered() [L11816] tmp___1 = is_transmit2_triggered() [L11818] COND TRUE \read(tmp___1) [L11819] t2_st = 0 [L11824] CALL, EXPR is_transmit3_triggered() [L11469] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11472] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11473] COND FALSE !(E_3 == 1) VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11482] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11484] return (__retres1); [L11824] RET, EXPR is_transmit3_triggered() [L11824] tmp___2 = is_transmit3_triggered() [L11826] COND FALSE !(\read(tmp___2)) [L11832] CALL, EXPR is_transmit4_triggered() [L11488] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11491] COND TRUE t4_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11492] COND FALSE !(E_4 == 1) VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11501] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11503] return (__retres1); [L11832] RET, EXPR is_transmit4_triggered() [L11832] tmp___3 = is_transmit4_triggered() [L11834] COND FALSE !(\read(tmp___3)) [L11848] RET activate_threads() VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11292] RET immediate_notify() VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11293] E_2 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11282] COND TRUE 1 [L11284] t1_pc = 1 [L11285] t1_st = 2 [L11618] RET, EXPR transmit1() [L11612-L11623] { int tmp_ndt_2; tmp_ndt_2 = __VERIFIER_nondet_int(); if (tmp_ndt_2) { { t1_st = 1; transmit1(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=1] [L11626] COND TRUE t2_st == 0 [L11627] int tmp_ndt_3; [L11628] EXPR tmp_ndt_3 = __VERIFIER_nondet_int() [L11629] COND TRUE, EXPR \read(tmp_ndt_3) [L11631] EXPR t2_st = 1 [L11632] CALL, EXPR transmit2() [L11307] COND FALSE !(t2_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11310] COND TRUE t2_pc == 1 [L11326] token += 1 [L11327] E_3 = 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11328] CALL immediate_notify() VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11848] CALL activate_threads() VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11792] int tmp ; [L11793] int tmp___0 ; [L11794] int tmp___1 ; [L11795] int tmp___2 ; [L11796] int tmp___3 ; [L11800] CALL, EXPR is_master_triggered() [L11412] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11415] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11416] COND FALSE !(E_M == 1) VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11425] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11427] return (__retres1); [L11800] RET, EXPR is_master_triggered() [L11800] tmp = is_master_triggered() [L11802] COND FALSE !(\read(tmp)) [L11808] CALL, EXPR is_transmit1_triggered() [L11431] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11434] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11435] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11444] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11446] return (__retres1); [L11808] RET, EXPR is_transmit1_triggered() [L11808] tmp___0 = is_transmit1_triggered() [L11810] COND FALSE !(\read(tmp___0)) [L11816] CALL, EXPR is_transmit2_triggered() [L11450] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11453] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11454] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11463] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11465] return (__retres1); [L11816] RET, EXPR is_transmit2_triggered() [L11816] tmp___1 = is_transmit2_triggered() [L11818] COND FALSE !(\read(tmp___1)) [L11824] CALL, EXPR is_transmit3_triggered() [L11469] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11472] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11473] COND TRUE E_3 == 1 [L11474] __retres1 = 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11484] return (__retres1); [L11824] RET, EXPR is_transmit3_triggered() [L11824] tmp___2 = is_transmit3_triggered() [L11826] COND TRUE \read(tmp___2) [L11827] t3_st = 0 [L11832] CALL, EXPR is_transmit4_triggered() [L11488] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11491] COND TRUE t4_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11492] COND FALSE !(E_4 == 1) VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11501] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11503] return (__retres1); [L11832] RET, EXPR is_transmit4_triggered() [L11832] tmp___3 = is_transmit4_triggered() [L11834] COND FALSE !(\read(tmp___3)) [L11848] RET activate_threads() VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11328] RET immediate_notify() VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11329] E_3 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11318] COND TRUE 1 [L11320] t2_pc = 1 [L11321] t2_st = 2 [L11632] RET, EXPR transmit2() [L11626-L11637] { int tmp_ndt_3; tmp_ndt_3 = __VERIFIER_nondet_int(); if (tmp_ndt_3) { { t2_st = 1; transmit2(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=2] [L11640] COND TRUE t3_st == 0 [L11641] int tmp_ndt_4; [L11642] EXPR tmp_ndt_4 = __VERIFIER_nondet_int() [L11643] COND TRUE, EXPR \read(tmp_ndt_4) [L11645] EXPR t3_st = 1 [L11646] CALL, EXPR transmit3() [L11343] COND FALSE !(t3_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11346] COND TRUE t3_pc == 1 [L11362] token += 1 [L11363] E_4 = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11364] CALL immediate_notify() VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11848] CALL activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11792] int tmp ; [L11793] int tmp___0 ; [L11794] int tmp___1 ; [L11795] int tmp___2 ; [L11796] int tmp___3 ; [L11800] CALL, EXPR is_master_triggered() [L11412] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11415] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11416] COND FALSE !(E_M == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11425] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11427] return (__retres1); [L11800] RET, EXPR is_master_triggered() [L11800] tmp = is_master_triggered() [L11802] COND FALSE !(\read(tmp)) [L11808] CALL, EXPR is_transmit1_triggered() [L11431] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11434] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11435] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11444] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11446] return (__retres1); [L11808] RET, EXPR is_transmit1_triggered() [L11808] tmp___0 = is_transmit1_triggered() [L11810] COND FALSE !(\read(tmp___0)) [L11816] CALL, EXPR is_transmit2_triggered() [L11450] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11453] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11454] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11463] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11465] return (__retres1); [L11816] RET, EXPR is_transmit2_triggered() [L11816] tmp___1 = is_transmit2_triggered() [L11818] COND FALSE !(\read(tmp___1)) [L11824] CALL, EXPR is_transmit3_triggered() [L11469] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11472] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11473] COND FALSE !(E_3 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11482] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11484] return (__retres1); [L11824] RET, EXPR is_transmit3_triggered() [L11824] tmp___2 = is_transmit3_triggered() [L11826] COND FALSE !(\read(tmp___2)) [L11832] CALL, EXPR is_transmit4_triggered() [L11488] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11491] COND TRUE t4_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11492] COND TRUE E_4 == 1 [L11493] __retres1 = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11503] return (__retres1); [L11832] RET, EXPR is_transmit4_triggered() [L11832] tmp___3 = is_transmit4_triggered() [L11834] COND TRUE \read(tmp___3) [L11835] t4_st = 0 [L11848] RET activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=0, token=3] [L11364] RET immediate_notify() VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=0, token=3] [L11365] E_4 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=0, token=3] [L11354] COND TRUE 1 [L11356] t3_pc = 1 [L11357] t3_st = 2 [L11646] RET, EXPR transmit3() [L11640-L11651] { int tmp_ndt_4; tmp_ndt_4 = __VERIFIER_nondet_int(); if (tmp_ndt_4) { { t3_st = 1; transmit3(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=0, tmp=1, token=3] [L11654] COND TRUE t4_st == 0 [L11655] int tmp_ndt_5; [L11656] EXPR tmp_ndt_5 = __VERIFIER_nondet_int() [L11657] COND TRUE, EXPR \read(tmp_ndt_5) [L11659] EXPR t4_st = 1 [L11660] CALL, EXPR transmit4() [L11379] COND FALSE !(t4_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=3] [L11382] COND TRUE t4_pc == 1 [L11398] token += 1 [L11399] E_M = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11400] CALL immediate_notify() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11848] CALL activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11792] int tmp ; [L11793] int tmp___0 ; [L11794] int tmp___1 ; [L11795] int tmp___2 ; [L11796] int tmp___3 ; [L11800] CALL, EXPR is_master_triggered() [L11412] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11415] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11416] COND TRUE E_M == 1 [L11417] __retres1 = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11427] return (__retres1); [L11800] RET, EXPR is_master_triggered() [L11800] tmp = is_master_triggered() [L11802] COND TRUE \read(tmp) [L11803] m_st = 0 [L11808] CALL, EXPR is_transmit1_triggered() [L11431] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11434] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11435] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11444] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11446] return (__retres1); [L11808] RET, EXPR is_transmit1_triggered() [L11808] tmp___0 = is_transmit1_triggered() [L11810] COND FALSE !(\read(tmp___0)) [L11816] CALL, EXPR is_transmit2_triggered() [L11450] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11453] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11454] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11463] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11465] return (__retres1); [L11816] RET, EXPR is_transmit2_triggered() [L11816] tmp___1 = is_transmit2_triggered() [L11818] COND FALSE !(\read(tmp___1)) [L11824] CALL, EXPR is_transmit3_triggered() [L11469] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11472] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11473] COND FALSE !(E_3 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11482] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11484] return (__retres1); [L11824] RET, EXPR is_transmit3_triggered() [L11824] tmp___2 = is_transmit3_triggered() [L11826] COND FALSE !(\read(tmp___2)) [L11832] CALL, EXPR is_transmit4_triggered() [L11488] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11491] COND TRUE t4_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11492] COND FALSE !(E_4 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11501] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11503] return (__retres1); [L11832] RET, EXPR is_transmit4_triggered() [L11832] tmp___3 = is_transmit4_triggered() [L11834] COND FALSE !(\read(tmp___3)) [L11848] RET activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11400] RET immediate_notify() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11401] E_M = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11390] COND TRUE 1 [L11392] t4_pc = 1 [L11393] t4_st = 2 [L11660] RET, EXPR transmit4() [L11654-L11665] { int tmp_ndt_5; tmp_ndt_5 = __VERIFIER_nondet_int(); if (tmp_ndt_5) { { t4_st = 1; transmit4(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=4] [L11588] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=4] [L11591] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=4] [L11548] int __retres1 ; [L11551] COND TRUE m_st == 0 [L11552] __retres1 = 1 [L11579] return (__retres1); [L11591] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=4] [L11591] tmp = exists_runnable_thread() [L11593] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=4] [L11598] COND TRUE m_st == 0 [L11599] int tmp_ndt_1; [L11600] tmp_ndt_1 = __VERIFIER_nondet_int() [L11601] COND TRUE \read(tmp_ndt_1) [L11603] m_st = 1 [L11604] CALL master() [L11213] int tmp_var = __VERIFIER_nondet_int(); [L11215] COND FALSE !(m_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=5, token=4] [L11218] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=5, token=4] [L11240] COND FALSE !(token != local + 4) [L11245] COND TRUE tmp_var <= 5 [L11246] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=5, token=4] [L11251] COND TRUE tmp_var <= 5 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=5, token=4] [L11252] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=5, token=4] [L11253] COND TRUE tmp_var == 5 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=5, token=4] [L11254] CALL error() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=4] [L11173] reach_error() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=4] - UnprovableResult [Line: 11088]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1754 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 394.8s, OverallIterations: 38, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.4s, AutomataDifference: 125.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 176298 SdHoareTripleChecker+Valid, 30.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176150 mSDsluCounter, 398329 SdHoareTripleChecker+Invalid, 26.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 276366 mSDsCounter, 5503 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49070 IncrementalHoareTripleChecker+Invalid, 54573 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5503 mSolverCounterUnsat, 121963 mSDtfsCounter, 49070 mSolverCounterSat, 1.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7741 GetRequests, 6118 SyntacticMatches, 8 SemanticMatches, 1615 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144985 ImplicationChecksByTransitivity, 106.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38617occurred in iteration=22, InterpolantAutomatonStates: 1059, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 54.1s AutomataMinimizationTime, 37 MinimizatonAttempts, 217480 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 9329 NumberOfCodeBlocks, 9329 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 9996 ConstructedInterpolants, 0 QuantifiedInterpolants, 20321 SizeOfPredicates, 58 NumberOfNonLiveVariables, 21184 ConjunctsInSsa, 307 ConjunctsInUnsatCore, 75 InterpolantComputations, 30 PerfectInterpolantSequences, 5941/6816 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 13:28:57,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898048c3-2819-4181-b54d-5b9074391823/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE