./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.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_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/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_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/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_f600a874-5167-40e7-95e2-f0571b9ba87c/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 c7c4bef8c60b810569a22d8a73144498437260dfbc0e4b7320d169bed033790e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:50:35,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:50:35,488 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:50:35,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:50:35,493 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:50:35,517 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:50:35,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:50:35,518 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:50:35,519 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:50:35,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:50:35,520 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:50:35,521 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:50:35,521 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:50:35,521 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:50:35,522 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:50:35,522 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:50:35,523 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:50:35,523 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:50:35,524 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:50:35,524 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:50:35,525 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:50:35,528 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:50:35,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:50:35,530 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:50:35,530 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:50:35,530 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:50:35,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:50:35,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:50:35,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:50:35,532 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:50:35,532 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:50:35,533 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:50:35,533 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:50:35,533 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:50:35,533 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:50:35,534 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:50:35,534 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:50:35,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:50:35,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:50:35,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:50:35,535 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:50:35,535 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:50:35,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:50:35,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:50:35,535 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:50:35,536 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:50:35,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:50:35,536 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_f600a874-5167-40e7-95e2-f0571b9ba87c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7c4bef8c60b810569a22d8a73144498437260dfbc0e4b7320d169bed033790e [2023-12-02 16:50:35,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:50:35,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:50:35,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:50:35,775 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:50:35,776 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:50:35,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c [2023-12-02 16:50:38,510 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:50:39,151 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:50:39,151 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c [2023-12-02 16:50:39,213 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/data/606b5011a/a8dfb679abe64a8ea97ec1a7083ce1b4/FLAGbb42173b7 [2023-12-02 16:50:39,228 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/data/606b5011a/a8dfb679abe64a8ea97ec1a7083ce1b4 [2023-12-02 16:50:39,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:50:39,232 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:50:39,233 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:50:39,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:50:39,238 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:50:39,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:50:39" (1/1) ... [2023-12-02 16:50:39,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7efd90bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:39, skipping insertion in model container [2023-12-02 16:50:39,240 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:50:39" (1/1) ... [2023-12-02 16:50:39,499 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:50:41,203 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_f600a874-5167-40e7-95e2-f0571b9ba87c/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c[381679,381692] [2023-12-02 16:50:41,224 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_f600a874-5167-40e7-95e2-f0571b9ba87c/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c[383339,383352] [2023-12-02 16:50:41,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:50:41,373 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:50:42,395 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_f600a874-5167-40e7-95e2-f0571b9ba87c/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c[381679,381692] [2023-12-02 16:50:42,399 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_f600a874-5167-40e7-95e2-f0571b9ba87c/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c[383339,383352] [2023-12-02 16:50:42,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:50:42,466 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:50:42,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:42 WrapperNode [2023-12-02 16:50:42,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:50:42,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:50:42,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:50:42,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:50:42,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:42" (1/1) ... [2023-12-02 16:50:42,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:42" (1/1) ... [2023-12-02 16:50:42,894 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12634 [2023-12-02 16:50:42,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:50:42,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:50:42,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:50:42,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:50:42,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:42" (1/1) ... [2023-12-02 16:50:42,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:42" (1/1) ... [2023-12-02 16:50:42,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:42" (1/1) ... [2023-12-02 16:50:42,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:42" (1/1) ... [2023-12-02 16:50:43,128 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:42" (1/1) ... [2023-12-02 16:50:43,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:42" (1/1) ... [2023-12-02 16:50:43,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:42" (1/1) ... [2023-12-02 16:50:43,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:42" (1/1) ... [2023-12-02 16:50:43,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:50:43,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:50:43,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:50:43,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:50:43,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:42" (1/1) ... [2023-12-02 16:50:43,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:50:43,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:50:43,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:50:43,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:50:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:50:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-02 16:50:43,368 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-02 16:50:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-02 16:50:43,369 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-02 16:50:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-02 16:50:43,369 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-02 16:50:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-02 16:50:43,369 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-02 16:50:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-02 16:50:43,370 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-02 16:50:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-02 16:50:43,370 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-02 16:50:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:50:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-02 16:50:43,370 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-02 16:50:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:50:43,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:50:43,474 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:50:43,476 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:50:50,869 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:50:52,410 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:50:52,410 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-02 16:50:52,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:50:52 BoogieIcfgContainer [2023-12-02 16:50:52,413 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:50:52,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:50:52,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:50:52,417 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:50:52,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:50:39" (1/3) ... [2023-12-02 16:50:52,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16bff352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:50:52, skipping insertion in model container [2023-12-02 16:50:52,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:50:42" (2/3) ... [2023-12-02 16:50:52,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16bff352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:50:52, skipping insertion in model container [2023-12-02 16:50:52,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:50:52" (3/3) ... [2023-12-02 16:50:52,420 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.02.cil-2.c [2023-12-02 16:50:52,435 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:50:52,435 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 16:50:52,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:50:52,515 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;@168b85b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:50:52,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 16:50:52,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 1730 states, 1702 states have (on average 1.9753231492361927) internal successors, (3362), 1707 states have internal predecessors, (3362), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:50:52,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 16:50:52,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:52,534 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] [2023-12-02 16:50:52,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:50:52,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:52,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1040200541, now seen corresponding path program 1 times [2023-12-02 16:50:52,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:52,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479450178] [2023-12-02 16:50:52,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:52,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:52,835 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 16:50:52,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:52,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479450178] [2023-12-02 16:50:52,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479450178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:52,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:52,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:50:52,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370473244] [2023-12-02 16:50:52,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:52,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:50:52,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:52,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:50:52,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:50:52,875 INFO L87 Difference]: Start difference. First operand has 1730 states, 1702 states have (on average 1.9753231492361927) internal successors, (3362), 1707 states have internal predecessors, (3362), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 16:50:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:53,651 INFO L93 Difference]: Finished difference Result 3523 states and 6896 transitions. [2023-12-02 16:50:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:50:53,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 38 [2023-12-02 16:50:53,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:53,678 INFO L225 Difference]: With dead ends: 3523 [2023-12-02 16:50:53,678 INFO L226 Difference]: Without dead ends: 1792 [2023-12-02 16:50:53,686 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 16:50:53,690 INFO L413 NwaCegarLoop]: 3224 mSDtfsCounter, 3463 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3463 SdHoareTripleChecker+Valid, 6388 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:53,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3463 Valid, 6388 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:50:53,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2023-12-02 16:50:53,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1791. [2023-12-02 16:50:53,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1747 states have (on average 1.953062392673154) internal successors, (3412), 1751 states have internal predecessors, (3412), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 16:50:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 3470 transitions. [2023-12-02 16:50:53,821 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 3470 transitions. Word has length 38 [2023-12-02 16:50:53,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:53,822 INFO L495 AbstractCegarLoop]: Abstraction has 1791 states and 3470 transitions. [2023-12-02 16:50:53,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 16:50:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 3470 transitions. [2023-12-02 16:50:53,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 16:50:53,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:53,827 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 16:50:53,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:50:53,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:50:53,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:53,829 INFO L85 PathProgramCache]: Analyzing trace with hash 522561233, now seen corresponding path program 1 times [2023-12-02 16:50:53,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:53,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421773988] [2023-12-02 16:50:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:53,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 16:50:53,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:53,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421773988] [2023-12-02 16:50:53,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421773988] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:50:53,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806381725] [2023-12-02 16:50:53,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:53,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:50:53,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:50:53,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:50:53,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:50:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:54,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:50:54,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:50:54,159 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 16:50:54,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:50:54,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806381725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:54,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:50:54,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-02 16:50:54,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497711286] [2023-12-02 16:50:54,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:54,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:50:54,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:54,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:50:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:50:54,163 INFO L87 Difference]: Start difference. First operand 1791 states and 3470 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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 16:50:54,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:54,600 INFO L93 Difference]: Finished difference Result 2074 states and 3857 transitions. [2023-12-02 16:50:54,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:50:54,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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 68 [2023-12-02 16:50:54,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:54,616 INFO L225 Difference]: With dead ends: 2074 [2023-12-02 16:50:54,616 INFO L226 Difference]: Without dead ends: 1929 [2023-12-02 16:50:54,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 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 16:50:54,619 INFO L413 NwaCegarLoop]: 3189 mSDtfsCounter, 3359 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:54,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3359 Valid, 3274 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:50:54,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2023-12-02 16:50:54,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1923. [2023-12-02 16:50:54,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1845 states have (on average 1.9192411924119241) internal successors, (3541), 1850 states have internal predecessors, (3541), 52 states have call successors, (52), 25 states have call predecessors, (52), 24 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 16:50:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 3643 transitions. [2023-12-02 16:50:54,693 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 3643 transitions. Word has length 68 [2023-12-02 16:50:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:54,694 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 3643 transitions. [2023-12-02 16:50:54,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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 16:50:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 3643 transitions. [2023-12-02 16:50:54,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 16:50:54,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:54,699 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 16:50:54,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:50:54,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:50:54,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:50:54,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:54,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1126292337, now seen corresponding path program 1 times [2023-12-02 16:50:54,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:54,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469058466] [2023-12-02 16:50:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:54,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-02 16:50:55,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:55,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469058466] [2023-12-02 16:50:55,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469058466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:55,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:55,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:50:55,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226688881] [2023-12-02 16:50:55,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:55,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:50:55,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:55,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:50:55,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:50:55,330 INFO L87 Difference]: Start difference. First operand 1923 states and 3643 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-02 16:50:56,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:56,301 INFO L93 Difference]: Finished difference Result 2485 states and 4385 transitions. [2023-12-02 16:50:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 16:50:56,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 68 [2023-12-02 16:50:56,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:56,317 INFO L225 Difference]: With dead ends: 2485 [2023-12-02 16:50:56,317 INFO L226 Difference]: Without dead ends: 2209 [2023-12-02 16:50:56,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 16:50:56,321 INFO L413 NwaCegarLoop]: 3159 mSDtfsCounter, 3513 mSDsluCounter, 9369 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3524 SdHoareTripleChecker+Valid, 12528 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:56,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3524 Valid, 12528 Invalid, 1111 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:50:56,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2023-12-02 16:50:56,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 2171. [2023-12-02 16:50:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2171 states, 2027 states have (on average 1.8623581647755303) internal successors, (3775), 2034 states have internal predecessors, (3775), 94 states have call successors, (94), 49 states have call predecessors, (94), 48 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-02 16:50:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 3961 transitions. [2023-12-02 16:50:56,416 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 3961 transitions. Word has length 68 [2023-12-02 16:50:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:56,417 INFO L495 AbstractCegarLoop]: Abstraction has 2171 states and 3961 transitions. [2023-12-02 16:50:56,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-02 16:50:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 3961 transitions. [2023-12-02 16:50:56,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 16:50:56,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:56,422 INFO L195 NwaCegarLoop]: trace histogram [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 16:50:56,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:50:56,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:50:56,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash -370791028, now seen corresponding path program 1 times [2023-12-02 16:50:56,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:56,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130320179] [2023-12-02 16:50:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:56,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-02 16:50:56,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:56,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130320179] [2023-12-02 16:50:56,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130320179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:56,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:56,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:50:56,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432489594] [2023-12-02 16:50:56,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:56,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:50:56,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:56,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:50:56,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:50:56,503 INFO L87 Difference]: Start difference. First operand 2171 states and 3961 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 16:50:56,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:56,987 INFO L93 Difference]: Finished difference Result 2584 states and 4508 transitions. [2023-12-02 16:50:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:50:56,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 70 [2023-12-02 16:50:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:57,004 INFO L225 Difference]: With dead ends: 2584 [2023-12-02 16:50:57,004 INFO L226 Difference]: Without dead ends: 2304 [2023-12-02 16:50:57,006 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 16:50:57,007 INFO L413 NwaCegarLoop]: 3192 mSDtfsCounter, 37 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 6343 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:57,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 6343 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:50:57,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2023-12-02 16:50:57,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 2241. [2023-12-02 16:50:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 2089 states have (on average 1.8492101483963619) internal successors, (3863), 2096 states have internal predecessors, (3863), 98 states have call successors, (98), 53 states have call predecessors, (98), 52 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-02 16:50:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 4057 transitions. [2023-12-02 16:50:57,101 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 4057 transitions. Word has length 70 [2023-12-02 16:50:57,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:57,102 INFO L495 AbstractCegarLoop]: Abstraction has 2241 states and 4057 transitions. [2023-12-02 16:50:57,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 16:50:57,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 4057 transitions. [2023-12-02 16:50:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 16:50:57,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:57,105 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 16:50:57,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 16:50:57,106 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:50:57,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:57,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2094077431, now seen corresponding path program 1 times [2023-12-02 16:50:57,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:57,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389527690] [2023-12-02 16:50:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:57,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 16:50:57,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:57,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389527690] [2023-12-02 16:50:57,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389527690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:57,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:50:57,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:50:57,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777943109] [2023-12-02 16:50:57,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:57,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:50:57,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:57,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:50:57,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:50:57,178 INFO L87 Difference]: Start difference. First operand 2241 states and 4057 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, (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 16:50:57,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:57,593 INFO L93 Difference]: Finished difference Result 3133 states and 5240 transitions. [2023-12-02 16:50:57,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:50:57,593 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, (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 89 [2023-12-02 16:50:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:57,610 INFO L225 Difference]: With dead ends: 3133 [2023-12-02 16:50:57,610 INFO L226 Difference]: Without dead ends: 2538 [2023-12-02 16:50:57,613 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 16:50:57,614 INFO L413 NwaCegarLoop]: 3190 mSDtfsCounter, 3351 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3351 SdHoareTripleChecker+Valid, 3275 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:57,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3351 Valid, 3275 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:50:57,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2023-12-02 16:50:57,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2528. [2023-12-02 16:50:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2306 states have (on average 1.794882914137034) internal successors, (4139), 2315 states have internal predecessors, (4139), 142 states have call successors, (142), 79 states have call predecessors, (142), 78 states have return successors, (140), 134 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-02 16:50:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4421 transitions. [2023-12-02 16:50:57,721 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4421 transitions. Word has length 89 [2023-12-02 16:50:57,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:57,721 INFO L495 AbstractCegarLoop]: Abstraction has 2528 states and 4421 transitions. [2023-12-02 16:50:57,722 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, (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 16:50:57,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4421 transitions. [2023-12-02 16:50:57,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 16:50:57,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:57,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:57,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 16:50:57,727 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:50:57,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash 843494348, now seen corresponding path program 1 times [2023-12-02 16:50:57,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:57,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197470188] [2023-12-02 16:50:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:57,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 16:50:57,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:57,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197470188] [2023-12-02 16:50:57,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197470188] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:50:57,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344439880] [2023-12-02 16:50:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:57,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:50:57,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:50:57,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:50:57,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:50:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:57,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:50:57,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:50:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 16:50:57,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:50:57,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344439880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:57,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:50:57,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 16:50:57,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538672475] [2023-12-02 16:50:57,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:57,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:50:57,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:57,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:50:57,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:50:57,997 INFO L87 Difference]: Start difference. First operand 2528 states and 4421 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 16:50:58,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:58,578 INFO L93 Difference]: Finished difference Result 3313 states and 5463 transitions. [2023-12-02 16:50:58,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:50:58,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 102 [2023-12-02 16:50:58,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:58,596 INFO L225 Difference]: With dead ends: 3313 [2023-12-02 16:50:58,597 INFO L226 Difference]: Without dead ends: 2719 [2023-12-02 16:50:58,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 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 16:50:58,601 INFO L413 NwaCegarLoop]: 3188 mSDtfsCounter, 54 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 6340 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:58,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 6340 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:50:58,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2023-12-02 16:50:58,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2617. [2023-12-02 16:50:58,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2617 states, 2383 states have (on average 1.7838858581619808) internal successors, (4251), 2392 states have internal predecessors, (4251), 148 states have call successors, (148), 85 states have call predecessors, (148), 84 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-02 16:50:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 4545 transitions. [2023-12-02 16:50:58,740 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 4545 transitions. Word has length 102 [2023-12-02 16:50:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:58,741 INFO L495 AbstractCegarLoop]: Abstraction has 2617 states and 4545 transitions. [2023-12-02 16:50:58,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 16:50:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 4545 transitions. [2023-12-02 16:50:58,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 16:50:58,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:58,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:58,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 16:50:58,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 16:50:58,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:50:58,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:58,948 INFO L85 PathProgramCache]: Analyzing trace with hash -265913120, now seen corresponding path program 2 times [2023-12-02 16:50:58,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:50:58,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595247121] [2023-12-02 16:50:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:58,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:50:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:50:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 16:50:59,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:50:59,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595247121] [2023-12-02 16:50:59,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595247121] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:50:59,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973349869] [2023-12-02 16:50:59,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:50:59,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:50:59,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:50:59,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:50:59,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 16:50:59,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 16:50:59,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:50:59,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:50:59,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:50:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 16:50:59,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:50:59,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973349869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:50:59,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:50:59,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 16:50:59,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381572780] [2023-12-02 16:50:59,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:50:59,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:50:59,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:50:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:50:59,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:50:59,376 INFO L87 Difference]: Start difference. First operand 2617 states and 4545 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (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 16:50:59,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:59,892 INFO L93 Difference]: Finished difference Result 3308 states and 5495 transitions. [2023-12-02 16:50:59,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:50:59,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (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 102 [2023-12-02 16:50:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:59,906 INFO L225 Difference]: With dead ends: 3308 [2023-12-02 16:50:59,906 INFO L226 Difference]: Without dead ends: 2625 [2023-12-02 16:50:59,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 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 16:50:59,909 INFO L413 NwaCegarLoop]: 3190 mSDtfsCounter, 95 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 6332 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:59,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 6332 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:50:59,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2023-12-02 16:50:59,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2613. [2023-12-02 16:50:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2379 states have (on average 1.776796973518285) internal successors, (4227), 2388 states have internal predecessors, (4227), 148 states have call successors, (148), 85 states have call predecessors, (148), 84 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-02 16:50:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 4521 transitions. [2023-12-02 16:50:59,990 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 4521 transitions. Word has length 102 [2023-12-02 16:50:59,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:59,990 INFO L495 AbstractCegarLoop]: Abstraction has 2613 states and 4521 transitions. [2023-12-02 16:50:59,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (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 16:50:59,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 4521 transitions. [2023-12-02 16:50:59,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 16:50:59,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:59,993 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2023-12-02 16:50:59,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 16:51:00,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:00,194 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:00,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:00,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1957434978, now seen corresponding path program 1 times [2023-12-02 16:51:00,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:00,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823203635] [2023-12-02 16:51:00,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:00,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 16:51:00,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:00,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823203635] [2023-12-02 16:51:00,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823203635] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:51:00,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935514653] [2023-12-02 16:51:00,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:00,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:00,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:00,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:51:00,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 16:51:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:00,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:51:00,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:00,573 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 16:51:00,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:51:00,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935514653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:00,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:51:00,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 16:51:00,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584398449] [2023-12-02 16:51:00,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:00,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:51:00,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:00,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:51:00,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:51:00,575 INFO L87 Difference]: Start difference. First operand 2613 states and 4521 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 16:51:00,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:00,962 INFO L93 Difference]: Finished difference Result 3437 states and 5580 transitions. [2023-12-02 16:51:00,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:51:00,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 102 [2023-12-02 16:51:00,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:00,978 INFO L225 Difference]: With dead ends: 3437 [2023-12-02 16:51:00,978 INFO L226 Difference]: Without dead ends: 2789 [2023-12-02 16:51:00,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 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 16:51:00,982 INFO L413 NwaCegarLoop]: 3159 mSDtfsCounter, 3361 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3361 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:00,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3361 Valid, 3178 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:51:00,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2023-12-02 16:51:01,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2789. [2023-12-02 16:51:01,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2527 states have (on average 1.738425009893154) internal successors, (4393), 2536 states have internal predecessors, (4393), 156 states have call successors, (156), 105 states have call predecessors, (156), 104 states have return successors, (154), 148 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-02 16:51:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 4703 transitions. [2023-12-02 16:51:01,090 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 4703 transitions. Word has length 102 [2023-12-02 16:51:01,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:01,091 INFO L495 AbstractCegarLoop]: Abstraction has 2789 states and 4703 transitions. [2023-12-02 16:51:01,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 16:51:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 4703 transitions. [2023-12-02 16:51:01,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-02 16:51:01,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:01,095 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2023-12-02 16:51:01,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 16:51:01,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:01,300 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:01,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:01,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1628644149, now seen corresponding path program 1 times [2023-12-02 16:51:01,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:01,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332585707] [2023-12-02 16:51:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:01,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 16:51:01,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:01,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332585707] [2023-12-02 16:51:01,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332585707] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:51:01,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897453776] [2023-12-02 16:51:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:01,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:01,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:01,452 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:51:01,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 16:51:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:01,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:51:01,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 16:51:01,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:51:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897453776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:01,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:51:01,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 16:51:01,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770034850] [2023-12-02 16:51:01,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:01,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:51:01,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:01,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:51:01,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:51:01,610 INFO L87 Difference]: Start difference. First operand 2789 states and 4703 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 16:51:02,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:02,030 INFO L93 Difference]: Finished difference Result 4363 states and 6696 transitions. [2023-12-02 16:51:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:51:02,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 103 [2023-12-02 16:51:02,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:02,049 INFO L225 Difference]: With dead ends: 4363 [2023-12-02 16:51:02,049 INFO L226 Difference]: Without dead ends: 3221 [2023-12-02 16:51:02,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 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 16:51:02,053 INFO L413 NwaCegarLoop]: 3165 mSDtfsCounter, 50 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 6298 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:02,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 6298 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:51:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2023-12-02 16:51:02,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 2919. [2023-12-02 16:51:02,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2919 states, 2637 states have (on average 1.7235494880546076) internal successors, (4545), 2647 states have internal predecessors, (4545), 166 states have call successors, (166), 115 states have call predecessors, (166), 114 states have return successors, (164), 157 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-02 16:51:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2919 states to 2919 states and 4875 transitions. [2023-12-02 16:51:02,179 INFO L78 Accepts]: Start accepts. Automaton has 2919 states and 4875 transitions. Word has length 103 [2023-12-02 16:51:02,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:02,179 INFO L495 AbstractCegarLoop]: Abstraction has 2919 states and 4875 transitions. [2023-12-02 16:51:02,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 16:51:02,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2919 states and 4875 transitions. [2023-12-02 16:51:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 16:51:02,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:02,185 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2023-12-02 16:51:02,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 16:51:02,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 16:51:02,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:02,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:02,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1656835116, now seen corresponding path program 1 times [2023-12-02 16:51:02,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:02,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484965441] [2023-12-02 16:51:02,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:02,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 16:51:02,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:02,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484965441] [2023-12-02 16:51:02,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484965441] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:51:02,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482103641] [2023-12-02 16:51:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:02,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:02,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:02,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:51:02,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 16:51:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:02,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 16:51:02,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 16:51:02,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:51:02,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482103641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:02,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:51:02,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2023-12-02 16:51:02,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9252860] [2023-12-02 16:51:02,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:02,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:51:02,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:02,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:51:02,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:51:02,774 INFO L87 Difference]: Start difference. First operand 2919 states and 4875 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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 16:51:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:03,518 INFO L93 Difference]: Finished difference Result 4763 states and 7175 transitions. [2023-12-02 16:51:03,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:51:03,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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 105 [2023-12-02 16:51:03,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:03,536 INFO L225 Difference]: With dead ends: 4763 [2023-12-02 16:51:03,536 INFO L226 Difference]: Without dead ends: 3491 [2023-12-02 16:51:03,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 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 16:51:03,541 INFO L413 NwaCegarLoop]: 3155 mSDtfsCounter, 6817 mSDsluCounter, 6218 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6828 SdHoareTripleChecker+Valid, 9373 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:03,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6828 Valid, 9373 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:51:03,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2023-12-02 16:51:03,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 3487. [2023-12-02 16:51:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3487 states, 3077 states have (on average 1.6460838479038025) internal successors, (5065), 3090 states have internal predecessors, (5065), 240 states have call successors, (240), 169 states have call predecessors, (240), 168 states have return successors, (238), 228 states have call predecessors, (238), 238 states have call successors, (238) [2023-12-02 16:51:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3487 states to 3487 states and 5543 transitions. [2023-12-02 16:51:03,706 INFO L78 Accepts]: Start accepts. Automaton has 3487 states and 5543 transitions. Word has length 105 [2023-12-02 16:51:03,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:03,706 INFO L495 AbstractCegarLoop]: Abstraction has 3487 states and 5543 transitions. [2023-12-02 16:51:03,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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 16:51:03,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3487 states and 5543 transitions. [2023-12-02 16:51:03,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-02 16:51:03,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:03,712 INFO L195 NwaCegarLoop]: trace histogram [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 16:51:03,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 16:51:03,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 16:51:03,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:03,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:03,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1759222304, now seen corresponding path program 1 times [2023-12-02 16:51:03,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:03,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582832575] [2023-12-02 16:51:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:03,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-02 16:51:04,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:04,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582832575] [2023-12-02 16:51:04,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582832575] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:51:04,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855245371] [2023-12-02 16:51:04,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:04,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:04,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:04,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:51:04,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 16:51:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:04,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:51:04,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 16:51:04,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:51:04,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855245371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:04,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:51:04,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 16:51:04,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765065847] [2023-12-02 16:51:04,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:04,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:51:04,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:04,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:51:04,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:51:04,164 INFO L87 Difference]: Start difference. First operand 3487 states and 5543 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 16:51:04,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:04,691 INFO L93 Difference]: Finished difference Result 5154 states and 7638 transitions. [2023-12-02 16:51:04,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:51:04,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 106 [2023-12-02 16:51:04,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:04,705 INFO L225 Difference]: With dead ends: 5154 [2023-12-02 16:51:04,705 INFO L226 Difference]: Without dead ends: 3926 [2023-12-02 16:51:04,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 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 16:51:04,710 INFO L413 NwaCegarLoop]: 3198 mSDtfsCounter, 57 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6350 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:04,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6350 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:51:04,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3926 states. [2023-12-02 16:51:04,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 3675. [2023-12-02 16:51:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 3233 states have (on average 1.6285184039591711) internal successors, (5265), 3246 states have internal predecessors, (5265), 256 states have call successors, (256), 185 states have call predecessors, (256), 184 states have return successors, (254), 244 states have call predecessors, (254), 254 states have call successors, (254) [2023-12-02 16:51:04,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 5775 transitions. [2023-12-02 16:51:04,917 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 5775 transitions. Word has length 106 [2023-12-02 16:51:04,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:04,917 INFO L495 AbstractCegarLoop]: Abstraction has 3675 states and 5775 transitions. [2023-12-02 16:51:04,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 16:51:04,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 5775 transitions. [2023-12-02 16:51:04,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 16:51:04,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:04,922 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:51:04,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 16:51:05,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 16:51:05,123 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:05,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:05,123 INFO L85 PathProgramCache]: Analyzing trace with hash -867995985, now seen corresponding path program 1 times [2023-12-02 16:51:05,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:05,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965232197] [2023-12-02 16:51:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:05,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 16:51:05,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:05,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965232197] [2023-12-02 16:51:05,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965232197] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:51:05,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062031452] [2023-12-02 16:51:05,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:05,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:05,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:05,271 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:51:05,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 16:51:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:05,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:51:05,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-02 16:51:05,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:51:05,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062031452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:05,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:51:05,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2023-12-02 16:51:05,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071221762] [2023-12-02 16:51:05,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:05,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:51:05,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:05,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:51:05,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:51:05,434 INFO L87 Difference]: Start difference. First operand 3675 states and 5775 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 16:51:05,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:05,972 INFO L93 Difference]: Finished difference Result 4542 states and 6845 transitions. [2023-12-02 16:51:05,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:51:05,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 109 [2023-12-02 16:51:05,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:05,980 INFO L225 Difference]: With dead ends: 4542 [2023-12-02 16:51:05,980 INFO L226 Difference]: Without dead ends: 3808 [2023-12-02 16:51:05,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:51:05,982 INFO L413 NwaCegarLoop]: 3201 mSDtfsCounter, 3355 mSDsluCounter, 3288 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3355 SdHoareTripleChecker+Valid, 6489 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:05,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3355 Valid, 6489 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:51:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2023-12-02 16:51:06,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3756. [2023-12-02 16:51:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 3291 states have (on average 1.620480097234883) internal successors, (5333), 3310 states have internal predecessors, (5333), 263 states have call successors, (263), 189 states have call predecessors, (263), 200 states have return successors, (273), 257 states have call predecessors, (273), 261 states have call successors, (273) [2023-12-02 16:51:06,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 5869 transitions. [2023-12-02 16:51:06,095 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 5869 transitions. Word has length 109 [2023-12-02 16:51:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:06,096 INFO L495 AbstractCegarLoop]: Abstraction has 3756 states and 5869 transitions. [2023-12-02 16:51:06,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 16:51:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 5869 transitions. [2023-12-02 16:51:06,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 16:51:06,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:06,102 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 16:51:06,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 16:51:06,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 16:51:06,302 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:06,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:06,303 INFO L85 PathProgramCache]: Analyzing trace with hash -953820918, now seen corresponding path program 1 times [2023-12-02 16:51:06,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:06,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114181843] [2023-12-02 16:51:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:06,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 16:51:06,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:06,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114181843] [2023-12-02 16:51:06,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114181843] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:51:06,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941065948] [2023-12-02 16:51:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:06,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:06,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:06,352 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:51:06,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 16:51:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:06,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:51:06,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:06,487 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:51:06,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:51:06,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941065948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:06,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:51:06,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-12-02 16:51:06,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818328260] [2023-12-02 16:51:06,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:06,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:51:06,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:06,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:51:06,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:51:06,490 INFO L87 Difference]: Start difference. First operand 3756 states and 5869 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 16:51:06,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:06,984 INFO L93 Difference]: Finished difference Result 4498 states and 6813 transitions. [2023-12-02 16:51:06,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:51:06,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 110 [2023-12-02 16:51:06,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:06,992 INFO L225 Difference]: With dead ends: 4498 [2023-12-02 16:51:06,992 INFO L226 Difference]: Without dead ends: 3689 [2023-12-02 16:51:06,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 111 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 16:51:06,996 INFO L413 NwaCegarLoop]: 3161 mSDtfsCounter, 16 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 6308 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:06,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 6308 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:51:07,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2023-12-02 16:51:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3565. [2023-12-02 16:51:07,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3565 states, 3136 states have (on average 1.637436224489796) internal successors, (5135), 3146 states have internal predecessors, (5135), 251 states have call successors, (251), 177 states have call predecessors, (251), 176 states have return successors, (249), 242 states have call predecessors, (249), 249 states have call successors, (249) [2023-12-02 16:51:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 5635 transitions. [2023-12-02 16:51:07,124 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 5635 transitions. Word has length 110 [2023-12-02 16:51:07,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:07,124 INFO L495 AbstractCegarLoop]: Abstraction has 3565 states and 5635 transitions. [2023-12-02 16:51:07,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 16:51:07,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 5635 transitions. [2023-12-02 16:51:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-02 16:51:07,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:07,130 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2023-12-02 16:51:07,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 16:51:07,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 16:51:07,331 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:07,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:07,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1520879221, now seen corresponding path program 1 times [2023-12-02 16:51:07,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:07,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523122832] [2023-12-02 16:51:07,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:07,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 11 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 16:51:07,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:07,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523122832] [2023-12-02 16:51:07,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523122832] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:51:07,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707881631] [2023-12-02 16:51:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:07,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:07,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:07,465 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:51:07,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 16:51:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:07,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:51:07,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 16:51:07,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:51:07,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707881631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:07,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:51:07,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-12-02 16:51:07,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908430976] [2023-12-02 16:51:07,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:07,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:51:07,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:07,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:51:07,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:51:07,711 INFO L87 Difference]: Start difference. First operand 3565 states and 5635 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 16:51:08,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:08,152 INFO L93 Difference]: Finished difference Result 5163 states and 7636 transitions. [2023-12-02 16:51:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:51:08,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 111 [2023-12-02 16:51:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:08,162 INFO L225 Difference]: With dead ends: 5163 [2023-12-02 16:51:08,162 INFO L226 Difference]: Without dead ends: 3845 [2023-12-02 16:51:08,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 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 16:51:08,167 INFO L413 NwaCegarLoop]: 3167 mSDtfsCounter, 3338 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3338 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:08,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3338 Valid, 3193 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:51:08,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2023-12-02 16:51:08,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 3813. [2023-12-02 16:51:08,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3813 states, 3361 states have (on average 1.5986313597143706) internal successors, (5373), 3371 states have internal predecessors, (5373), 253 states have call successors, (253), 198 states have call predecessors, (253), 197 states have return successors, (269), 244 states have call predecessors, (269), 251 states have call successors, (269) [2023-12-02 16:51:08,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3813 states to 3813 states and 5895 transitions. [2023-12-02 16:51:08,341 INFO L78 Accepts]: Start accepts. Automaton has 3813 states and 5895 transitions. Word has length 111 [2023-12-02 16:51:08,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:08,341 INFO L495 AbstractCegarLoop]: Abstraction has 3813 states and 5895 transitions. [2023-12-02 16:51:08,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 16:51:08,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3813 states and 5895 transitions. [2023-12-02 16:51:08,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 16:51:08,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:08,347 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 16:51:08,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 16:51:08,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 16:51:08,548 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:08,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:08,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1949242114, now seen corresponding path program 1 times [2023-12-02 16:51:08,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:08,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451964402] [2023-12-02 16:51:08,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:08,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 31 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 16:51:08,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:08,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451964402] [2023-12-02 16:51:08,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451964402] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:51:08,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669037224] [2023-12-02 16:51:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:08,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:08,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:08,605 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:51:08,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 16:51:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:08,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:51:08,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 16:51:08,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:51:08,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669037224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:08,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:51:08,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-12-02 16:51:08,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803044292] [2023-12-02 16:51:08,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:08,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:51:08,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:08,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:51:08,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:51:08,759 INFO L87 Difference]: Start difference. First operand 3813 states and 5895 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 16:51:09,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:09,212 INFO L93 Difference]: Finished difference Result 5293 states and 7769 transitions. [2023-12-02 16:51:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:51:09,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 108 [2023-12-02 16:51:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:09,223 INFO L225 Difference]: With dead ends: 5293 [2023-12-02 16:51:09,223 INFO L226 Difference]: Without dead ends: 3811 [2023-12-02 16:51:09,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 109 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 16:51:09,227 INFO L413 NwaCegarLoop]: 3221 mSDtfsCounter, 81 mSDsluCounter, 3141 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 6362 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:09,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 6362 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:51:09,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3811 states. [2023-12-02 16:51:09,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3811 to 3781. [2023-12-02 16:51:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 3329 states have (on average 1.585160708921598) internal successors, (5277), 3339 states have internal predecessors, (5277), 253 states have call successors, (253), 198 states have call predecessors, (253), 197 states have return successors, (269), 244 states have call predecessors, (269), 251 states have call successors, (269) [2023-12-02 16:51:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5799 transitions. [2023-12-02 16:51:09,406 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5799 transitions. Word has length 108 [2023-12-02 16:51:09,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:09,407 INFO L495 AbstractCegarLoop]: Abstraction has 3781 states and 5799 transitions. [2023-12-02 16:51:09,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 16:51:09,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5799 transitions. [2023-12-02 16:51:09,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-02 16:51:09,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:09,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:09,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 16:51:09,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 16:51:09,613 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:09,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:09,614 INFO L85 PathProgramCache]: Analyzing trace with hash 447646267, now seen corresponding path program 1 times [2023-12-02 16:51:09,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:09,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866158149] [2023-12-02 16:51:09,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:09,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 16:51:10,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:10,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866158149] [2023-12-02 16:51:10,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866158149] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:51:10,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114364699] [2023-12-02 16:51:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:10,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:10,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:10,116 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:51:10,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 16:51:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:10,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 16:51:10,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:51:10,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:51:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-02 16:51:10,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114364699] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:51:10,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [559291763] [2023-12-02 16:51:10,665 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2023-12-02 16:51:10,666 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:51:10,668 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:51:10,673 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:51:10,673 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:51:17,486 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 82 for LOIs [2023-12-02 16:51:17,498 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 63 for LOIs [2023-12-02 16:51:17,523 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 133 for LOIs [2023-12-02 16:51:17,637 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 63 for LOIs [2023-12-02 16:51:17,643 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 63 for LOIs [2023-12-02 16:51:17,665 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 87 for LOIs [2023-12-02 16:51:17,812 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 63 for LOIs [2023-12-02 16:51:18,543 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:51:29,553 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '121093#(and (= ~a15~0 1) (= 5 ~a20~0) (<= 1 |#StackHeapBarrier|) (<= ~local~0 2147483647) (= ~t1_pc~0 0) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ 2 ~local~0))) (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)))) (<= 0 (+ ~local~0 2147483648)) (= ~a~0 1) (= ~d~0 4) (= ~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) (exists ((|v_ULTIMATE.start_eval_~tmp~0#1_BEFORE_CALL_9| Int)) (and (<= 0 |v_ULTIMATE.start_eval_~tmp~0#1_BEFORE_CALL_9|) (not (= |v_ULTIMATE.start_eval_~tmp~0#1_BEFORE_CALL_9| 0)) (<= |v_ULTIMATE.start_eval_~tmp~0#1_BEFORE_CALL_9| 1))) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (<= ~token~0 2147483647) (= ~a27~0 1) (<= 0 (+ ~token~0 2147483648)) (= ~a2~0 10))' at error location [2023-12-02 16:51:29,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:51:29,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:51:29,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 6] total 21 [2023-12-02 16:51:29,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707087592] [2023-12-02 16:51:29,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:51:29,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 16:51:29,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:29,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 16:51:29,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=4373, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 16:51:29,557 INFO L87 Difference]: Start difference. First operand 3781 states and 5799 transitions. Second operand has 21 states, 17 states have (on average 8.294117647058824) internal successors, (141), 19 states have internal predecessors, (141), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2023-12-02 16:51:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:33,001 INFO L93 Difference]: Finished difference Result 6169 states and 8734 transitions. [2023-12-02 16:51:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-02 16:51:33,001 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 8.294117647058824) internal successors, (141), 19 states have internal predecessors, (141), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 113 [2023-12-02 16:51:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:33,010 INFO L225 Difference]: With dead ends: 6169 [2023-12-02 16:51:33,010 INFO L226 Difference]: Without dead ends: 4027 [2023-12-02 16:51:33,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 318 SyntacticMatches, 7 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9163 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1565, Invalid=20191, Unknown=0, NotChecked=0, Total=21756 [2023-12-02 16:51:33,021 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 17726 mSDsluCounter, 36158 mSDsCounter, 0 mSdLazyCounter, 4506 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17732 SdHoareTripleChecker+Valid, 39492 SdHoareTripleChecker+Invalid, 4898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 4506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:33,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17732 Valid, 39492 Invalid, 4898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [392 Valid, 4506 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 16:51:33,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4027 states. [2023-12-02 16:51:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4027 to 3223. [2023-12-02 16:51:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 2913 states have (on average 1.6405767250257466) internal successors, (4779), 2919 states have internal predecessors, (4779), 165 states have call successors, (165), 144 states have call predecessors, (165), 143 states have return successors, (173), 159 states have call predecessors, (173), 163 states have call successors, (173) [2023-12-02 16:51:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 5117 transitions. [2023-12-02 16:51:33,140 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 5117 transitions. Word has length 113 [2023-12-02 16:51:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:33,140 INFO L495 AbstractCegarLoop]: Abstraction has 3223 states and 5117 transitions. [2023-12-02 16:51:33,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 8.294117647058824) internal successors, (141), 19 states have internal predecessors, (141), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2023-12-02 16:51:33,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 5117 transitions. [2023-12-02 16:51:33,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 16:51:33,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:33,144 INFO L195 NwaCegarLoop]: trace histogram [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 16:51:33,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 16:51:33,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:33,344 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:33,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:33,345 INFO L85 PathProgramCache]: Analyzing trace with hash -826498530, now seen corresponding path program 1 times [2023-12-02 16:51:33,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:33,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221199162] [2023-12-02 16:51:33,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:33,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 36 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-02 16:51:33,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:33,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221199162] [2023-12-02 16:51:33,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221199162] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:51:33,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937704527] [2023-12-02 16:51:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:33,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:33,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:33,447 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:51:33,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 16:51:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:33,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:51:33,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:33,651 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 16:51:33,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:51:33,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937704527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:33,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:51:33,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2023-12-02 16:51:33,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711599762] [2023-12-02 16:51:33,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:33,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:51:33,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:33,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:51:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:51:33,653 INFO L87 Difference]: Start difference. First operand 3223 states and 5117 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 16:51:34,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:34,151 INFO L93 Difference]: Finished difference Result 4492 states and 6621 transitions. [2023-12-02 16:51:34,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:51:34,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 109 [2023-12-02 16:51:34,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:34,157 INFO L225 Difference]: With dead ends: 4492 [2023-12-02 16:51:34,157 INFO L226 Difference]: Without dead ends: 3703 [2023-12-02 16:51:34,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 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 16:51:34,160 INFO L413 NwaCegarLoop]: 3210 mSDtfsCounter, 3391 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3391 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:34,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3391 Valid, 3313 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:51:34,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2023-12-02 16:51:34,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3436. [2023-12-02 16:51:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3436 states, 3097 states have (on average 1.6051017113335486) internal successors, (4971), 3106 states have internal predecessors, (4971), 175 states have call successors, (175), 162 states have call predecessors, (175), 162 states have return successors, (187), 167 states have call predecessors, (187), 173 states have call successors, (187) [2023-12-02 16:51:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3436 states to 3436 states and 5333 transitions. [2023-12-02 16:51:34,315 INFO L78 Accepts]: Start accepts. Automaton has 3436 states and 5333 transitions. Word has length 109 [2023-12-02 16:51:34,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:34,316 INFO L495 AbstractCegarLoop]: Abstraction has 3436 states and 5333 transitions. [2023-12-02 16:51:34,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 16:51:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states and 5333 transitions. [2023-12-02 16:51:34,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 16:51:34,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:34,319 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, 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 16:51:34,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 16:51:34,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:34,520 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:34,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:34,521 INFO L85 PathProgramCache]: Analyzing trace with hash 52370494, now seen corresponding path program 1 times [2023-12-02 16:51:34,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:34,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47943390] [2023-12-02 16:51:34,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:34,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 16:51:34,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:34,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47943390] [2023-12-02 16:51:34,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47943390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:34,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:51:34,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:51:34,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438031314] [2023-12-02 16:51:34,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:34,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:51:34,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:34,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:51:34,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:51:34,698 INFO L87 Difference]: Start difference. First operand 3436 states and 5333 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 16:51:35,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:35,551 INFO L93 Difference]: Finished difference Result 4883 states and 7015 transitions. [2023-12-02 16:51:35,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:51:35,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 110 [2023-12-02 16:51:35,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:35,557 INFO L225 Difference]: With dead ends: 4883 [2023-12-02 16:51:35,557 INFO L226 Difference]: Without dead ends: 3931 [2023-12-02 16:51:35,559 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 16:51:35,559 INFO L413 NwaCegarLoop]: 3196 mSDtfsCounter, 67 mSDsluCounter, 9411 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 12607 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:35,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 12607 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:51:35,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2023-12-02 16:51:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3833. [2023-12-02 16:51:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3406 states have (on average 1.5616559013505578) internal successors, (5319), 3415 states have internal predecessors, (5319), 222 states have call successors, (222), 203 states have call predecessors, (222), 203 states have return successors, (251), 214 states have call predecessors, (251), 220 states have call successors, (251) [2023-12-02 16:51:35,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 5792 transitions. [2023-12-02 16:51:35,717 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 5792 transitions. Word has length 110 [2023-12-02 16:51:35,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:35,717 INFO L495 AbstractCegarLoop]: Abstraction has 3833 states and 5792 transitions. [2023-12-02 16:51:35,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 16:51:35,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 5792 transitions. [2023-12-02 16:51:35,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 16:51:35,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:35,721 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, 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 16:51:35,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 16:51:35,721 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:35,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:35,722 INFO L85 PathProgramCache]: Analyzing trace with hash 367118358, now seen corresponding path program 1 times [2023-12-02 16:51:35,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:35,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723303001] [2023-12-02 16:51:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:35,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:35,889 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:51:35,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:35,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723303001] [2023-12-02 16:51:35,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723303001] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:51:35,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117925688] [2023-12-02 16:51:35,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:35,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:35,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:35,892 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:51:35,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 16:51:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:36,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 16:51:36,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:51:36,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:51:36,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117925688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:51:36,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:51:36,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2023-12-02 16:51:36,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724656259] [2023-12-02 16:51:36,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:51:36,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:51:36,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:36,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:51:36,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:51:36,052 INFO L87 Difference]: Start difference. First operand 3833 states and 5792 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 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 16:51:36,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:36,823 INFO L93 Difference]: Finished difference Result 5671 states and 7935 transitions. [2023-12-02 16:51:36,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:51:36,824 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), 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 110 [2023-12-02 16:51:36,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:36,829 INFO L225 Difference]: With dead ends: 5671 [2023-12-02 16:51:36,829 INFO L226 Difference]: Without dead ends: 4222 [2023-12-02 16:51:36,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 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 16:51:36,832 INFO L413 NwaCegarLoop]: 3199 mSDtfsCounter, 187 mSDsluCounter, 9336 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 12535 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:36,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 12535 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:51:36,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4222 states. [2023-12-02 16:51:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4222 to 3993. [2023-12-02 16:51:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3993 states, 3519 states have (on average 1.5441886899687411) internal successors, (5434), 3529 states have internal predecessors, (5434), 250 states have call successors, (250), 225 states have call predecessors, (250), 222 states have return successors, (295), 238 states have call predecessors, (295), 248 states have call successors, (295) [2023-12-02 16:51:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3993 states to 3993 states and 5979 transitions. [2023-12-02 16:51:37,013 INFO L78 Accepts]: Start accepts. Automaton has 3993 states and 5979 transitions. Word has length 110 [2023-12-02 16:51:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:37,013 INFO L495 AbstractCegarLoop]: Abstraction has 3993 states and 5979 transitions. [2023-12-02 16:51:37,013 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), 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 16:51:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3993 states and 5979 transitions. [2023-12-02 16:51:37,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 16:51:37,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:37,017 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2023-12-02 16:51:37,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 16:51:37,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:37,218 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:37,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:37,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2131892304, now seen corresponding path program 1 times [2023-12-02 16:51:37,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:37,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159968793] [2023-12-02 16:51:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:37,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 16:51:37,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:37,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159968793] [2023-12-02 16:51:37,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159968793] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:51:37,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651732287] [2023-12-02 16:51:37,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:37,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:37,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:37,421 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:51:37,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 16:51:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:37,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 16:51:37,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:51:37,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:51:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-02 16:51:37,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651732287] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:51:37,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [232217985] [2023-12-02 16:51:37,850 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2023-12-02 16:51:37,851 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:51:37,851 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:51:37,851 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:51:37,851 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:51:42,970 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 83 for LOIs [2023-12-02 16:51:42,981 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 129 for LOIs [2023-12-02 16:51:43,091 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 135 for LOIs [2023-12-02 16:51:43,206 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 64 for LOIs [2023-12-02 16:51:43,212 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 64 for LOIs [2023-12-02 16:51:43,235 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 88 for LOIs [2023-12-02 16:51:43,381 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 64 for LOIs [2023-12-02 16:51:43,809 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:51:54,269 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '164153#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (= 5 ~a20~0) (<= 1 |#StackHeapBarrier|) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ 2 ~local~0))) (<= 0 (+ ~local~0 2147483648)) (exists ((|v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_13| Int)) (and (<= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_13| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_13|)) (not (= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_13| 0)))) (= ~a~0 1) (= ~d~0 4) (= ~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) (exists ((|v_ULTIMATE.start_eval_~tmp~0#1_BEFORE_CALL_23| Int)) (and (<= 0 |v_ULTIMATE.start_eval_~tmp~0#1_BEFORE_CALL_23|) (not (= |v_ULTIMATE.start_eval_~tmp~0#1_BEFORE_CALL_23| 0)) (<= |v_ULTIMATE.start_eval_~tmp~0#1_BEFORE_CALL_23| 1))) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (<= ~token~0 2147483647) (= ~a27~0 1) (<= 0 (+ ~token~0 2147483648)) (= ~a2~0 10) (<= 0 ~t1_pc~0))' at error location [2023-12-02 16:51:54,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:51:54,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:51:54,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2023-12-02 16:51:54,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714743760] [2023-12-02 16:51:54,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:51:54,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 16:51:54,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:51:54,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 16:51:54,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=4409, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 16:51:54,273 INFO L87 Difference]: Start difference. First operand 3993 states and 5979 transitions. Second operand has 17 states, 14 states have (on average 8.857142857142858) internal successors, (124), 15 states have internal predecessors, (124), 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 16:51:57,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:51:57,862 INFO L93 Difference]: Finished difference Result 6537 states and 9108 transitions. [2023-12-02 16:51:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-12-02 16:51:57,863 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.857142857142858) internal successors, (124), 15 states have internal predecessors, (124), 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 116 [2023-12-02 16:51:57,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:51:57,869 INFO L225 Difference]: With dead ends: 6537 [2023-12-02 16:51:57,869 INFO L226 Difference]: Without dead ends: 4348 [2023-12-02 16:51:57,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 334 SyntacticMatches, 3 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13073 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=2157, Invalid=28643, Unknown=0, NotChecked=0, Total=30800 [2023-12-02 16:51:57,881 INFO L413 NwaCegarLoop]: 3411 mSDtfsCounter, 14252 mSDsluCounter, 20507 mSDsCounter, 0 mSdLazyCounter, 3208 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14259 SdHoareTripleChecker+Valid, 23918 SdHoareTripleChecker+Invalid, 3485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 3208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:51:57,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14259 Valid, 23918 Invalid, 3485 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [277 Valid, 3208 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 16:51:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4348 states. [2023-12-02 16:51:58,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4348 to 3375. [2023-12-02 16:51:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3375 states, 3031 states have (on average 1.602441438469152) internal successors, (4857), 3038 states have internal predecessors, (4857), 178 states have call successors, (178), 165 states have call predecessors, (178), 164 states have return successors, (214), 171 states have call predecessors, (214), 176 states have call successors, (214) [2023-12-02 16:51:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3375 states to 3375 states and 5249 transitions. [2023-12-02 16:51:58,078 INFO L78 Accepts]: Start accepts. Automaton has 3375 states and 5249 transitions. Word has length 116 [2023-12-02 16:51:58,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:51:58,078 INFO L495 AbstractCegarLoop]: Abstraction has 3375 states and 5249 transitions. [2023-12-02 16:51:58,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.857142857142858) internal successors, (124), 15 states have internal predecessors, (124), 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 16:51:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3375 states and 5249 transitions. [2023-12-02 16:51:58,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 16:51:58,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:51:58,081 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2023-12-02 16:51:58,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-02 16:51:58,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:58,282 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:51:58,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:51:58,282 INFO L85 PathProgramCache]: Analyzing trace with hash -291044087, now seen corresponding path program 1 times [2023-12-02 16:51:58,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:51:58,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346065729] [2023-12-02 16:51:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:58,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:51:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 16:51:58,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:51:58,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346065729] [2023-12-02 16:51:58,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346065729] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:51:58,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106165449] [2023-12-02 16:51:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:51:58,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:51:58,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:51:58,817 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:51:58,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 16:51:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:51:58,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 16:51:58,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:51:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:51:59,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:52:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 16:52:00,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106165449] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:52:00,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1925646410] [2023-12-02 16:52:00,013 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-12-02 16:52:00,013 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:52:00,014 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:52:00,014 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:52:00,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:52:07,217 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 84 for LOIs [2023-12-02 16:52:07,228 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 65 for LOIs [2023-12-02 16:52:07,248 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 137 for LOIs [2023-12-02 16:52:07,379 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 65 for LOIs [2023-12-02 16:52:07,385 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 65 for LOIs [2023-12-02 16:52:07,408 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 94 for LOIs [2023-12-02 16:52:07,650 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 65 for LOIs [2023-12-02 16:52:08,199 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:52:21,740 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '176835#(and (= ~a15~0 1) (<= ~t1_pc~0 1) (exists ((|v_ULTIMATE.start_eval_~tmp~0#1_BEFORE_CALL_37| Int)) (and (not (= |v_ULTIMATE.start_eval_~tmp~0#1_BEFORE_CALL_37| 0)) (<= |v_ULTIMATE.start_eval_~tmp~0#1_BEFORE_CALL_37| 1) (<= 0 |v_ULTIMATE.start_eval_~tmp~0#1_BEFORE_CALL_37|))) (= 5 ~a20~0) (<= 1 |#StackHeapBarrier|) (<= ~local~0 2147483647) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ 2 ~local~0))) (<= 0 (+ ~local~0 2147483648)) (<= 0 ~t2_pc~0) (= ~a~0 1) (= ~d~0 4) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (<= ~t2_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) (= ~m_st~0 1) (<= ~token~0 2147483647) (exists ((|v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_21| Int)) (and (<= 0 (+ 2147483648 |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_21|)) (<= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_21| 2147483647) (not (= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_21| 0)))) (= ~a27~0 1) (<= 0 (+ ~token~0 2147483648)) (= ~a2~0 10) (<= 0 ~t1_pc~0))' at error location [2023-12-02 16:52:21,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:52:21,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:52:21,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 14] total 39 [2023-12-02 16:52:21,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59965461] [2023-12-02 16:52:21,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:52:21,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-02 16:52:21,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:21,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-02 16:52:21,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=623, Invalid=8497, Unknown=0, NotChecked=0, Total=9120 [2023-12-02 16:52:21,742 INFO L87 Difference]: Start difference. First operand 3375 states and 5249 transitions. Second operand has 39 states, 27 states have (on average 7.592592592592593) internal successors, (205), 30 states have internal predecessors, (205), 17 states have call successors, (45), 12 states have call predecessors, (45), 19 states have return successors, (44), 17 states have call predecessors, (44), 17 states have call successors, (44) [2023-12-02 16:52:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:32,952 INFO L93 Difference]: Finished difference Result 8218 states and 10986 transitions. [2023-12-02 16:52:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2023-12-02 16:52:32,953 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 27 states have (on average 7.592592592592593) internal successors, (205), 30 states have internal predecessors, (205), 17 states have call successors, (45), 12 states have call predecessors, (45), 19 states have return successors, (44), 17 states have call predecessors, (44), 17 states have call successors, (44) Word has length 118 [2023-12-02 16:52:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:32,966 INFO L225 Difference]: With dead ends: 8218 [2023-12-02 16:52:32,966 INFO L226 Difference]: Without dead ends: 6769 [2023-12-02 16:52:32,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 343 SyntacticMatches, 1 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32045 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=8112, Invalid=70008, Unknown=0, NotChecked=0, Total=78120 [2023-12-02 16:52:32,982 INFO L413 NwaCegarLoop]: 3235 mSDtfsCounter, 29432 mSDsluCounter, 42416 mSDsCounter, 0 mSdLazyCounter, 8337 mSolverCounterSat, 1427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29432 SdHoareTripleChecker+Valid, 45651 SdHoareTripleChecker+Invalid, 9764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1427 IncrementalHoareTripleChecker+Valid, 8337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:32,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29432 Valid, 45651 Invalid, 9764 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1427 Valid, 8337 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-02 16:52:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6769 states. [2023-12-02 16:52:33,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6769 to 3653. [2023-12-02 16:52:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3234 states have (on average 1.5683364254792826) internal successors, (5072), 3255 states have internal predecessors, (5072), 213 states have call successors, (213), 193 states have call predecessors, (213), 204 states have return successors, (233), 204 states have call predecessors, (233), 211 states have call successors, (233) [2023-12-02 16:52:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 5518 transitions. [2023-12-02 16:52:33,262 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 5518 transitions. Word has length 118 [2023-12-02 16:52:33,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:33,263 INFO L495 AbstractCegarLoop]: Abstraction has 3653 states and 5518 transitions. [2023-12-02 16:52:33,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 27 states have (on average 7.592592592592593) internal successors, (205), 30 states have internal predecessors, (205), 17 states have call successors, (45), 12 states have call predecessors, (45), 19 states have return successors, (44), 17 states have call predecessors, (44), 17 states have call successors, (44) [2023-12-02 16:52:33,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 5518 transitions. [2023-12-02 16:52:33,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-02 16:52:33,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:33,265 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:33,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 16:52:33,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:52:33,465 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:52:33,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:33,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2003765926, now seen corresponding path program 1 times [2023-12-02 16:52:33,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:33,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201183705] [2023-12-02 16:52:33,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:33,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-02 16:52:33,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:52:33,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201183705] [2023-12-02 16:52:33,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201183705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:52:33,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:52:33,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:52:33,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747737078] [2023-12-02 16:52:33,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:52:33,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:52:33,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:52:33,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:52:33,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:52:33,576 INFO L87 Difference]: Start difference. First operand 3653 states and 5518 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 16:52:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:52:34,631 INFO L93 Difference]: Finished difference Result 6798 states and 9076 transitions. [2023-12-02 16:52:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:52:34,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 134 [2023-12-02 16:52:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:52:34,640 INFO L225 Difference]: With dead ends: 6798 [2023-12-02 16:52:34,641 INFO L226 Difference]: Without dead ends: 5717 [2023-12-02 16:52:34,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:52:34,645 INFO L413 NwaCegarLoop]: 3285 mSDtfsCounter, 3509 mSDsluCounter, 6432 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3509 SdHoareTripleChecker+Valid, 9717 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:52:34,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3509 Valid, 9717 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:52:34,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5717 states. [2023-12-02 16:52:34,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5717 to 4454. [2023-12-02 16:52:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 3860 states have (on average 1.500777202072539) internal successors, (5793), 3887 states have internal predecessors, (5793), 303 states have call successors, (303), 272 states have call predecessors, (303), 289 states have return successors, (329), 294 states have call predecessors, (329), 301 states have call successors, (329) [2023-12-02 16:52:34,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 6425 transitions. [2023-12-02 16:52:34,974 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 6425 transitions. Word has length 134 [2023-12-02 16:52:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:52:34,974 INFO L495 AbstractCegarLoop]: Abstraction has 4454 states and 6425 transitions. [2023-12-02 16:52:34,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 16:52:34,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 6425 transitions. [2023-12-02 16:52:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 16:52:34,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:52:34,977 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:34,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-02 16:52:34,977 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:52:34,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:52:34,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2074665666, now seen corresponding path program 1 times [2023-12-02 16:52:34,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:52:34,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750330524] [2023-12-02 16:52:34,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:52:34,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:52:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:52:34,996 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:52:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:52:35,097 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 16:52:35,097 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:52:35,098 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 16:52:35,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 16:52:35,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-02 16:52:35,104 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] [2023-12-02 16:52:35,108 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:52:35,182 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 16:52:35,187 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 16:52:35,201 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 16:52:35,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:52:35 BoogieIcfgContainer [2023-12-02 16:52:35,235 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:52:35,236 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:52:35,236 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:52:35,236 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:52:35,236 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:50:52" (3/4) ... [2023-12-02 16:52:35,237 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 16:52:35,268 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 16:52:35,269 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 16:52:35,278 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 16:52:35,375 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 16:52:35,375 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:52:35,376 INFO L158 Benchmark]: Toolchain (without parser) took 116144.29ms. Allocated memory was 153.1MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 77.6MB in the beginning and 622.3MB in the end (delta: -544.7MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-12-02 16:52:35,376 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 56.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:52:35,377 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3233.51ms. Allocated memory was 153.1MB in the beginning and 203.4MB in the end (delta: 50.3MB). Free memory was 77.1MB in the beginning and 60.8MB in the end (delta: 16.3MB). Peak memory consumption was 107.9MB. Max. memory is 16.1GB. [2023-12-02 16:52:35,377 INFO L158 Benchmark]: Boogie Procedure Inliner took 427.26ms. Allocated memory was 203.4MB in the beginning and 260.0MB in the end (delta: 56.6MB). Free memory was 60.8MB in the beginning and 89.4MB in the end (delta: -28.6MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2023-12-02 16:52:35,377 INFO L158 Benchmark]: Boogie Preprocessor took 411.83ms. Allocated memory is still 260.0MB. Free memory was 89.4MB in the beginning and 96.3MB in the end (delta: -6.8MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. [2023-12-02 16:52:35,378 INFO L158 Benchmark]: RCFGBuilder took 9105.22ms. Allocated memory was 260.0MB in the beginning and 813.7MB in the end (delta: 553.6MB). Free memory was 96.3MB in the beginning and 403.5MB in the end (delta: -307.3MB). Peak memory consumption was 510.6MB. Max. memory is 16.1GB. [2023-12-02 16:52:35,378 INFO L158 Benchmark]: TraceAbstraction took 102820.33ms. Allocated memory was 813.7MB in the beginning and 2.0GB in the end (delta: 1.1GB). Free memory was 403.5MB in the beginning and 641.2MB in the end (delta: -237.6MB). Peak memory consumption was 906.4MB. Max. memory is 16.1GB. [2023-12-02 16:52:35,379 INFO L158 Benchmark]: Witness Printer took 139.66ms. Allocated memory is still 2.0GB. Free memory was 641.2MB in the beginning and 622.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 16:52:35,381 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 104.9MB. Free memory is still 56.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3233.51ms. Allocated memory was 153.1MB in the beginning and 203.4MB in the end (delta: 50.3MB). Free memory was 77.1MB in the beginning and 60.8MB in the end (delta: 16.3MB). Peak memory consumption was 107.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 427.26ms. Allocated memory was 203.4MB in the beginning and 260.0MB in the end (delta: 56.6MB). Free memory was 60.8MB in the beginning and 89.4MB in the end (delta: -28.6MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 411.83ms. Allocated memory is still 260.0MB. Free memory was 89.4MB in the beginning and 96.3MB in the end (delta: -6.8MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. * RCFGBuilder took 9105.22ms. Allocated memory was 260.0MB in the beginning and 813.7MB in the end (delta: 553.6MB). Free memory was 96.3MB in the beginning and 403.5MB in the end (delta: -307.3MB). Peak memory consumption was 510.6MB. Max. memory is 16.1GB. * TraceAbstraction took 102820.33ms. Allocated memory was 813.7MB in the beginning and 2.0GB in the end (delta: 1.1GB). Free memory was 403.5MB in the beginning and 641.2MB in the end (delta: -237.6MB). Peak memory consumption was 906.4MB. Max. memory is 16.1GB. * Witness Printer took 139.66ms. Allocated memory is still 2.0GB. Free memory was 641.2MB in the beginning and 622.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. 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 m_st ; [L11181] int t1_st ; [L11182] int t2_st ; [L11183] int m_i ; [L11184] int t1_i ; [L11185] int t2_i ; [L11186] int M_E = 2; [L11187] int T1_E = 2; [L11188] int T2_E = 2; [L11189] int E_M = 2; [L11190] int E_1 = 2; [L11191] int E_2 = 2; [L11196] int token ; [L11198] int local ; [L11776] COND FALSE !(__VERIFIER_nondet_int()) [L11779] CALL main2() [L11763] int __retres1 ; [L11767] CALL init_model() [L11677] m_i = 1 [L11678] t1_i = 1 [L11679] t2_i = 1 [L11767] RET init_model() [L11768] CALL start_simulation() [L11704] int kernel_st ; [L11705] int tmp ; [L11706] int tmp___0 ; [L11710] kernel_st = 0 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=0] [L11711] FCALL update_channels() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=0] [L11712] CALL init_threads() [L11396] COND TRUE m_i == 1 [L11397] m_st = 0 [L11401] COND TRUE t1_i == 1 [L11402] t1_st = 0 [L11406] COND TRUE t2_i == 1 [L11407] t2_st = 0 [L11712] RET init_threads() [L11713] CALL fire_delta_events() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_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, token=0] [L11509] COND FALSE !(M_E == 0) [L11514] COND FALSE !(T1_E == 0) [L11519] COND FALSE !(T2_E == 0) [L11524] COND FALSE !(E_M == 0) [L11529] COND FALSE !(E_1 == 0) [L11534] COND FALSE !(E_2 == 0) [L11713] RET fire_delta_events() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=0] [L11714] CALL activate_threads() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_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, token=0] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_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, token=0] [L11331] COND FALSE !(m_pc == 1) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_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, token=0] [L11341] __retres1 = 0 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_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, token=0] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_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, token=0] [L11350] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_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, token=0] [L11360] __retres1 = 0 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_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, token=0] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_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, token=0] [L11369] COND FALSE !(t2_pc == 1) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_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, token=0] [L11379] __retres1 = 0 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_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, token=0] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11714] RET activate_threads() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=0] [L11715] CALL reset_delta_events() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(E_1)=2, \old(E_2)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_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, token=0] [L11547] COND FALSE !(M_E == 1) [L11552] COND FALSE !(T1_E == 1) [L11557] COND FALSE !(T2_E == 1) [L11562] COND FALSE !(E_M == 1) [L11567] COND FALSE !(E_1 == 1) [L11572] COND FALSE !(E_2 == 1) [L11715] RET reset_delta_events() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=0] [L11718] COND TRUE 1 [L11721] kernel_st = 1 [L11722] CALL eval() [L11442] int tmp ; VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=0] [L11446] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=0] [L11449] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=0] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=0] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp=1, token=0] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND FALSE, EXPR !(\read(tmp_ndt_1)) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp=1, tmp_ndt_1=0, token=0] [L11456-L11467] { 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_M=2, M_E=2, T1_E=2, T2_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, tmp=1, token=0] [L11470] COND TRUE t1_st == 0 [L11471] int tmp_ndt_2; [L11472] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L11473] COND TRUE, EXPR \read(tmp_ndt_2) [L11475] EXPR t1_st = 1 [L11476] CALL, EXPR transmit1() [L11259] COND TRUE t1_pc == 0 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=0] [L11270] COND TRUE 1 [L11272] t1_pc = 1 [L11273] t1_st = 2 [L11476] RET, EXPR transmit1() [L11470-L11481] { 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_M=2, M_E=2, T1_E=2, T2_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, tmp=1, token=0] [L11484] COND TRUE t2_st == 0 [L11485] int tmp_ndt_3; [L11486] EXPR tmp_ndt_3 = __VERIFIER_nondet_int() [L11487] COND TRUE, EXPR \read(tmp_ndt_3) [L11489] EXPR t2_st = 1 [L11490] CALL, EXPR transmit2() [L11295] COND TRUE t2_pc == 0 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=0] [L11306] COND TRUE 1 [L11308] t2_pc = 1 [L11309] t2_st = 2 [L11490] RET, EXPR transmit2() [L11484-L11495] { 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_M=2, M_E=2, T1_E=2, T2_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, tmp=1, token=0] [L11446] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp=1, token=0] [L11449] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=0] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp=1, token=0] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp=1, token=0] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND TRUE, EXPR \read(tmp_ndt_1) [L11461] EXPR m_st = 1 [L11462] CALL, EXPR master() [L11201] int tmp_var = __VERIFIER_nondet_int(); [L11203] COND TRUE m_pc == 0 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp_var=0, token=0] [L11214] COND TRUE 1 [L11217] token = __VERIFIER_nondet_int() [L11218] local = token [L11219] E_1 = 1 VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp_var=0, token=0] [L11220] CALL immediate_notify() VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_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, token=0] [L11620] CALL activate_threads() VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_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, token=0] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_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, token=0] [L11331] COND FALSE !(m_pc == 1) VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_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, token=0] [L11341] __retres1 = 0 VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_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, token=0] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_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, token=0] [L11350] COND TRUE t1_pc == 1 VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_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, token=0] [L11351] COND TRUE E_1 == 1 [L11352] __retres1 = 1 VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_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, token=0] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND TRUE \read(tmp___0) [L11599] t1_st = 0 [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_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, token=0] [L11369] COND TRUE t2_pc == 1 VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_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, token=0] [L11370] COND FALSE !(E_2 == 1) VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_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, token=0] [L11379] __retres1 = 0 VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_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, token=0] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11620] RET activate_threads() VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_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, token=0] [L11220] RET immediate_notify() VAL [E_1=1, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp_var=0, token=0] [L11221] E_1 = 2 [L11222] m_pc = 1 [L11223] m_st = 2 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp_var=0, token=0] [L11462] RET, EXPR master() [L11456-L11467] { 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_M=2, M_E=2, T1_E=2, T2_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, tmp=1, token=0] [L11470] COND TRUE t1_st == 0 [L11471] int tmp_ndt_2; [L11472] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L11473] COND TRUE, EXPR \read(tmp_ndt_2) [L11475] EXPR t1_st = 1 [L11476] CALL, EXPR transmit1() [L11259] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=0] [L11262] COND TRUE t1_pc == 1 [L11278] token += 1 [L11279] E_2 = 1 VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_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, token=1] [L11280] CALL immediate_notify() VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11620] CALL activate_threads() VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11331] COND TRUE m_pc == 1 VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11332] COND FALSE !(E_M == 1) VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11341] __retres1 = 0 VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND FALSE !(\read(tmp)) [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11350] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11351] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11360] __retres1 = 0 VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11369] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11370] COND TRUE E_2 == 1 [L11371] __retres1 = 1 VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND TRUE \read(tmp___1) [L11607] t2_st = 0 [L11620] RET activate_threads() VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_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, token=1] [L11280] RET immediate_notify() VAL [E_1=2, E_2=1, E_M=2, M_E=2, T1_E=2, T2_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, token=1] [L11281] E_2 = 2 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=1] [L11270] COND TRUE 1 [L11272] t1_pc = 1 [L11273] t1_st = 2 [L11476] RET, EXPR transmit1() [L11470-L11481] { 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_M=2, M_E=2, T1_E=2, T2_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, tmp=1, token=1] [L11484] COND TRUE t2_st == 0 [L11485] int tmp_ndt_3; [L11486] EXPR tmp_ndt_3 = __VERIFIER_nondet_int() [L11487] COND TRUE, EXPR \read(tmp_ndt_3) [L11489] EXPR t2_st = 1 [L11490] CALL, EXPR transmit2() [L11295] COND FALSE !(t2_pc == 0) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=1] [L11298] COND TRUE t2_pc == 1 [L11314] token += 1 [L11315] E_M = 1 VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_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, token=2] [L11316] CALL immediate_notify() VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11620] CALL activate_threads() VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11582] int tmp ; [L11583] int tmp___0 ; [L11584] int tmp___1 ; [L11588] CALL, EXPR is_master_triggered() [L11328] int __retres1 ; VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11331] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11332] COND TRUE E_M == 1 [L11333] __retres1 = 1 VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11343] return (__retres1); [L11588] RET, EXPR is_master_triggered() [L11588] tmp = is_master_triggered() [L11590] COND TRUE \read(tmp) [L11591] m_st = 0 [L11596] CALL, EXPR is_transmit1_triggered() [L11347] int __retres1 ; VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11350] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11351] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11360] __retres1 = 0 VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11362] return (__retres1); [L11596] RET, EXPR is_transmit1_triggered() [L11596] tmp___0 = is_transmit1_triggered() [L11598] COND FALSE !(\read(tmp___0)) [L11604] CALL, EXPR is_transmit2_triggered() [L11366] int __retres1 ; VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11369] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11370] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11379] __retres1 = 0 VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11381] return (__retres1); [L11604] RET, EXPR is_transmit2_triggered() [L11604] tmp___1 = is_transmit2_triggered() [L11606] COND FALSE !(\read(tmp___1)) [L11620] RET activate_threads() VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_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=1, token=2] [L11316] RET immediate_notify() VAL [E_1=2, E_2=2, E_M=1, M_E=2, T1_E=2, T2_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=1, token=2] [L11317] E_M = 2 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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=1, token=2] [L11306] COND TRUE 1 [L11308] t2_pc = 1 [L11309] t2_st = 2 [L11490] RET, EXPR transmit2() [L11484-L11495] { 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_M=2, M_E=2, T1_E=2, T2_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, tmp=1, token=2] [L11446] COND TRUE 1 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp=1, token=2] [L11449] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=2] [L11416] int __retres1 ; [L11419] COND TRUE m_st == 0 [L11420] __retres1 = 1 [L11437] return (__retres1); [L11449] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp=1, token=2] [L11449] tmp = exists_runnable_thread() [L11451] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp=1, token=2] [L11456] COND TRUE m_st == 0 [L11457] int tmp_ndt_1; [L11458] tmp_ndt_1 = __VERIFIER_nondet_int() [L11459] COND TRUE \read(tmp_ndt_1) [L11461] m_st = 1 [L11462] CALL master() [L11201] int tmp_var = __VERIFIER_nondet_int(); [L11203] COND FALSE !(m_pc == 0) VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp_var=5, token=2] [L11206] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp_var=5, token=2] [L11228] COND FALSE !(token != local + 2) [L11233] COND TRUE tmp_var <= 5 [L11234] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp_var=5, token=2] [L11239] COND TRUE tmp_var <= 5 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp_var=5, token=2] [L11240] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp_var=5, token=2] [L11241] COND TRUE tmp_var == 5 VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, tmp_var=5, token=2] [L11242] CALL error() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=2] [L11173] reach_error() VAL [E_1=2, E_2=2, E_M=2, M_E=2, T1_E=2, T2_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, token=2] - UnprovableResult [Line: 11118]: 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, 1730 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 102.6s, OverallIterations: 23, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 30.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99565 SdHoareTripleChecker+Valid, 15.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99511 mSDsluCounter, 239264 SdHoareTripleChecker+Invalid, 13.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 168635 mSDsCounter, 2406 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26573 IncrementalHoareTripleChecker+Invalid, 28979 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2406 mSolverCounterUnsat, 70629 mSDtfsCounter, 26573 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3081 GetRequests, 2388 SyntacticMatches, 11 SemanticMatches, 682 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54311 ImplicationChecksByTransitivity, 44.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4454occurred in iteration=22, InterpolantAutomatonStates: 472, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 7777 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 4030 NumberOfCodeBlocks, 3990 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 4199 ConstructedInterpolants, 0 QuantifiedInterpolants, 8470 SizeOfPredicates, 20 NumberOfNonLiveVariables, 7508 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 41 InterpolantComputations, 19 PerfectInterpolantSequences, 2220/2502 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 16:52:35,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f600a874-5167-40e7-95e2-f0571b9ba87c/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