./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1924d97c04cfa5367e34b409aac63a4fd986c243eb4aa0af30578d8598fbdf71 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:36,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:36,923 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:45:36,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:36,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:36,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:36,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:36,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:36,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:36,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:36,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:36,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:36,998 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:37,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:37,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:45:37,001 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:37,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:37,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:37,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:37,003 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:45:37,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:37,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:45:37,004 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:37,005 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:45:37,005 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:37,006 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:37,006 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:37,006 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:37,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:37,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:37,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:37,009 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:45:37,009 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:37,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:37,010 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:37,010 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:45:37,010 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:37,010 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:37,011 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:37,011 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1924d97c04cfa5367e34b409aac63a4fd986c243eb4aa0af30578d8598fbdf71 [2023-11-19 07:45:37,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:37,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:37,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:37,374 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:37,375 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:37,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2023-11-19 07:45:40,592 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:40,874 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:40,875 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2023-11-19 07:45:40,886 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/data/2fb259eb7/060b038f41ce4802a9531264f4183748/FLAG21c535013 [2023-11-19 07:45:40,904 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/data/2fb259eb7/060b038f41ce4802a9531264f4183748 [2023-11-19 07:45:40,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:40,912 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:40,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:40,914 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:40,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:40,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:40" (1/1) ... [2023-11-19 07:45:40,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d168bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:40, skipping insertion in model container [2023-11-19 07:45:40,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:40" (1/1) ... [2023-11-19 07:45:40,994 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:41,141 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_f78617d5-a169-4417-9554-bd708b5bcfa7/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2023-11-19 07:45:41,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:41,203 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:41,215 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_f78617d5-a169-4417-9554-bd708b5bcfa7/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2023-11-19 07:45:41,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:41,259 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:41,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:41 WrapperNode [2023-11-19 07:45:41,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:41,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:41,261 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:41,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:41,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:41" (1/1) ... [2023-11-19 07:45:41,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:41" (1/1) ... [2023-11-19 07:45:41,309 INFO L138 Inliner]: procedures = 24, calls = 22, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 204 [2023-11-19 07:45:41,309 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:41,310 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:41,310 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:41,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:41,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:41" (1/1) ... [2023-11-19 07:45:41,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:41" (1/1) ... [2023-11-19 07:45:41,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:41" (1/1) ... [2023-11-19 07:45:41,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:41" (1/1) ... [2023-11-19 07:45:41,329 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:41" (1/1) ... [2023-11-19 07:45:41,336 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:41" (1/1) ... [2023-11-19 07:45:41,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:41" (1/1) ... [2023-11-19 07:45:41,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:41" (1/1) ... [2023-11-19 07:45:41,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:41,344 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:41,344 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:41,344 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:41,345 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:41" (1/1) ... [2023-11-19 07:45:41,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:41,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:41,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:41,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:41,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:41,422 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-19 07:45:41,422 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-19 07:45:41,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:41,423 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-19 07:45:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-19 07:45:41,423 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-11-19 07:45:41,424 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-11-19 07:45:41,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:41,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:41,518 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:41,520 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:41,779 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:41,791 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:41,791 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:45:41,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:41 BoogieIcfgContainer [2023-11-19 07:45:41,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:41,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:41,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:41,807 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:41,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:40" (1/3) ... [2023-11-19 07:45:41,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4388eebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:41, skipping insertion in model container [2023-11-19 07:45:41,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:41" (2/3) ... [2023-11-19 07:45:41,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4388eebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:41, skipping insertion in model container [2023-11-19 07:45:41,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:41" (3/3) ... [2023-11-19 07:45:41,811 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2023-11-19 07:45:41,833 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:41,834 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:45:41,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:41,901 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=PETRI_NET, 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;@2e6e299f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:41,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:45:41,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 63 states have (on average 1.5396825396825398) internal successors, (97), 66 states have internal predecessors, (97), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 07:45:41,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 07:45:41,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:41,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:41,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:41,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash -21131724, now seen corresponding path program 1 times [2023-11-19 07:45:41,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:41,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798679837] [2023-11-19 07:45:41,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:41,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:42,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:45:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:42,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 07:45:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:42,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:42,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798679837] [2023-11-19 07:45:42,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798679837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:42,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:42,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:42,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808627376] [2023-11-19 07:45:42,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:42,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:42,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:42,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:42,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:42,469 INFO L87 Difference]: Start difference. First operand has 74 states, 63 states have (on average 1.5396825396825398) internal successors, (97), 66 states have internal predecessors, (97), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:45:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:42,688 INFO L93 Difference]: Finished difference Result 214 states and 325 transitions. [2023-11-19 07:45:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:45:42,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2023-11-19 07:45:42,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:42,707 INFO L225 Difference]: With dead ends: 214 [2023-11-19 07:45:42,707 INFO L226 Difference]: Without dead ends: 138 [2023-11-19 07:45:42,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:42,717 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 103 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:42,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 260 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:45:42,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-19 07:45:42,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2023-11-19 07:45:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 118 states have internal predecessors, (160), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-19 07:45:42,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 184 transitions. [2023-11-19 07:45:42,824 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 184 transitions. Word has length 43 [2023-11-19 07:45:42,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:42,825 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 184 transitions. [2023-11-19 07:45:42,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:45:42,825 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 184 transitions. [2023-11-19 07:45:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 07:45:42,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:42,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:42,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:45:42,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:42,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:42,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1928738726, now seen corresponding path program 1 times [2023-11-19 07:45:42,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:42,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349523298] [2023-11-19 07:45:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:42,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:42,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:45:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:42,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:45:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:42,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:42,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349523298] [2023-11-19 07:45:42,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349523298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:42,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:42,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:42,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538295183] [2023-11-19 07:45:42,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:42,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:42,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:42,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:42,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:42,953 INFO L87 Difference]: Start difference. First operand 132 states and 184 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:45:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:43,101 INFO L93 Difference]: Finished difference Result 380 states and 524 transitions. [2023-11-19 07:45:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:45:43,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2023-11-19 07:45:43,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:43,106 INFO L225 Difference]: With dead ends: 380 [2023-11-19 07:45:43,107 INFO L226 Difference]: Without dead ends: 256 [2023-11-19 07:45:43,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:43,111 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 100 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:43,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 274 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:45:43,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-19 07:45:43,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 199. [2023-11-19 07:45:43,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 177 states have (on average 1.3785310734463276) internal successors, (244), 179 states have internal predecessors, (244), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2023-11-19 07:45:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 274 transitions. [2023-11-19 07:45:43,159 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 274 transitions. Word has length 44 [2023-11-19 07:45:43,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:43,160 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 274 transitions. [2023-11-19 07:45:43,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:45:43,161 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 274 transitions. [2023-11-19 07:45:43,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 07:45:43,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:43,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:43,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:45:43,166 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:43,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:43,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1081871109, now seen corresponding path program 1 times [2023-11-19 07:45:43,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:43,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986932403] [2023-11-19 07:45:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:45:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:43,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:45:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:43,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:43,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986932403] [2023-11-19 07:45:43,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986932403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:43,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:43,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:43,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489118268] [2023-11-19 07:45:43,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:43,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:43,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:43,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:43,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:43,337 INFO L87 Difference]: Start difference. First operand 199 states and 274 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:45:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:43,500 INFO L93 Difference]: Finished difference Result 607 states and 833 transitions. [2023-11-19 07:45:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:45:43,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2023-11-19 07:45:43,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:43,517 INFO L225 Difference]: With dead ends: 607 [2023-11-19 07:45:43,525 INFO L226 Difference]: Without dead ends: 416 [2023-11-19 07:45:43,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:43,533 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 117 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:43,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 243 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:45:43,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-11-19 07:45:43,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 364. [2023-11-19 07:45:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 323 states have (on average 1.3436532507739938) internal successors, (434), 328 states have internal predecessors, (434), 24 states have call successors, (24), 15 states have call predecessors, (24), 16 states have return successors, (34), 20 states have call predecessors, (34), 22 states have call successors, (34) [2023-11-19 07:45:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 492 transitions. [2023-11-19 07:45:43,628 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 492 transitions. Word has length 44 [2023-11-19 07:45:43,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:43,629 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 492 transitions. [2023-11-19 07:45:43,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:45:43,630 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 492 transitions. [2023-11-19 07:45:43,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 07:45:43,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:43,635 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:45:43,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:45:43,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:43,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:43,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1162995804, now seen corresponding path program 1 times [2023-11-19 07:45:43,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:43,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690993087] [2023-11-19 07:45:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:43,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:43,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:45:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:43,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 07:45:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:43,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-19 07:45:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:45:43,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:43,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690993087] [2023-11-19 07:45:43,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690993087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:43,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:43,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:43,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725527345] [2023-11-19 07:45:43,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:43,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:43,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:43,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:43,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:43,814 INFO L87 Difference]: Start difference. First operand 364 states and 492 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:45:43,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:43,950 INFO L93 Difference]: Finished difference Result 948 states and 1277 transitions. [2023-11-19 07:45:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:45:43,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 61 [2023-11-19 07:45:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:43,955 INFO L225 Difference]: With dead ends: 948 [2023-11-19 07:45:43,956 INFO L226 Difference]: Without dead ends: 592 [2023-11-19 07:45:43,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:43,959 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 84 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:43,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 327 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:45:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2023-11-19 07:45:44,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 554. [2023-11-19 07:45:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 489 states have (on average 1.296523517382413) internal successors, (634), 496 states have internal predecessors, (634), 38 states have call successors, (38), 23 states have call predecessors, (38), 26 states have return successors, (58), 34 states have call predecessors, (58), 36 states have call successors, (58) [2023-11-19 07:45:44,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 730 transitions. [2023-11-19 07:45:44,008 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 730 transitions. Word has length 61 [2023-11-19 07:45:44,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:44,009 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 730 transitions. [2023-11-19 07:45:44,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:45:44,010 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 730 transitions. [2023-11-19 07:45:44,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 07:45:44,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:44,014 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:45:44,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:45:44,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:44,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:44,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1047893343, now seen corresponding path program 1 times [2023-11-19 07:45:44,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:44,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333771428] [2023-11-19 07:45:44,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:44,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:45:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 07:45:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-19 07:45:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:45:44,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:44,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333771428] [2023-11-19 07:45:44,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333771428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:44,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:44,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:44,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853171171] [2023-11-19 07:45:44,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:44,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:44,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:44,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:44,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:44,165 INFO L87 Difference]: Start difference. First operand 554 states and 730 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:45:44,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:44,331 INFO L93 Difference]: Finished difference Result 1207 states and 1583 transitions. [2023-11-19 07:45:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:45:44,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 66 [2023-11-19 07:45:44,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:44,338 INFO L225 Difference]: With dead ends: 1207 [2023-11-19 07:45:44,338 INFO L226 Difference]: Without dead ends: 753 [2023-11-19 07:45:44,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:44,341 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 104 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:44,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 242 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:45:44,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-11-19 07:45:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 698. [2023-11-19 07:45:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 617 states have (on average 1.2722852512155591) internal successors, (785), 626 states have internal predecessors, (785), 46 states have call successors, (46), 29 states have call predecessors, (46), 34 states have return successors, (72), 42 states have call predecessors, (72), 44 states have call successors, (72) [2023-11-19 07:45:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 903 transitions. [2023-11-19 07:45:44,394 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 903 transitions. Word has length 66 [2023-11-19 07:45:44,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:44,394 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 903 transitions. [2023-11-19 07:45:44,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:45:44,395 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 903 transitions. [2023-11-19 07:45:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 07:45:44,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:44,397 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:45:44,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:45:44,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:44,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:44,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1099770361, now seen corresponding path program 1 times [2023-11-19 07:45:44,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:44,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448649887] [2023-11-19 07:45:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:44,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:45:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:45:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:45:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:45:44,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:44,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448649887] [2023-11-19 07:45:44,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448649887] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:44,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807510012] [2023-11-19 07:45:44,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:44,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:44,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:44,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:44,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:45:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:45:44,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:44,805 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:44,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 07:45:44,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807510012] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:44,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2023-11-19 07:45:44,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784797133] [2023-11-19 07:45:44,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:44,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:44,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:45:44,888 INFO L87 Difference]: Start difference. First operand 698 states and 903 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:45:44,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:44,980 INFO L93 Difference]: Finished difference Result 754 states and 971 transitions. [2023-11-19 07:45:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:44,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 67 [2023-11-19 07:45:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:44,988 INFO L225 Difference]: With dead ends: 754 [2023-11-19 07:45:44,989 INFO L226 Difference]: Without dead ends: 751 [2023-11-19 07:45:44,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:45:44,995 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 173 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:44,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 184 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2023-11-19 07:45:45,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 697. [2023-11-19 07:45:45,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 617 states have (on average 1.2690437601296596) internal successors, (783), 625 states have internal predecessors, (783), 45 states have call successors, (45), 29 states have call predecessors, (45), 34 states have return successors, (72), 42 states have call predecessors, (72), 44 states have call successors, (72) [2023-11-19 07:45:45,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 900 transitions. [2023-11-19 07:45:45,061 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 900 transitions. Word has length 67 [2023-11-19 07:45:45,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:45,063 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 900 transitions. [2023-11-19 07:45:45,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:45:45,064 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 900 transitions. [2023-11-19 07:45:45,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 07:45:45,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:45,067 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:45:45,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:45,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:45,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:45,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:45,282 INFO L85 PathProgramCache]: Analyzing trace with hash -267180508, now seen corresponding path program 1 times [2023-11-19 07:45:45,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:45,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668865373] [2023-11-19 07:45:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:45,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:45:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:45:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:45,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:45:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:45:45,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:45,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668865373] [2023-11-19 07:45:45,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668865373] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:45,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607085680] [2023-11-19 07:45:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:45,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:45,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:45,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:45,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:45:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:45,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:45:45,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:45,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:46,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 07:45:46,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607085680] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:46,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:46,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2023-11-19 07:45:46,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647321736] [2023-11-19 07:45:46,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:46,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:45:46,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:46,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:45:46,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:45:46,095 INFO L87 Difference]: Start difference. First operand 697 states and 900 transitions. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-19 07:45:47,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:47,035 INFO L93 Difference]: Finished difference Result 2397 states and 3120 transitions. [2023-11-19 07:45:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-19 07:45:47,036 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 68 [2023-11-19 07:45:47,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:47,047 INFO L225 Difference]: With dead ends: 2397 [2023-11-19 07:45:47,048 INFO L226 Difference]: Without dead ends: 1853 [2023-11-19 07:45:47,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=292, Invalid=1514, Unknown=0, NotChecked=0, Total=1806 [2023-11-19 07:45:47,052 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 397 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:47,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 1493 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:45:47,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2023-11-19 07:45:47,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1086. [2023-11-19 07:45:47,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 967 states have (on average 1.2585315408479834) internal successors, (1217), 983 states have internal predecessors, (1217), 65 states have call successors, (65), 43 states have call predecessors, (65), 53 states have return successors, (106), 59 states have call predecessors, (106), 64 states have call successors, (106) [2023-11-19 07:45:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1388 transitions. [2023-11-19 07:45:47,177 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1388 transitions. Word has length 68 [2023-11-19 07:45:47,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:47,178 INFO L495 AbstractCegarLoop]: Abstraction has 1086 states and 1388 transitions. [2023-11-19 07:45:47,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 10 states have internal predecessors, (150), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-19 07:45:47,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1388 transitions. [2023-11-19 07:45:47,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 07:45:47,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:47,183 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:47,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:47,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:47,413 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:47,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:47,414 INFO L85 PathProgramCache]: Analyzing trace with hash 235450586, now seen corresponding path program 1 times [2023-11-19 07:45:47,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:47,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359540534] [2023-11-19 07:45:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:47,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:47,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:45:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:45:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-19 07:45:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:47,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-19 07:45:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-19 07:45:47,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:47,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359540534] [2023-11-19 07:45:47,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359540534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:47,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35176502] [2023-11-19 07:45:47,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:47,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:47,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:47,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:47,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:45:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:47,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:45:47,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 07:45:47,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:47,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35176502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:47,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:45:47,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-19 07:45:47,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714150342] [2023-11-19 07:45:47,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:47,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:47,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:47,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:45:47,700 INFO L87 Difference]: Start difference. First operand 1086 states and 1388 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 07:45:47,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:47,785 INFO L93 Difference]: Finished difference Result 1809 states and 2326 transitions. [2023-11-19 07:45:47,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:47,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 87 [2023-11-19 07:45:47,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:47,793 INFO L225 Difference]: With dead ends: 1809 [2023-11-19 07:45:47,793 INFO L226 Difference]: Without dead ends: 964 [2023-11-19 07:45:47,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:45:47,796 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 53 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:47,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 198 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2023-11-19 07:45:47,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 949. [2023-11-19 07:45:47,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 846 states have (on average 1.25177304964539) internal successors, (1059), 861 states have internal predecessors, (1059), 57 states have call successors, (57), 37 states have call predecessors, (57), 45 states have return successors, (92), 50 states have call predecessors, (92), 56 states have call successors, (92) [2023-11-19 07:45:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1208 transitions. [2023-11-19 07:45:47,873 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1208 transitions. Word has length 87 [2023-11-19 07:45:47,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:47,874 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1208 transitions. [2023-11-19 07:45:47,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 07:45:47,874 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1208 transitions. [2023-11-19 07:45:47,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 07:45:47,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:47,883 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:47,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:48,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:45:48,100 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:48,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:48,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1832296466, now seen corresponding path program 1 times [2023-11-19 07:45:48,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:48,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926163376] [2023-11-19 07:45:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:48,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:48,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 07:45:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:45:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:48,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-19 07:45:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-19 07:45:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:48,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-19 07:45:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-19 07:45:48,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:48,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926163376] [2023-11-19 07:45:48,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926163376] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:48,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852085426] [2023-11-19 07:45:48,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:48,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:48,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:48,267 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:48,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:45:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:48,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:45:48,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:45:48,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:48,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852085426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:48,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:45:48,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-19 07:45:48,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706640997] [2023-11-19 07:45:48,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:48,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:48,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:48,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:48,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:45:48,413 INFO L87 Difference]: Start difference. First operand 949 states and 1208 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:45:48,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:48,478 INFO L93 Difference]: Finished difference Result 1328 states and 1676 transitions. [2023-11-19 07:45:48,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:48,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 102 [2023-11-19 07:45:48,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:48,479 INFO L225 Difference]: With dead ends: 1328 [2023-11-19 07:45:48,479 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 07:45:48,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:45:48,486 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 62 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:48,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 206 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 07:45:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 07:45:48,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:48,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:45:48,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2023-11-19 07:45:48,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:48,488 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:45:48,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:45:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:45:48,489 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 07:45:48,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:45:48,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:48,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:45:48,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 07:45:50,350 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 67) no Hoare annotation was computed. [2023-11-19 07:45:50,350 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 51) no Hoare annotation was computed. [2023-11-19 07:45:50,350 INFO L899 garLoopResultBuilder]: For program point immediate_notify_threadsEXIT(lines 76 100) no Hoare annotation was computed. [2023-11-19 07:45:50,351 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 76 100) the Hoare annotation is: (let ((.cse3 (= |old(~p_dw_st~0)| ~p_dw_st~0))) (let ((.cse0 (and .cse3 (= ~c_dr_st~0 |old(~c_dr_st~0)|))) (.cse1 (not (= ~p_last_write~0 ~q_buf_0~0))) (.cse2 (not (= ~q_free~0 0)))) (and (or (not (= ~p_num_write~0 1)) (not (= ~c_dr_pc~0 0)) .cse0 (not (= ~p_dw_pc~0 0)) .cse1 (not (= ~c_num_read~0 0)) .cse2) (or .cse0 .cse1 (not (= ~c_num_read~0 ~p_num_write~0)) (not (= ~q_free~0 1)) (not (= ~c_last_read~0 ~p_last_write~0)) (< |old(~p_dw_st~0)| 2)) (or (not (= 2 |old(~c_dr_st~0)|)) .cse1 .cse2 (and .cse3 (= ~c_dr_st~0 2)) (not (= (+ ~c_num_read~0 1) ~p_num_write~0)))))) [2023-11-19 07:45:50,351 INFO L899 garLoopResultBuilder]: For program point L42-2(lines 42 51) no Hoare annotation was computed. [2023-11-19 07:45:50,351 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2023-11-19 07:45:50,351 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 96) no Hoare annotation was computed. [2023-11-19 07:45:50,351 INFO L899 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2023-11-19 07:45:50,352 INFO L899 garLoopResultBuilder]: For program point L92-2(lines 76 100) no Hoare annotation was computed. [2023-11-19 07:45:50,352 INFO L899 garLoopResultBuilder]: For program point is_do_write_p_triggered_returnLabel#1(lines 38 56) no Hoare annotation was computed. [2023-11-19 07:45:50,352 INFO L899 garLoopResultBuilder]: For program point L53(lines 41 55) no Hoare annotation was computed. [2023-11-19 07:45:50,352 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 88) no Hoare annotation was computed. [2023-11-19 07:45:50,352 INFO L899 garLoopResultBuilder]: For program point L84-2(lines 84 88) no Hoare annotation was computed. [2023-11-19 07:45:50,352 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 48) no Hoare annotation was computed. [2023-11-19 07:45:50,352 INFO L899 garLoopResultBuilder]: For program point L72(lines 60 74) no Hoare annotation was computed. [2023-11-19 07:45:50,352 INFO L899 garLoopResultBuilder]: For program point is_do_read_c_triggered_returnLabel#1(lines 57 75) no Hoare annotation was computed. [2023-11-19 07:45:50,352 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 234) no Hoare annotation was computed. [2023-11-19 07:45:50,353 INFO L899 garLoopResultBuilder]: For program point exists_runnable_threadEXIT(lines 220 239) no Hoare annotation was computed. [2023-11-19 07:45:50,353 INFO L899 garLoopResultBuilder]: For program point L236(lines 223 238) no Hoare annotation was computed. [2023-11-19 07:45:50,353 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 220 239) the Hoare annotation is: true [2023-11-19 07:45:50,353 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 233) no Hoare annotation was computed. [2023-11-19 07:45:50,353 INFO L899 garLoopResultBuilder]: For program point exists_runnable_threadFINAL(lines 220 239) no Hoare annotation was computed. [2023-11-19 07:45:50,353 INFO L895 garLoopResultBuilder]: At program point L192(line 192) the Hoare annotation is: false [2023-11-19 07:45:50,353 INFO L895 garLoopResultBuilder]: At program point L192-1(lines 160 195) the Hoare annotation is: (let ((.cse2 (= ~c_num_read~0 ~p_num_write~0)) (.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse3 (= ~q_free~0 1)) (.cse4 (= ~c_last_read~0 ~p_last_write~0)) (.cse1 (<= 2 ~p_dw_st~0))) (or (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) (= ~q_free~0 0) .cse1) (and .cse2 .cse0 .cse3 (= ~p_dw_st~0 0) .cse4) (and .cse2 .cse0 .cse3 .cse4 .cse1))) [2023-11-19 07:45:50,354 INFO L899 garLoopResultBuilder]: For program point L250(line 250) no Hoare annotation was computed. [2023-11-19 07:45:50,354 INFO L899 garLoopResultBuilder]: For program point L118(lines 117 137) no Hoare annotation was computed. [2023-11-19 07:45:50,354 INFO L895 garLoopResultBuilder]: At program point L300(line 300) the Hoare annotation is: (let ((.cse3 (= ~c_num_read~0 ~p_num_write~0)) (.cse6 (= ~p_dw_st~0 0)) (.cse4 (= ~c_dr_st~0 2)) (.cse1 (= ~q_free~0 0)) (.cse7 (= ~p_dw_pc~0 0)) (.cse8 (= ~p_num_write~0 0)) (.cse9 (= ~c_num_read~0 0)) (.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse5 (= ~q_free~0 1)) (.cse10 (= ~c_dr_pc~0 0)) (.cse11 (= ~c_last_read~0 ~p_last_write~0)) (.cse2 (<= 2 ~p_dw_st~0))) (or (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse1 .cse2) (and .cse3 .cse4 .cse0 .cse5 .cse6) (and .cse3 .cse4 .cse0 .cse5 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse6 .cse10 .cse11) (and .cse4 .cse0 .cse1 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse10 .cse11 .cse2))) [2023-11-19 07:45:50,354 INFO L899 garLoopResultBuilder]: For program point L300-1(line 300) no Hoare annotation was computed. [2023-11-19 07:45:50,354 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 359 370) no Hoare annotation was computed. [2023-11-19 07:45:50,354 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 07:45:50,354 INFO L899 garLoopResultBuilder]: For program point do_write_p_returnLabel#1(lines 101 143) no Hoare annotation was computed. [2023-11-19 07:45:50,354 INFO L899 garLoopResultBuilder]: For program point L152(lines 152 156) no Hoare annotation was computed. [2023-11-19 07:45:50,355 INFO L899 garLoopResultBuilder]: For program point L119(lines 119 127) no Hoare annotation was computed. [2023-11-19 07:45:50,355 INFO L899 garLoopResultBuilder]: For program point start_simulation_returnLabel#1(lines 313 341) no Hoare annotation was computed. [2023-11-19 07:45:50,355 INFO L899 garLoopResultBuilder]: For program point L309(lines 298 311) no Hoare annotation was computed. [2023-11-19 07:45:50,355 INFO L899 garLoopResultBuilder]: For program point L276(lines 276 283) no Hoare annotation was computed. [2023-11-19 07:45:50,355 INFO L899 garLoopResultBuilder]: For program point L161(lines 160 195) no Hoare annotation was computed. [2023-11-19 07:45:50,355 INFO L899 garLoopResultBuilder]: For program point do_read_c_returnLabel#1(lines 145 201) no Hoare annotation was computed. [2023-11-19 07:45:50,355 INFO L899 garLoopResultBuilder]: For program point L252(lines 252 256) no Hoare annotation was computed. [2023-11-19 07:45:50,355 INFO L899 garLoopResultBuilder]: For program point L252-1(lines 247 287) no Hoare annotation was computed. [2023-11-19 07:45:50,355 INFO L899 garLoopResultBuilder]: For program point L211-1(lines 202 219) no Hoare annotation was computed. [2023-11-19 07:45:50,356 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 307) no Hoare annotation was computed. [2023-11-19 07:45:50,356 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 07:45:50,356 INFO L899 garLoopResultBuilder]: For program point L261(lines 261 268) no Hoare annotation was computed. [2023-11-19 07:45:50,356 INFO L899 garLoopResultBuilder]: For program point L162-1(lines 162 172) no Hoare annotation was computed. [2023-11-19 07:45:50,356 INFO L895 garLoopResultBuilder]: At program point L187(line 187) the Hoare annotation is: false [2023-11-19 07:45:50,356 INFO L895 garLoopResultBuilder]: At program point L179(line 179) the Hoare annotation is: (and (= ~c_num_read~0 ~p_num_write~0) (= ~p_last_write~0 ~q_buf_0~0) (= ~q_free~0 1) (= ~c_last_read~0 ~p_last_write~0) (<= 2 ~p_dw_st~0)) [2023-11-19 07:45:50,356 INFO L899 garLoopResultBuilder]: For program point L179-1(line 179) no Hoare annotation was computed. [2023-11-19 07:45:50,356 INFO L899 garLoopResultBuilder]: For program point eval_returnLabel#1(lines 240 293) no Hoare annotation was computed. [2023-11-19 07:45:50,357 INFO L899 garLoopResultBuilder]: For program point L106(lines 106 114) no Hoare annotation was computed. [2023-11-19 07:45:50,357 INFO L899 garLoopResultBuilder]: For program point do_read_c_DR_WAIT_WRITE#1(lines 148 200) no Hoare annotation was computed. [2023-11-19 07:45:50,357 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 07:45:50,357 INFO L895 garLoopResultBuilder]: At program point L272(lines 247 287) the Hoare annotation is: (let ((.cse3 (= ~c_num_read~0 ~p_num_write~0)) (.cse6 (= ~p_dw_st~0 0)) (.cse4 (= ~c_dr_st~0 2)) (.cse1 (= ~q_free~0 0)) (.cse7 (= ~p_dw_pc~0 0)) (.cse8 (= ~p_num_write~0 0)) (.cse9 (= ~c_num_read~0 0)) (.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse5 (= ~q_free~0 1)) (.cse10 (= ~c_dr_pc~0 0)) (.cse11 (= ~c_last_read~0 ~p_last_write~0)) (.cse2 (<= 2 ~p_dw_st~0))) (or (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse1 .cse2) (and .cse3 .cse4 .cse0 .cse5 .cse6) (and .cse3 .cse4 .cse0 .cse5 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse6 .cse10 .cse11) (and .cse4 .cse0 .cse1 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse10 .cse11 .cse2))) [2023-11-19 07:45:50,357 INFO L899 garLoopResultBuilder]: For program point L206(lines 206 210) no Hoare annotation was computed. [2023-11-19 07:45:50,357 INFO L899 garLoopResultBuilder]: For program point L206-2(lines 205 218) no Hoare annotation was computed. [2023-11-19 07:45:50,357 INFO L899 garLoopResultBuilder]: For program point L330(lines 330 334) no Hoare annotation was computed. [2023-11-19 07:45:50,357 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 07:45:50,358 INFO L895 garLoopResultBuilder]: At program point L248(line 248) the Hoare annotation is: (let ((.cse3 (= ~c_num_read~0 ~p_num_write~0)) (.cse6 (= ~p_dw_st~0 0)) (.cse4 (= ~c_dr_st~0 2)) (.cse1 (= ~q_free~0 0)) (.cse7 (= ~p_dw_pc~0 0)) (.cse8 (= ~p_num_write~0 0)) (.cse9 (= ~c_num_read~0 0)) (.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse5 (= ~q_free~0 1)) (.cse10 (= ~c_dr_pc~0 0)) (.cse11 (= ~c_last_read~0 ~p_last_write~0)) (.cse2 (<= 2 ~p_dw_st~0))) (or (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse1 .cse2) (and .cse3 .cse4 .cse0 .cse5 .cse6) (and .cse3 .cse4 .cse0 .cse5 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse6 .cse10 .cse11) (and .cse4 .cse0 .cse1 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse10 .cse11 .cse2))) [2023-11-19 07:45:50,358 INFO L899 garLoopResultBuilder]: For program point L182(lines 182 194) no Hoare annotation was computed. [2023-11-19 07:45:50,358 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 157) no Hoare annotation was computed. [2023-11-19 07:45:50,358 INFO L899 garLoopResultBuilder]: For program point L257(lines 247 287) no Hoare annotation was computed. [2023-11-19 07:45:50,358 INFO L895 garLoopResultBuilder]: At program point L323-2(lines 323 335) the Hoare annotation is: (let ((.cse3 (= ~c_num_read~0 ~p_num_write~0)) (.cse6 (= ~p_dw_st~0 0)) (.cse4 (= ~c_dr_st~0 2)) (.cse1 (= ~q_free~0 0)) (.cse7 (= ~p_dw_pc~0 0)) (.cse8 (= ~p_num_write~0 0)) (.cse9 (= ~c_num_read~0 0)) (.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse5 (= ~q_free~0 1)) (.cse10 (= ~c_dr_pc~0 0)) (.cse11 (= ~c_last_read~0 ~p_last_write~0)) (.cse2 (<= 2 ~p_dw_st~0))) (or (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse1 .cse2) (and .cse3 .cse4 .cse0 .cse5 .cse6) (and .cse3 .cse4 .cse0 .cse5 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse6 .cse10 .cse11) (and .cse4 .cse0 .cse1 .cse2) (and .cse7 .cse8 .cse9 .cse0 .cse5 .cse10 .cse11 .cse2))) [2023-11-19 07:45:50,358 INFO L899 garLoopResultBuilder]: For program point init_model_returnLabel#1(lines 342 358) no Hoare annotation was computed. [2023-11-19 07:45:50,359 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 189) no Hoare annotation was computed. [2023-11-19 07:45:50,359 INFO L895 garLoopResultBuilder]: At program point L117-1(lines 117 137) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse3 (= ~q_free~0 0))) (or (and (= ~c_num_read~0 ~p_num_write~0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3) (and (= ~p_dw_pc~0 0) (= ~p_num_write~0 0) (= ~c_num_read~0 0) .cse1 .cse2 (= ~c_dr_pc~0 0) (= ~c_last_read~0 ~p_last_write~0)) (and .cse1 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse3))) [2023-11-19 07:45:50,359 INFO L899 garLoopResultBuilder]: For program point stop_simulation_returnLabel#1(lines 294 312) no Hoare annotation was computed. [2023-11-19 07:45:50,359 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 113) no Hoare annotation was computed. [2023-11-19 07:45:50,359 INFO L895 garLoopResultBuilder]: At program point L134(line 134) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse1 (= ~q_free~0 0))) (or (and (= ~c_dr_st~0 2) .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse1) (and (= ~p_dw_pc~0 0) (= ~c_num_read~0 0) .cse0 .cse1 (= ~c_dr_pc~0 0) (= ~p_num_write~0 1)))) [2023-11-19 07:45:50,359 INFO L899 garLoopResultBuilder]: For program point L134-1(line 134) no Hoare annotation was computed. [2023-11-19 07:45:50,361 INFO L899 garLoopResultBuilder]: For program point L324(line 324) no Hoare annotation was computed. [2023-11-19 07:45:50,362 INFO L899 garLoopResultBuilder]: For program point errorEXIT(lines 15 22) no Hoare annotation was computed. [2023-11-19 07:45:50,362 INFO L902 garLoopResultBuilder]: At program point ERROR(lines 15 22) the Hoare annotation is: true [2023-11-19 07:45:50,362 INFO L899 garLoopResultBuilder]: For program point errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-19 07:45:50,362 INFO L899 garLoopResultBuilder]: For program point errorFINAL(lines 15 22) no Hoare annotation was computed. [2023-11-19 07:45:50,365 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:50,368 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:45:50,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:45:50 BoogieIcfgContainer [2023-11-19 07:45:50,398 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:45:50,398 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:45:50,398 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:45:50,399 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:45:50,399 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:41" (3/4) ... [2023-11-19 07:45:50,401 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:45:50,406 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure immediate_notify_threads [2023-11-19 07:45:50,406 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure exists_runnable_thread [2023-11-19 07:45:50,406 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure error [2023-11-19 07:45:50,418 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-19 07:45:50,419 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:45:50,419 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:45:50,420 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:45:50,545 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:45:50,545 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:45:50,545 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:45:50,546 INFO L158 Benchmark]: Toolchain (without parser) took 9634.08ms. Allocated memory was 155.2MB in the beginning and 239.1MB in the end (delta: 83.9MB). Free memory was 121.5MB in the beginning and 144.1MB in the end (delta: -22.6MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2023-11-19 07:45:50,546 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 107.0MB. Free memory is still 55.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:45:50,547 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.41ms. Allocated memory is still 155.2MB. Free memory was 121.1MB in the beginning and 108.7MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:45:50,548 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.75ms. Allocated memory is still 155.2MB. Free memory was 108.7MB in the beginning and 107.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:45:50,548 INFO L158 Benchmark]: Boogie Preprocessor took 32.71ms. Allocated memory is still 155.2MB. Free memory was 107.0MB in the beginning and 105.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:45:50,548 INFO L158 Benchmark]: RCFGBuilder took 452.97ms. Allocated memory is still 155.2MB. Free memory was 105.4MB in the beginning and 89.4MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:45:50,549 INFO L158 Benchmark]: TraceAbstraction took 8595.09ms. Allocated memory was 155.2MB in the beginning and 239.1MB in the end (delta: 83.9MB). Free memory was 88.6MB in the beginning and 150.4MB in the end (delta: -61.8MB). Peak memory consumption was 104.3MB. Max. memory is 16.1GB. [2023-11-19 07:45:50,549 INFO L158 Benchmark]: Witness Printer took 147.05ms. Allocated memory is still 239.1MB. Free memory was 150.4MB in the beginning and 144.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:45:50,551 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 107.0MB. Free memory is still 55.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.41ms. Allocated memory is still 155.2MB. Free memory was 121.1MB in the beginning and 108.7MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.75ms. Allocated memory is still 155.2MB. Free memory was 108.7MB in the beginning and 107.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.71ms. Allocated memory is still 155.2MB. Free memory was 107.0MB in the beginning and 105.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 452.97ms. Allocated memory is still 155.2MB. Free memory was 105.4MB in the beginning and 89.4MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8595.09ms. Allocated memory was 155.2MB in the beginning and 239.1MB in the end (delta: 83.9MB). Free memory was 88.6MB in the beginning and 150.4MB in the end (delta: -61.8MB). Peak memory consumption was 104.3MB. Max. memory is 16.1GB. * Witness Printer took 147.05ms. Allocated memory is still 239.1MB. Free memory was 150.4MB in the beginning and 144.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.5s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1205 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1193 mSDsluCounter, 3427 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2232 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 692 IncrementalHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 1195 mSDtfsCounter, 692 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1086occurred in iteration=7, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 1044 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 255 PreInvPairs, 323 NumberOfFragments, 691 HoareAnnotationTreeSize, 255 FomulaSimplifications, 309 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 13 FomulaSimplificationsInter, 3167 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 906 NumberOfCodeBlocks, 906 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1026 ConstructedInterpolants, 0 QuantifiedInterpolants, 1904 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1108 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 270/342 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 323]: Loop Invariant Derived loop invariant: (((((((((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0)) && (2 <= p_dw_st)) || (((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (p_dw_st == 0))) || (((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= p_dw_st))) || ((((((((p_dw_pc == 0) && (p_num_write == 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (p_dw_st == 0)) && (c_dr_pc == 0)) && (c_last_read == p_last_write))) || ((((c_dr_st == 2) && (p_last_write == q_buf_0)) && (q_free == 0)) && (2 <= p_dw_st))) || ((((((((p_dw_pc == 0) && (p_num_write == 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_pc == 0)) && (c_last_read == p_last_write)) && (2 <= p_dw_st))) - InvariantResult [Line: 247]: Loop Invariant Derived loop invariant: (((((((((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0)) && (2 <= p_dw_st)) || (((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (p_dw_st == 0))) || (((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= p_dw_st))) || ((((((((p_dw_pc == 0) && (p_num_write == 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (p_dw_st == 0)) && (c_dr_pc == 0)) && (c_last_read == p_last_write))) || ((((c_dr_st == 2) && (p_last_write == q_buf_0)) && (q_free == 0)) && (2 <= p_dw_st))) || ((((((((p_dw_pc == 0) && (p_num_write == 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_pc == 0)) && (c_last_read == p_last_write)) && (2 <= p_dw_st))) - InvariantResult [Line: 117]: Loop Invariant Derived loop invariant: (((((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) || (((c_dr_st == 2) && (p_last_write == q_buf_0)) && (q_free == 0))) || (((((((p_dw_pc == 0) && (p_num_write == 0)) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_pc == 0)) && (c_last_read == p_last_write))) || (((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0))) - InvariantResult [Line: 160]: Loop Invariant Derived loop invariant: ((((((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0)) && (2 <= p_dw_st)) || (((((c_num_read == p_num_write) && (p_last_write == q_buf_0)) && (q_free == 1)) && (p_dw_st == 0)) && (c_last_read == p_last_write))) || (((((c_num_read == p_num_write) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_last_read == p_last_write)) && (2 <= p_dw_st))) RESULT: Ultimate proved your program to be correct! [2023-11-19 07:45:50,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78617d5-a169-4417-9554-bd708b5bcfa7/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE