./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_io_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_io_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx --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 4f9f01bde8fda2c75630f127009f2a9b60883250862a9d96b52c34a46b69c1e5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:21:12,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:21:12,974 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:21:12,986 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:21:12,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:21:13,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:21:13,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:21:13,043 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:21:13,044 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:21:13,050 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:21:13,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:21:13,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:21:13,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:21:13,056 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:21:13,057 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:21:13,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:21:13,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:21:13,059 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:21:13,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:21:13,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:21:13,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:21:13,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:21:13,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:21:13,063 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:21:13,064 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:21:13,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:21:13,065 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:21:13,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:21:13,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:21:13,068 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:21:13,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:21:13,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:13,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:21:13,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:21:13,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:21:13,072 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:21:13,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:21:13,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:21:13,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:21:13,073 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:21:13,074 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:21:13,074 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:21:13,075 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_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f9f01bde8fda2c75630f127009f2a9b60883250862a9d96b52c34a46b69c1e5 [2023-11-21 22:21:13,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:21:13,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:21:13,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:21:13,500 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:21:13,501 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:21:13,502 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/psyco/psyco_io_1.c [2023-11-21 22:21:17,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:21:17,444 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:21:17,445 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/sv-benchmarks/c/psyco/psyco_io_1.c [2023-11-21 22:21:17,459 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/data/a70601d79/d2e3d6af583e46c69acaed1210c19782/FLAG28b04a328 [2023-11-21 22:21:17,476 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/data/a70601d79/d2e3d6af583e46c69acaed1210c19782 [2023-11-21 22:21:17,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:21:17,482 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:21:17,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:17,484 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:21:17,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:21:17,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b03198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17, skipping insertion in model container [2023-11-21 22:21:17,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,538 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:21:17,774 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_724c7019-9b4c-4707-9a9c-2a0d4225eddb/sv-benchmarks/c/psyco/psyco_io_1.c[11478,11491] [2023-11-21 22:21:17,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:17,797 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:21:17,840 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_724c7019-9b4c-4707-9a9c-2a0d4225eddb/sv-benchmarks/c/psyco/psyco_io_1.c[11478,11491] [2023-11-21 22:21:17,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:17,862 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:21:17,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17 WrapperNode [2023-11-21 22:21:17,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:17,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:17,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:21:17,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:21:17,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,924 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 280 [2023-11-21 22:21:17,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:17,926 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:21:17,926 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:21:17,926 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:21:17,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,945 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,960 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:21:17,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,969 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,980 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,982 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,986 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:21:17,988 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:21:17,988 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:21:17,988 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:21:17,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17" (1/1) ... [2023-11-21 22:21:17,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:18,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:18,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:21:18,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:21:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:21:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:21:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:21:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:21:18,200 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:21:18,203 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:21:18,800 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:21:18,861 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:21:18,863 INFO L308 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-21 22:21:18,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:18 BoogieIcfgContainer [2023-11-21 22:21:18,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:21:18,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:21:18,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:21:18,878 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:21:18,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:21:17" (1/3) ... [2023-11-21 22:21:18,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125678ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:18, skipping insertion in model container [2023-11-21 22:21:18,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:17" (2/3) ... [2023-11-21 22:21:18,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125678ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:18, skipping insertion in model container [2023-11-21 22:21:18,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:18" (3/3) ... [2023-11-21 22:21:18,884 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2023-11-21 22:21:18,907 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:21:18,907 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:21:18,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:21:18,988 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;@9438c1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:21:18,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:21:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 64 states have (on average 1.953125) internal successors, (125), 65 states have internal predecessors, (125), 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) [2023-11-21 22:21:19,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 22:21:19,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:19,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:19,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:19,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:19,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1580809744, now seen corresponding path program 1 times [2023-11-21 22:21:19,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:19,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061673380] [2023-11-21 22:21:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:19,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:19,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:19,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061673380] [2023-11-21 22:21:19,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061673380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:19,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:19,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:21:19,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779770377] [2023-11-21 22:21:19,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:19,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 22:21:19,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:19,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 22:21:19,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:21:19,281 INFO L87 Difference]: Start difference. First operand has 66 states, 64 states have (on average 1.953125) internal successors, (125), 65 states have internal predecessors, (125), 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-21 22:21:19,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:19,328 INFO L93 Difference]: Finished difference Result 127 states and 241 transitions. [2023-11-21 22:21:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 22:21:19,332 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) Word has length 8 [2023-11-21 22:21:19,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:19,347 INFO L225 Difference]: With dead ends: 127 [2023-11-21 22:21:19,347 INFO L226 Difference]: Without dead ends: 56 [2023-11-21 22:21:19,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:21:19,360 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:19,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:21:19,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-21 22:21:19,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-21 22:21:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.5636363636363637) internal successors, (86), 55 states have internal predecessors, (86), 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) [2023-11-21 22:21:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2023-11-21 22:21:19,422 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 8 [2023-11-21 22:21:19,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:19,423 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2023-11-21 22:21:19,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-21 22:21:19,424 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2023-11-21 22:21:19,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 22:21:19,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:19,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:19,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:21:19,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:19,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:19,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2002012032, now seen corresponding path program 1 times [2023-11-21 22:21:19,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:19,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684298203] [2023-11-21 22:21:19,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:19,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:19,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:19,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684298203] [2023-11-21 22:21:19,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684298203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:19,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:19,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:21:19,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765743718] [2023-11-21 22:21:19,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:19,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:19,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:19,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:19,559 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-21 22:21:19,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:19,601 INFO L93 Difference]: Finished difference Result 114 states and 175 transitions. [2023-11-21 22:21:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:19,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2023-11-21 22:21:19,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:19,604 INFO L225 Difference]: With dead ends: 114 [2023-11-21 22:21:19,604 INFO L226 Difference]: Without dead ends: 59 [2023-11-21 22:21:19,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:19,607 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 4 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:19,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 151 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:21:19,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-21 22:21:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-21 22:21:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 58 states have internal predecessors, (89), 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) [2023-11-21 22:21:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 89 transitions. [2023-11-21 22:21:19,619 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 89 transitions. Word has length 9 [2023-11-21 22:21:19,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:19,620 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 89 transitions. [2023-11-21 22:21:19,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-21 22:21:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 89 transitions. [2023-11-21 22:21:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 22:21:19,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:19,624 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:19,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:21:19,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:19,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1199968781, now seen corresponding path program 1 times [2023-11-21 22:21:19,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:19,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674937307] [2023-11-21 22:21:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:19,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:19,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:19,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674937307] [2023-11-21 22:21:19,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674937307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:19,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:19,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:19,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56256912] [2023-11-21 22:21:19,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:19,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:19,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:19,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:19,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:19,793 INFO L87 Difference]: Start difference. First operand 59 states and 89 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-21 22:21:19,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:19,844 INFO L93 Difference]: Finished difference Result 122 states and 184 transitions. [2023-11-21 22:21:19,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:19,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 14 [2023-11-21 22:21:19,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:19,847 INFO L225 Difference]: With dead ends: 122 [2023-11-21 22:21:19,848 INFO L226 Difference]: Without dead ends: 65 [2023-11-21 22:21:19,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:19,851 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 29 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:19,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 127 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:21:19,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-21 22:21:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2023-11-21 22:21:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.5) internal successors, (93), 62 states have internal predecessors, (93), 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) [2023-11-21 22:21:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 93 transitions. [2023-11-21 22:21:19,863 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 93 transitions. Word has length 14 [2023-11-21 22:21:19,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:19,863 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 93 transitions. [2023-11-21 22:21:19,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-21 22:21:19,864 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 93 transitions. [2023-11-21 22:21:19,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 22:21:19,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:19,866 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:19,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:21:19,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:19,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:19,868 INFO L85 PathProgramCache]: Analyzing trace with hash 60815211, now seen corresponding path program 1 times [2023-11-21 22:21:19,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:19,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685931557] [2023-11-21 22:21:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:19,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:19,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:19,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685931557] [2023-11-21 22:21:19,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685931557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:19,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:19,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:19,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855297283] [2023-11-21 22:21:19,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:19,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:19,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:19,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:19,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:19,948 INFO L87 Difference]: Start difference. First operand 63 states and 93 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-21 22:21:20,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:20,021 INFO L93 Difference]: Finished difference Result 181 states and 271 transitions. [2023-11-21 22:21:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:20,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) Word has length 19 [2023-11-21 22:21:20,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:20,025 INFO L225 Difference]: With dead ends: 181 [2023-11-21 22:21:20,025 INFO L226 Difference]: Without dead ends: 116 [2023-11-21 22:21:20,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:20,029 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 56 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:20,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 181 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:21:20,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-21 22:21:20,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2023-11-21 22:21:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.5) internal successors, (159), 106 states have internal predecessors, (159), 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) [2023-11-21 22:21:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 159 transitions. [2023-11-21 22:21:20,045 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 159 transitions. Word has length 19 [2023-11-21 22:21:20,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:20,046 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 159 transitions. [2023-11-21 22:21:20,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-21 22:21:20,047 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 159 transitions. [2023-11-21 22:21:20,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-21 22:21:20,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:20,049 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:20,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:21:20,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:20,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:20,051 INFO L85 PathProgramCache]: Analyzing trace with hash 33519891, now seen corresponding path program 1 times [2023-11-21 22:21:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:20,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916075703] [2023-11-21 22:21:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:20,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:21:20,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:20,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916075703] [2023-11-21 22:21:20,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916075703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:20,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:20,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:20,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438313891] [2023-11-21 22:21:20,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:20,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:20,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:20,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:20,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:20,163 INFO L87 Difference]: Start difference. First operand 107 states and 159 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-21 22:21:20,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:20,198 INFO L93 Difference]: Finished difference Result 175 states and 261 transitions. [2023-11-21 22:21:20,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:20,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) Word has length 26 [2023-11-21 22:21:20,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:20,201 INFO L225 Difference]: With dead ends: 175 [2023-11-21 22:21:20,201 INFO L226 Difference]: Without dead ends: 70 [2023-11-21 22:21:20,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:20,204 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 30 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:20,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 87 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:21:20,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-21 22:21:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-21 22:21:20,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 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) [2023-11-21 22:21:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2023-11-21 22:21:20,215 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 26 [2023-11-21 22:21:20,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:20,216 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2023-11-21 22:21:20,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-21 22:21:20,217 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2023-11-21 22:21:20,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-21 22:21:20,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:20,219 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-21 22:21:20,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:21:20,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:20,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:20,221 INFO L85 PathProgramCache]: Analyzing trace with hash -400822240, now seen corresponding path program 1 times [2023-11-21 22:21:20,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:20,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798243665] [2023-11-21 22:21:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:20,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:21:20,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:20,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798243665] [2023-11-21 22:21:20,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798243665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:20,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:20,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:21:20,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113977715] [2023-11-21 22:21:20,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:20,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:21:20,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:20,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:21:20,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:21:20,372 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-21 22:21:20,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:20,444 INFO L93 Difference]: Finished difference Result 73 states and 99 transitions. [2023-11-21 22:21:20,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:21:20,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) Word has length 32 [2023-11-21 22:21:20,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:20,447 INFO L225 Difference]: With dead ends: 73 [2023-11-21 22:21:20,450 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 22:21:20,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:21:20,454 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 17 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:20,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 131 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:21:20,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 22:21:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 22:21:20,457 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) [2023-11-21 22:21:20,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 22:21:20,457 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2023-11-21 22:21:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:20,457 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 22:21:20,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-21 22:21:20,458 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 22:21:20,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 22:21:20,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 22:21:20,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:21:20,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 22:21:20,487 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 51) no Hoare annotation was computed. [2023-11-21 22:21:20,487 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 49) no Hoare annotation was computed. [2023-11-21 22:21:20,488 INFO L899 garLoopResultBuilder]: For program point L88(lines 88 103) no Hoare annotation was computed. [2023-11-21 22:21:20,488 INFO L899 garLoopResultBuilder]: For program point L55(lines 55 106) no Hoare annotation was computed. [2023-11-21 22:21:20,488 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 219) no Hoare annotation was computed. [2023-11-21 22:21:20,489 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 87) no Hoare annotation was computed. [2023-11-21 22:21:20,490 INFO L899 garLoopResultBuilder]: For program point L320(lines 320 335) no Hoare annotation was computed. [2023-11-21 22:21:20,490 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 203) no Hoare annotation was computed. [2023-11-21 22:21:20,491 INFO L899 garLoopResultBuilder]: For program point L56(lines 56 71) no Hoare annotation was computed. [2023-11-21 22:21:20,492 INFO L899 garLoopResultBuilder]: For program point L304(lines 304 319) no Hoare annotation was computed. [2023-11-21 22:21:20,492 INFO L899 garLoopResultBuilder]: For program point L172(lines 172 187) no Hoare annotation was computed. [2023-11-21 22:21:20,492 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 303) no Hoare annotation was computed. [2023-11-21 22:21:20,492 INFO L899 garLoopResultBuilder]: For program point L156(lines 156 171) no Hoare annotation was computed. [2023-11-21 22:21:20,492 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 101) no Hoare annotation was computed. [2023-11-21 22:21:20,493 INFO L899 garLoopResultBuilder]: For program point L272(lines 272 287) no Hoare annotation was computed. [2023-11-21 22:21:20,493 INFO L899 garLoopResultBuilder]: For program point L206(lines 206 217) no Hoare annotation was computed. [2023-11-21 22:21:20,493 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 155) no Hoare annotation was computed. [2023-11-21 22:21:20,493 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 222) no Hoare annotation was computed. [2023-11-21 22:21:20,493 INFO L899 garLoopResultBuilder]: For program point L74(lines 74 85) no Hoare annotation was computed. [2023-11-21 22:21:20,494 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 333) no Hoare annotation was computed. [2023-11-21 22:21:20,494 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 22:21:20,494 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 271) no Hoare annotation was computed. [2023-11-21 22:21:20,494 INFO L899 garLoopResultBuilder]: For program point L223(lines 223 338) no Hoare annotation was computed. [2023-11-21 22:21:20,495 INFO L899 garLoopResultBuilder]: For program point L190(lines 190 201) no Hoare annotation was computed. [2023-11-21 22:21:20,495 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 139) no Hoare annotation was computed. [2023-11-21 22:21:20,495 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 69) no Hoare annotation was computed. [2023-11-21 22:21:20,495 INFO L895 garLoopResultBuilder]: At program point L25-2(lines 25 341) the Hoare annotation is: (and (= |ULTIMATE.start_main_~this_sink~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0)) [2023-11-21 22:21:20,496 INFO L899 garLoopResultBuilder]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2023-11-21 22:21:20,496 INFO L899 garLoopResultBuilder]: For program point L306(lines 306 317) no Hoare annotation was computed. [2023-11-21 22:21:20,496 INFO L899 garLoopResultBuilder]: For program point L240(lines 240 255) no Hoare annotation was computed. [2023-11-21 22:21:20,496 INFO L899 garLoopResultBuilder]: For program point L174(lines 174 185) no Hoare annotation was computed. [2023-11-21 22:21:20,496 INFO L899 garLoopResultBuilder]: For program point L108(lines 108 123) no Hoare annotation was computed. [2023-11-21 22:21:20,497 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 44) no Hoare annotation was computed. [2023-11-21 22:21:20,497 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 301) no Hoare annotation was computed. [2023-11-21 22:21:20,497 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 239) no Hoare annotation was computed. [2023-11-21 22:21:20,497 INFO L899 garLoopResultBuilder]: For program point L290-2(lines 25 341) no Hoare annotation was computed. [2023-11-21 22:21:20,497 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 169) no Hoare annotation was computed. [2023-11-21 22:21:20,498 INFO L899 garLoopResultBuilder]: For program point L274(lines 274 285) no Hoare annotation was computed. [2023-11-21 22:21:20,499 INFO L899 garLoopResultBuilder]: For program point L142(lines 142 153) no Hoare annotation was computed. [2023-11-21 22:21:20,499 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 269) no Hoare annotation was computed. [2023-11-21 22:21:20,499 INFO L899 garLoopResultBuilder]: For program point L126(lines 126 137) no Hoare annotation was computed. [2023-11-21 22:21:20,499 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 253) no Hoare annotation was computed. [2023-11-21 22:21:20,499 INFO L899 garLoopResultBuilder]: For program point L110(lines 110 121) no Hoare annotation was computed. [2023-11-21 22:21:20,500 INFO L899 garLoopResultBuilder]: For program point L226(lines 226 237) no Hoare annotation was computed. [2023-11-21 22:21:20,500 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 96) no Hoare annotation was computed. [2023-11-21 22:21:20,500 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 212) no Hoare annotation was computed. [2023-11-21 22:21:20,500 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2023-11-21 22:21:20,500 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 328) no Hoare annotation was computed. [2023-11-21 22:21:20,502 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 196) no Hoare annotation was computed. [2023-11-21 22:21:20,502 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 64) no Hoare annotation was computed. [2023-11-21 22:21:20,502 INFO L899 garLoopResultBuilder]: For program point L310(lines 310 312) no Hoare annotation was computed. [2023-11-21 22:21:20,502 INFO L899 garLoopResultBuilder]: For program point L178(lines 178 180) no Hoare annotation was computed. [2023-11-21 22:21:20,503 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 22:21:20,503 INFO L899 garLoopResultBuilder]: For program point L294(lines 294 296) no Hoare annotation was computed. [2023-11-21 22:21:20,503 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 164) no Hoare annotation was computed. [2023-11-21 22:21:20,503 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 280) no Hoare annotation was computed. [2023-11-21 22:21:20,503 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 148) no Hoare annotation was computed. [2023-11-21 22:21:20,504 INFO L899 garLoopResultBuilder]: For program point L262(lines 262 264) no Hoare annotation was computed. [2023-11-21 22:21:20,504 INFO L899 garLoopResultBuilder]: For program point L130(lines 130 132) no Hoare annotation was computed. [2023-11-21 22:21:20,504 INFO L899 garLoopResultBuilder]: For program point L246(lines 246 248) no Hoare annotation was computed. [2023-11-21 22:21:20,505 INFO L899 garLoopResultBuilder]: For program point L114(lines 114 116) no Hoare annotation was computed. [2023-11-21 22:21:20,505 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 346) no Hoare annotation was computed. [2023-11-21 22:21:20,505 INFO L899 garLoopResultBuilder]: For program point L230(lines 230 232) no Hoare annotation was computed. [2023-11-21 22:21:20,506 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2023-11-21 22:21:20,506 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 15 346) no Hoare annotation was computed. [2023-11-21 22:21:20,507 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 54) no Hoare annotation was computed. [2023-11-21 22:21:20,510 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-21 22:21:20,513 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:21:20,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:21:20 BoogieIcfgContainer [2023-11-21 22:21:20,535 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:21:20,536 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:21:20,537 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:21:20,537 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:21:20,538 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:18" (3/4) ... [2023-11-21 22:21:20,541 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:21:20,554 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-21 22:21:20,555 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-21 22:21:20,556 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 22:21:20,557 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 22:21:20,729 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:21:20,730 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:21:20,730 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:21:20,731 INFO L158 Benchmark]: Toolchain (without parser) took 3249.44ms. Allocated memory was 153.1MB in the beginning and 218.1MB in the end (delta: 65.0MB). Free memory was 107.0MB in the beginning and 172.3MB in the end (delta: -65.3MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2023-11-21 22:21:20,731 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 100.7MB. Free memory is still 53.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:21:20,732 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.15ms. Allocated memory is still 153.1MB. Free memory was 107.0MB in the beginning and 94.4MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 22:21:20,732 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.37ms. Allocated memory is still 153.1MB. Free memory was 94.4MB in the beginning and 92.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:21:20,733 INFO L158 Benchmark]: Boogie Preprocessor took 61.16ms. Allocated memory is still 153.1MB. Free memory was 92.3MB in the beginning and 90.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:21:20,733 INFO L158 Benchmark]: RCFGBuilder took 879.04ms. Allocated memory was 153.1MB in the beginning and 218.1MB in the end (delta: 65.0MB). Free memory was 89.9MB in the beginning and 186.6MB in the end (delta: -96.7MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2023-11-21 22:21:20,734 INFO L158 Benchmark]: TraceAbstraction took 1661.57ms. Allocated memory is still 218.1MB. Free memory was 185.5MB in the beginning and 179.6MB in the end (delta: 5.9MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2023-11-21 22:21:20,734 INFO L158 Benchmark]: Witness Printer took 194.37ms. Allocated memory is still 218.1MB. Free memory was 179.6MB in the beginning and 172.3MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 22:21:20,737 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 100.7MB. Free memory is still 53.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 380.15ms. Allocated memory is still 153.1MB. Free memory was 107.0MB in the beginning and 94.4MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.37ms. Allocated memory is still 153.1MB. Free memory was 94.4MB in the beginning and 92.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.16ms. Allocated memory is still 153.1MB. Free memory was 92.3MB in the beginning and 90.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 879.04ms. Allocated memory was 153.1MB in the beginning and 218.1MB in the end (delta: 65.0MB). Free memory was 89.9MB in the beginning and 186.6MB in the end (delta: -96.7MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1661.57ms. Allocated memory is still 218.1MB. Free memory was 185.5MB in the beginning and 179.6MB in the end (delta: 5.9MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Witness Printer took 194.37ms. Allocated memory is still 218.1MB. Free memory was 179.6MB in the beginning and 172.3MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. 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: 345]: 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 1 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 773 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 275 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 498 mSDtfsCounter, 89 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 7 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 181 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 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: 25]: Loop Invariant Derived loop invariant: ((this_sink == 0) && (q == 0)) RESULT: Ultimate proved your program to be correct! [2023-11-21 22:21:20,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724c7019-9b4c-4707-9a9c-2a0d4225eddb/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE