./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/kundu1.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/kundu1.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c114a15ea6b1c9b012290758a6a9559b9c02a944706c9768958a3bd9c86822a7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:59:54,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:59:54,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:59:54,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:59:54,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:59:54,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:59:54,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:59:54,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:59:54,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:59:54,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:59:54,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:59:54,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:59:54,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:59:54,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:59:54,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:59:54,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:59:54,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:59:54,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:59:54,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:59:54,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:59:54,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:59:54,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:59:54,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:59:54,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:59:54,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:59:54,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:59:54,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:59:54,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:59:54,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:59:54,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:59:54,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:59:54,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:59:54,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:59:54,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:59:54,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:59:54,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:59:54,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:59:54,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:59:55,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:59:55,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:59:55,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:59:55,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:59:55,052 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:59:55,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:59:55,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:59:55,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:59:55,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:59:55,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:59:55,055 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:59:55,055 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:59:55,055 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:59:55,055 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:59:55,056 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:59:55,057 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:59:55,057 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:59:55,057 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:59:55,058 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:59:55,058 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:59:55,058 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:59:55,058 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:59:55,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:59:55,059 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:59:55,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:59:55,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:59:55,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:59:55,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:59:55,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:59:55,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:59:55,061 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:59:55,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:59:55,062 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:59:55,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:59:55,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:59:55,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:59:55,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:59:55,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:59:55,064 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:59:55,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:59:55,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:59:55,064 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:59:55,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:59:55,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:59:55,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:59:55,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c114a15ea6b1c9b012290758a6a9559b9c02a944706c9768958a3bd9c86822a7 [2022-11-23 15:59:55,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:59:55,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:59:55,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:59:55,473 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:59:55,474 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:59:55,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/systemc/kundu1.cil.c [2022-11-23 15:59:58,581 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:59:58,849 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:59:58,850 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/sv-benchmarks/c/systemc/kundu1.cil.c [2022-11-23 15:59:58,864 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/data/1a1ae8f69/2dc5026c1ce64ee3995607f5aa19b361/FLAG8d5b70ead [2022-11-23 15:59:58,880 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/data/1a1ae8f69/2dc5026c1ce64ee3995607f5aa19b361 [2022-11-23 15:59:58,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:59:58,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:59:58,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:59:58,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:59:58,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:59:58,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:58" (1/1) ... [2022-11-23 15:59:58,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125c8305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:58, skipping insertion in model container [2022-11-23 15:59:58,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:58" (1/1) ... [2022-11-23 15:59:58,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:59:58,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:59:59,139 WARN L237 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_35b600a8-d9c2-4f2c-96e7-3d590fabee88/sv-benchmarks/c/systemc/kundu1.cil.c[636,649] [2022-11-23 15:59:59,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:59:59,214 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:59:59,225 WARN L237 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_35b600a8-d9c2-4f2c-96e7-3d590fabee88/sv-benchmarks/c/systemc/kundu1.cil.c[636,649] [2022-11-23 15:59:59,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:59:59,269 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:59:59,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:59 WrapperNode [2022-11-23 15:59:59,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:59:59,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:59:59,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:59:59,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:59:59,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:59" (1/1) ... [2022-11-23 15:59:59,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:59" (1/1) ... [2022-11-23 15:59:59,318 INFO L138 Inliner]: procedures = 32, calls = 36, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 257 [2022-11-23 15:59:59,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:59:59,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:59:59,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:59:59,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:59:59,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:59" (1/1) ... [2022-11-23 15:59:59,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:59" (1/1) ... [2022-11-23 15:59:59,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:59" (1/1) ... [2022-11-23 15:59:59,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:59" (1/1) ... [2022-11-23 15:59:59,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:59" (1/1) ... [2022-11-23 15:59:59,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:59" (1/1) ... [2022-11-23 15:59:59,347 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:59" (1/1) ... [2022-11-23 15:59:59,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:59" (1/1) ... [2022-11-23 15:59:59,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:59:59,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:59:59,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:59:59,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:59:59,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:59" (1/1) ... [2022-11-23 15:59:59,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:59:59,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:59,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:59:59,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:59:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:59:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-23 15:59:59,437 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-23 15:59:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-23 15:59:59,438 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-23 15:59:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-23 15:59:59,438 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-23 15:59:59,438 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-23 15:59:59,438 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-23 15:59:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-23 15:59:59,439 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-23 15:59:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:59:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-23 15:59:59,440 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-23 15:59:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:59:59,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:59:59,535 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:59:59,538 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:00:00,072 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:00:00,217 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:00:00,217 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 16:00:00,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:00:00 BoogieIcfgContainer [2022-11-23 16:00:00,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:00:00,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:00:00,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:00:00,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:00:00,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:59:58" (1/3) ... [2022-11-23 16:00:00,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dcff6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:00:00, skipping insertion in model container [2022-11-23 16:00:00,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:59" (2/3) ... [2022-11-23 16:00:00,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dcff6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:00:00, skipping insertion in model container [2022-11-23 16:00:00,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:00:00" (3/3) ... [2022-11-23 16:00:00,242 INFO L112 eAbstractionObserver]: Analyzing ICFG kundu1.cil.c [2022-11-23 16:00:00,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:00:00,265 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:00:00,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:00:00,328 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@674cfb56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:00:00,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:00:00,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 52 states have (on average 1.5) internal successors, (78), 56 states have internal predecessors, (78), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 16:00:00,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 16:00:00,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:00,342 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] [2022-11-23 16:00:00,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:00,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:00,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1624735659, now seen corresponding path program 1 times [2022-11-23 16:00:00,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:00,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968655399] [2022-11-23 16:00:00,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:00,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:00,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:00,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968655399] [2022-11-23 16:00:00,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968655399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:00,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:00,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:00:00,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865675331] [2022-11-23 16:00:00,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:00,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:00:00,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:00,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:00:00,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:00,823 INFO L87 Difference]: Start difference. First operand has 75 states, 52 states have (on average 1.5) internal successors, (78), 56 states have internal predecessors, (78), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 16:00:01,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:01,127 INFO L93 Difference]: Finished difference Result 209 states and 305 transitions. [2022-11-23 16:00:01,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:00:01,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-11-23 16:00:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:01,140 INFO L225 Difference]: With dead ends: 209 [2022-11-23 16:00:01,141 INFO L226 Difference]: Without dead ends: 135 [2022-11-23 16:00:01,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:01,148 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 177 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:01,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 264 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:00:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-23 16:00:01,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 127. [2022-11-23 16:00:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 96 states have internal predecessors, (133), 23 states have call successors, (23), 11 states have call predecessors, (23), 10 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-23 16:00:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 176 transitions. [2022-11-23 16:00:01,209 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 176 transitions. Word has length 34 [2022-11-23 16:00:01,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:01,210 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 176 transitions. [2022-11-23 16:00:01,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 16:00:01,211 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 176 transitions. [2022-11-23 16:00:01,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 16:00:01,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:01,213 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] [2022-11-23 16:00:01,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:00:01,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:01,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:01,215 INFO L85 PathProgramCache]: Analyzing trace with hash 34340682, now seen corresponding path program 1 times [2022-11-23 16:00:01,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:01,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80592159] [2022-11-23 16:00:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:01,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:01,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:01,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80592159] [2022-11-23 16:00:01,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80592159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:01,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:01,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:00:01,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612856266] [2022-11-23 16:00:01,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:01,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:00:01,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:01,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:00:01,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:01,334 INFO L87 Difference]: Start difference. First operand 127 states and 176 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 16:00:01,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:01,614 INFO L93 Difference]: Finished difference Result 366 states and 507 transitions. [2022-11-23 16:00:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:00:01,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-11-23 16:00:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:01,622 INFO L225 Difference]: With dead ends: 366 [2022-11-23 16:00:01,622 INFO L226 Difference]: Without dead ends: 244 [2022-11-23 16:00:01,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:01,625 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 169 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:01,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 236 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:00:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-23 16:00:01,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 225. [2022-11-23 16:00:01,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 165 states have (on average 1.3636363636363635) internal successors, (225), 168 states have internal predecessors, (225), 39 states have call successors, (39), 21 states have call predecessors, (39), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-23 16:00:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 300 transitions. [2022-11-23 16:00:01,694 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 300 transitions. Word has length 34 [2022-11-23 16:00:01,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:01,695 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 300 transitions. [2022-11-23 16:00:01,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 16:00:01,698 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 300 transitions. [2022-11-23 16:00:01,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-23 16:00:01,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:01,699 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] [2022-11-23 16:00:01,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:00:01,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:01,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:01,702 INFO L85 PathProgramCache]: Analyzing trace with hash -28804500, now seen corresponding path program 1 times [2022-11-23 16:00:01,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:01,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112988293] [2022-11-23 16:00:01,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:01,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:01,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:01,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112988293] [2022-11-23 16:00:01,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112988293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:01,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:01,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:00:01,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986490523] [2022-11-23 16:00:01,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:01,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:00:01,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:01,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:00:01,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:01,986 INFO L87 Difference]: Start difference. First operand 225 states and 300 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 16:00:02,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:02,248 INFO L93 Difference]: Finished difference Result 607 states and 835 transitions. [2022-11-23 16:00:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:00:02,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2022-11-23 16:00:02,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:02,257 INFO L225 Difference]: With dead ends: 607 [2022-11-23 16:00:02,257 INFO L226 Difference]: Without dead ends: 435 [2022-11-23 16:00:02,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:00:02,270 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 129 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:02,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 335 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-23 16:00:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 328. [2022-11-23 16:00:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 242 states have (on average 1.3636363636363635) internal successors, (330), 245 states have internal predecessors, (330), 55 states have call successors, (55), 31 states have call predecessors, (55), 30 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-23 16:00:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 437 transitions. [2022-11-23 16:00:02,366 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 437 transitions. Word has length 35 [2022-11-23 16:00:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:02,367 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 437 transitions. [2022-11-23 16:00:02,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 16:00:02,368 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 437 transitions. [2022-11-23 16:00:02,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-23 16:00:02,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:02,370 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] [2022-11-23 16:00:02,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:00:02,371 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:02,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:02,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1374328358, now seen corresponding path program 1 times [2022-11-23 16:00:02,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:02,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672296677] [2022-11-23 16:00:02,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:02,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:02,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:02,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672296677] [2022-11-23 16:00:02,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672296677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:02,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:02,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:00:02,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482450664] [2022-11-23 16:00:02,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:02,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:00:02,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:02,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:00:02,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:02,483 INFO L87 Difference]: Start difference. First operand 328 states and 437 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 16:00:02,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:02,701 INFO L93 Difference]: Finished difference Result 509 states and 680 transitions. [2022-11-23 16:00:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:00:02,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2022-11-23 16:00:02,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:02,709 INFO L225 Difference]: With dead ends: 509 [2022-11-23 16:00:02,709 INFO L226 Difference]: Without dead ends: 392 [2022-11-23 16:00:02,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:02,720 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 150 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:02,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 184 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:02,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-23 16:00:02,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 383. [2022-11-23 16:00:02,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 284 states have (on average 1.3626760563380282) internal successors, (387), 287 states have internal predecessors, (387), 63 states have call successors, (63), 36 states have call predecessors, (63), 35 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-23 16:00:02,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 510 transitions. [2022-11-23 16:00:02,800 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 510 transitions. Word has length 43 [2022-11-23 16:00:02,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:02,800 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 510 transitions. [2022-11-23 16:00:02,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 16:00:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 510 transitions. [2022-11-23 16:00:02,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 16:00:02,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:02,810 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, 1, 1] [2022-11-23 16:00:02,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:00:02,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:02,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:02,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1322400223, now seen corresponding path program 1 times [2022-11-23 16:00:02,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:02,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953873849] [2022-11-23 16:00:02,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:02,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:03,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:03,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953873849] [2022-11-23 16:00:03,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953873849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:03,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:03,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 16:00:03,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493666685] [2022-11-23 16:00:03,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:03,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:00:03,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:03,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:00:03,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 16:00:03,040 INFO L87 Difference]: Start difference. First operand 383 states and 510 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 16:00:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:03,570 INFO L93 Difference]: Finished difference Result 1013 states and 1383 transitions. [2022-11-23 16:00:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 16:00:03,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-11-23 16:00:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:03,580 INFO L225 Difference]: With dead ends: 1013 [2022-11-23 16:00:03,580 INFO L226 Difference]: Without dead ends: 735 [2022-11-23 16:00:03,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-23 16:00:03,587 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 267 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:03,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 616 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:00:03,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-11-23 16:00:03,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 539. [2022-11-23 16:00:03,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 401 states have (on average 1.3591022443890275) internal successors, (545), 404 states have internal predecessors, (545), 87 states have call successors, (87), 51 states have call predecessors, (87), 50 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-23 16:00:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 716 transitions. [2022-11-23 16:00:03,699 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 716 transitions. Word has length 46 [2022-11-23 16:00:03,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:03,700 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 716 transitions. [2022-11-23 16:00:03,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 16:00:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 716 transitions. [2022-11-23 16:00:03,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-23 16:00:03,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:03,706 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 16:00:03,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:00:03,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:03,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:03,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1133597288, now seen corresponding path program 1 times [2022-11-23 16:00:03,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:03,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455825049] [2022-11-23 16:00:03,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:03,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:03,914 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 16:00:03,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:03,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455825049] [2022-11-23 16:00:03,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455825049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:03,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:03,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 16:00:03,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675804279] [2022-11-23 16:00:03,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:03,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:00:03,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:03,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:00:03,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 16:00:03,917 INFO L87 Difference]: Start difference. First operand 539 states and 716 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-23 16:00:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:04,324 INFO L93 Difference]: Finished difference Result 1556 states and 2057 transitions. [2022-11-23 16:00:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 16:00:04,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2022-11-23 16:00:04,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:04,332 INFO L225 Difference]: With dead ends: 1556 [2022-11-23 16:00:04,332 INFO L226 Difference]: Without dead ends: 1023 [2022-11-23 16:00:04,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 16:00:04,335 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 182 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:04,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 212 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:00:04,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2022-11-23 16:00:04,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 992. [2022-11-23 16:00:04,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 724 states have (on average 1.3342541436464088) internal successors, (966), 727 states have internal predecessors, (966), 167 states have call successors, (167), 101 states have call predecessors, (167), 100 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2022-11-23 16:00:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1297 transitions. [2022-11-23 16:00:04,500 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1297 transitions. Word has length 48 [2022-11-23 16:00:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:04,501 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1297 transitions. [2022-11-23 16:00:04,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-23 16:00:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1297 transitions. [2022-11-23 16:00:04,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-23 16:00:04,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:04,502 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 16:00:04,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 16:00:04,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:04,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:04,503 INFO L85 PathProgramCache]: Analyzing trace with hash 175129522, now seen corresponding path program 1 times [2022-11-23 16:00:04,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:04,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439071548] [2022-11-23 16:00:04,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:04,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 16:00:04,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:04,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439071548] [2022-11-23 16:00:04,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439071548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:04,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:04,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:00:04,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199335824] [2022-11-23 16:00:04,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:04,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:00:04,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:04,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:00:04,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:00:04,546 INFO L87 Difference]: Start difference. First operand 992 states and 1297 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 16:00:04,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:04,805 INFO L93 Difference]: Finished difference Result 2491 states and 3230 transitions. [2022-11-23 16:00:04,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:00:04,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2022-11-23 16:00:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:04,815 INFO L225 Difference]: With dead ends: 2491 [2022-11-23 16:00:04,815 INFO L226 Difference]: Without dead ends: 1505 [2022-11-23 16:00:04,819 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 [2022-11-23 16:00:04,820 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 42 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:04,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 194 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:04,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2022-11-23 16:00:05,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1235. [2022-11-23 16:00:05,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 923 states have (on average 1.333694474539545) internal successors, (1231), 927 states have internal predecessors, (1231), 189 states have call successors, (189), 123 states have call predecessors, (189), 122 states have return successors, (186), 185 states have call predecessors, (186), 186 states have call successors, (186) [2022-11-23 16:00:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1606 transitions. [2022-11-23 16:00:05,019 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1606 transitions. Word has length 49 [2022-11-23 16:00:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:05,020 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 1606 transitions. [2022-11-23 16:00:05,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 16:00:05,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1606 transitions. [2022-11-23 16:00:05,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-23 16:00:05,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:05,023 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 16:00:05,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 16:00:05,024 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:05,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:05,025 INFO L85 PathProgramCache]: Analyzing trace with hash -379002054, now seen corresponding path program 1 times [2022-11-23 16:00:05,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:05,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870055618] [2022-11-23 16:00:05,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:05,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 16:00:05,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:05,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870055618] [2022-11-23 16:00:05,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870055618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:05,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:05,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:00:05,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314151813] [2022-11-23 16:00:05,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:05,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:00:05,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:05,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:00:05,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:00:05,086 INFO L87 Difference]: Start difference. First operand 1235 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 16:00:05,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:05,329 INFO L93 Difference]: Finished difference Result 2860 states and 3725 transitions. [2022-11-23 16:00:05,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:00:05,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2022-11-23 16:00:05,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:05,338 INFO L225 Difference]: With dead ends: 2860 [2022-11-23 16:00:05,338 INFO L226 Difference]: Without dead ends: 1631 [2022-11-23 16:00:05,342 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 [2022-11-23 16:00:05,343 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 42 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:05,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 195 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:05,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-11-23 16:00:05,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1437. [2022-11-23 16:00:05,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1085 states have (on average 1.335483870967742) internal successors, (1449), 1089 states have internal predecessors, (1449), 209 states have call successors, (209), 143 states have call predecessors, (209), 142 states have return successors, (206), 205 states have call predecessors, (206), 206 states have call successors, (206) [2022-11-23 16:00:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1864 transitions. [2022-11-23 16:00:05,525 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1864 transitions. Word has length 50 [2022-11-23 16:00:05,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:05,526 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 1864 transitions. [2022-11-23 16:00:05,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 16:00:05,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1864 transitions. [2022-11-23 16:00:05,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 16:00:05,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:05,529 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:05,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 16:00:05,529 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:05,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1557181953, now seen corresponding path program 1 times [2022-11-23 16:00:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:05,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923518845] [2022-11-23 16:00:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:05,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 16:00:05,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:05,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923518845] [2022-11-23 16:00:05,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923518845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:05,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130981113] [2022-11-23 16:00:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:05,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:05,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:05,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:06,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:00:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:06,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 16:00:06,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 16:00:06,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:00:06,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130981113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:06,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:00:06,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2022-11-23 16:00:06,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977327549] [2022-11-23 16:00:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:06,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:00:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:06,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:00:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:00:06,265 INFO L87 Difference]: Start difference. First operand 1437 states and 1864 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 16:00:06,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:06,714 INFO L93 Difference]: Finished difference Result 3838 states and 4994 transitions. [2022-11-23 16:00:06,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:00:06,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2022-11-23 16:00:06,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:06,727 INFO L225 Difference]: With dead ends: 3838 [2022-11-23 16:00:06,727 INFO L226 Difference]: Without dead ends: 2828 [2022-11-23 16:00:06,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:00:06,733 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 49 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:06,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 177 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2022-11-23 16:00:07,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2815. [2022-11-23 16:00:07,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2143 states have (on average 1.333177788147457) internal successors, (2857), 2147 states have internal predecessors, (2857), 389 states have call successors, (389), 283 states have call predecessors, (389), 282 states have return successors, (386), 385 states have call predecessors, (386), 386 states have call successors, (386) [2022-11-23 16:00:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3632 transitions. [2022-11-23 16:00:07,168 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3632 transitions. Word has length 88 [2022-11-23 16:00:07,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:07,169 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 3632 transitions. [2022-11-23 16:00:07,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 16:00:07,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3632 transitions. [2022-11-23 16:00:07,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 16:00:07,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:07,173 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:07,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:07,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:07,388 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:07,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash -207634656, now seen corresponding path program 1 times [2022-11-23 16:00:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:07,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274893455] [2022-11-23 16:00:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:07,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 16:00:07,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:07,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274893455] [2022-11-23 16:00:07,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274893455] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:07,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552896986] [2022-11-23 16:00:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:07,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:07,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:07,849 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:07,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:00:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:07,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:00:07,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 16:00:08,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:00:08,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552896986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:08,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:00:08,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-23 16:00:08,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466830142] [2022-11-23 16:00:08,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:08,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:00:08,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:08,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:00:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:00:08,019 INFO L87 Difference]: Start difference. First operand 2815 states and 3632 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:00:08,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:08,458 INFO L93 Difference]: Finished difference Result 4830 states and 6297 transitions. [2022-11-23 16:00:08,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:00:08,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 88 [2022-11-23 16:00:08,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:08,474 INFO L225 Difference]: With dead ends: 4830 [2022-11-23 16:00:08,474 INFO L226 Difference]: Without dead ends: 2843 [2022-11-23 16:00:08,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:00:08,481 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 68 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:08,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 220 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2022-11-23 16:00:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2815. [2022-11-23 16:00:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2143 states have (on average 1.3201119925338312) internal successors, (2829), 2147 states have internal predecessors, (2829), 389 states have call successors, (389), 283 states have call predecessors, (389), 282 states have return successors, (386), 385 states have call predecessors, (386), 386 states have call successors, (386) [2022-11-23 16:00:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3604 transitions. [2022-11-23 16:00:08,860 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3604 transitions. Word has length 88 [2022-11-23 16:00:08,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:08,861 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 3604 transitions. [2022-11-23 16:00:08,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:00:08,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3604 transitions. [2022-11-23 16:00:08,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 16:00:08,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:08,873 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:08,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:09,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 16:00:09,080 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:09,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:09,081 INFO L85 PathProgramCache]: Analyzing trace with hash 49377354, now seen corresponding path program 1 times [2022-11-23 16:00:09,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:09,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199207830] [2022-11-23 16:00:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:09,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-23 16:00:09,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:09,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199207830] [2022-11-23 16:00:09,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199207830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:09,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887492627] [2022-11-23 16:00:09,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:09,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:09,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:09,275 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:09,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:00:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:09,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 16:00:09,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 16:00:09,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:00:09,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887492627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:09,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:00:09,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-11-23 16:00:09,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647769833] [2022-11-23 16:00:09,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:09,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:00:09,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:00:09,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:00:09,514 INFO L87 Difference]: Start difference. First operand 2815 states and 3604 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 16:00:09,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:09,894 INFO L93 Difference]: Finished difference Result 4816 states and 6236 transitions. [2022-11-23 16:00:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:00:09,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2022-11-23 16:00:09,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:09,911 INFO L225 Difference]: With dead ends: 4816 [2022-11-23 16:00:09,911 INFO L226 Difference]: Without dead ends: 2815 [2022-11-23 16:00:09,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:00:09,917 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:09,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 82 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2022-11-23 16:00:10,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2815. [2022-11-23 16:00:10,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2143 states have (on average 1.3070461969202054) internal successors, (2801), 2147 states have internal predecessors, (2801), 389 states have call successors, (389), 283 states have call predecessors, (389), 282 states have return successors, (386), 385 states have call predecessors, (386), 386 states have call successors, (386) [2022-11-23 16:00:10,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3576 transitions. [2022-11-23 16:00:10,312 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3576 transitions. Word has length 88 [2022-11-23 16:00:10,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:10,312 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 3576 transitions. [2022-11-23 16:00:10,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 16:00:10,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3576 transitions. [2022-11-23 16:00:10,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 16:00:10,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:10,315 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:10,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:10,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:10,523 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:10,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1858608875, now seen corresponding path program 1 times [2022-11-23 16:00:10,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:10,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52893266] [2022-11-23 16:00:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:10,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 16:00:10,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:10,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52893266] [2022-11-23 16:00:10,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52893266] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:10,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670632555] [2022-11-23 16:00:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:10,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:10,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:10,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:10,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:00:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:11,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 16:00:11,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 16:00:11,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:11,439 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-23 16:00:11,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670632555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:11,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [313945810] [2022-11-23 16:00:11,467 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2022-11-23 16:00:11,467 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:11,474 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:11,480 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:11,481 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:16,032 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 107 for LOIs [2022-11-23 16:00:16,075 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 115 for LOIs [2022-11-23 16:00:16,116 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 115 for LOIs [2022-11-23 16:00:16,156 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 42 for LOIs [2022-11-23 16:00:16,164 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 123 for LOIs [2022-11-23 16:00:16,377 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:23,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [313945810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:23,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:23,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [12, 4, 5] total 45 [2022-11-23 16:00:23,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106096730] [2022-11-23 16:00:23,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:23,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 16:00:23,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:23,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 16:00:23,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1730, Unknown=0, NotChecked=0, Total=1980 [2022-11-23 16:00:23,108 INFO L87 Difference]: Start difference. First operand 2815 states and 3576 transitions. Second operand has 32 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 27 states have internal predecessors, (39), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-23 16:00:26,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:26,510 INFO L93 Difference]: Finished difference Result 5594 states and 7116 transitions. [2022-11-23 16:00:26,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-23 16:00:26,511 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 27 states have internal predecessors, (39), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 89 [2022-11-23 16:00:26,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:26,527 INFO L225 Difference]: With dead ends: 5594 [2022-11-23 16:00:26,527 INFO L226 Difference]: Without dead ends: 2785 [2022-11-23 16:00:26,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 231 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=408, Invalid=2898, Unknown=0, NotChecked=0, Total=3306 [2022-11-23 16:00:26,536 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 156 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:26,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 515 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 16:00:26,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2022-11-23 16:00:26,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2705. [2022-11-23 16:00:26,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2061 states have (on average 1.304706453178069) internal successors, (2689), 2064 states have internal predecessors, (2689), 374 states have call successors, (374), 270 states have call predecessors, (374), 269 states have return successors, (371), 371 states have call predecessors, (371), 371 states have call successors, (371) [2022-11-23 16:00:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3434 transitions. [2022-11-23 16:00:26,897 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3434 transitions. Word has length 89 [2022-11-23 16:00:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:26,898 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 3434 transitions. [2022-11-23 16:00:26,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 27 states have internal predecessors, (39), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-23 16:00:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3434 transitions. [2022-11-23 16:00:26,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 16:00:26,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:26,901 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:26,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:27,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:27,109 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:27,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:27,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1277764109, now seen corresponding path program 1 times [2022-11-23 16:00:27,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:27,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565643311] [2022-11-23 16:00:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:27,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-23 16:00:27,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:27,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565643311] [2022-11-23 16:00:27,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565643311] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:27,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013577006] [2022-11-23 16:00:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:27,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:27,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:27,256 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:27,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 16:00:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:27,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 16:00:27,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 16:00:27,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:00:27,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013577006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:27,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:00:27,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-11-23 16:00:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531225745] [2022-11-23 16:00:27,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:27,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:00:27,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:27,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:00:27,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:00:27,493 INFO L87 Difference]: Start difference. First operand 2705 states and 3434 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 16:00:27,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:27,852 INFO L93 Difference]: Finished difference Result 4711 states and 6014 transitions. [2022-11-23 16:00:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:00:27,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 89 [2022-11-23 16:00:27,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:27,864 INFO L225 Difference]: With dead ends: 4711 [2022-11-23 16:00:27,865 INFO L226 Difference]: Without dead ends: 2710 [2022-11-23 16:00:27,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:00:27,871 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 48 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:27,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 176 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:27,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2022-11-23 16:00:28,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2705. [2022-11-23 16:00:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2061 states have (on average 1.2979136341581756) internal successors, (2675), 2064 states have internal predecessors, (2675), 374 states have call successors, (374), 270 states have call predecessors, (374), 269 states have return successors, (371), 371 states have call predecessors, (371), 371 states have call successors, (371) [2022-11-23 16:00:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3420 transitions. [2022-11-23 16:00:28,255 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3420 transitions. Word has length 89 [2022-11-23 16:00:28,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:28,255 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 3420 transitions. [2022-11-23 16:00:28,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 16:00:28,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3420 transitions. [2022-11-23 16:00:28,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 16:00:28,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:28,259 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:28,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:28,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 16:00:28,476 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:28,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1388552914, now seen corresponding path program 1 times [2022-11-23 16:00:28,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:28,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713116114] [2022-11-23 16:00:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:28,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-23 16:00:28,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:28,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713116114] [2022-11-23 16:00:28,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713116114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:28,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167822006] [2022-11-23 16:00:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:28,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:28,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:28,621 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:28,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 16:00:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:28,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:00:28,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 16:00:28,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:00:28,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167822006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:28,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:00:28,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 16:00:28,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154010606] [2022-11-23 16:00:28,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:28,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:00:28,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:28,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:00:28,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:00:28,770 INFO L87 Difference]: Start difference. First operand 2705 states and 3420 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:00:29,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:29,236 INFO L93 Difference]: Finished difference Result 5838 states and 7493 transitions. [2022-11-23 16:00:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:00:29,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 89 [2022-11-23 16:00:29,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:29,254 INFO L225 Difference]: With dead ends: 5838 [2022-11-23 16:00:29,255 INFO L226 Difference]: Without dead ends: 3837 [2022-11-23 16:00:29,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:00:29,262 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 59 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:29,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 203 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:29,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2022-11-23 16:00:29,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 3773. [2022-11-23 16:00:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 2835 states have (on average 1.2694885361552029) internal successors, (3599), 2838 states have internal predecessors, (3599), 546 states have call successors, (546), 392 states have call predecessors, (546), 391 states have return successors, (573), 543 states have call predecessors, (573), 543 states have call successors, (573) [2022-11-23 16:00:29,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 4718 transitions. [2022-11-23 16:00:29,896 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 4718 transitions. Word has length 89 [2022-11-23 16:00:29,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:29,897 INFO L495 AbstractCegarLoop]: Abstraction has 3773 states and 4718 transitions. [2022-11-23 16:00:29,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:00:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 4718 transitions. [2022-11-23 16:00:29,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 16:00:29,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:29,900 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:29,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:30,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 16:00:30,111 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:30,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:30,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1217251954, now seen corresponding path program 1 times [2022-11-23 16:00:30,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:30,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248548600] [2022-11-23 16:00:30,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:30,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-23 16:00:30,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:30,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248548600] [2022-11-23 16:00:30,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248548600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:30,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533126239] [2022-11-23 16:00:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:30,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:30,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:30,221 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:30,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 16:00:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:30,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 16:00:30,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 16:00:30,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:00:30,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533126239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:30,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:00:30,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2022-11-23 16:00:30,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759511336] [2022-11-23 16:00:30,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:30,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:00:30,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:30,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:00:30,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 16:00:30,388 INFO L87 Difference]: Start difference. First operand 3773 states and 4718 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 16:00:31,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:31,331 INFO L93 Difference]: Finished difference Result 10150 states and 12591 transitions. [2022-11-23 16:00:31,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 16:00:31,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 90 [2022-11-23 16:00:31,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:31,372 INFO L225 Difference]: With dead ends: 10150 [2022-11-23 16:00:31,372 INFO L226 Difference]: Without dead ends: 6383 [2022-11-23 16:00:31,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-23 16:00:31,384 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 199 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:31,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 237 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:31,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2022-11-23 16:00:32,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6379. [2022-11-23 16:00:32,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6379 states, 4679 states have (on average 1.2280401795255396) internal successors, (5746), 4682 states have internal predecessors, (5746), 1000 states have call successors, (1000), 700 states have call predecessors, (1000), 699 states have return successors, (1057), 997 states have call predecessors, (1057), 997 states have call successors, (1057) [2022-11-23 16:00:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6379 states to 6379 states and 7803 transitions. [2022-11-23 16:00:32,215 INFO L78 Accepts]: Start accepts. Automaton has 6379 states and 7803 transitions. Word has length 90 [2022-11-23 16:00:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:32,215 INFO L495 AbstractCegarLoop]: Abstraction has 6379 states and 7803 transitions. [2022-11-23 16:00:32,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 16:00:32,216 INFO L276 IsEmpty]: Start isEmpty. Operand 6379 states and 7803 transitions. [2022-11-23 16:00:32,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-23 16:00:32,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:32,219 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:32,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:32,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:32,426 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:32,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:32,427 INFO L85 PathProgramCache]: Analyzing trace with hash 772094738, now seen corresponding path program 1 times [2022-11-23 16:00:32,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:32,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406104882] [2022-11-23 16:00:32,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:32,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-23 16:00:32,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:32,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406104882] [2022-11-23 16:00:32,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406104882] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:32,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961894906] [2022-11-23 16:00:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:32,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:32,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:32,544 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:32,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 16:00:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:32,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 16:00:32,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 16:00:32,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:00:32,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961894906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:32,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:00:32,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-11-23 16:00:32,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448107211] [2022-11-23 16:00:32,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:32,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 16:00:32,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:32,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 16:00:32,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-23 16:00:32,813 INFO L87 Difference]: Start difference. First operand 6379 states and 7803 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:00:33,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:33,678 INFO L93 Difference]: Finished difference Result 12253 states and 15351 transitions. [2022-11-23 16:00:33,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 16:00:33,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 92 [2022-11-23 16:00:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:33,724 INFO L225 Difference]: With dead ends: 12253 [2022-11-23 16:00:33,725 INFO L226 Difference]: Without dead ends: 5880 [2022-11-23 16:00:33,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-23 16:00:33,741 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 151 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:33,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 425 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:00:33,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2022-11-23 16:00:34,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 4590. [2022-11-23 16:00:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 3484 states have (on average 1.247703788748565) internal successors, (4347), 3487 states have internal predecessors, (4347), 631 states have call successors, (631), 475 states have call predecessors, (631), 474 states have return successors, (658), 628 states have call predecessors, (658), 628 states have call successors, (658) [2022-11-23 16:00:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 5636 transitions. [2022-11-23 16:00:34,559 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 5636 transitions. Word has length 92 [2022-11-23 16:00:34,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:34,560 INFO L495 AbstractCegarLoop]: Abstraction has 4590 states and 5636 transitions. [2022-11-23 16:00:34,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:00:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 5636 transitions. [2022-11-23 16:00:34,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-23 16:00:34,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:34,564 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:34,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:34,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 16:00:34,771 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:34,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:34,771 INFO L85 PathProgramCache]: Analyzing trace with hash -872335531, now seen corresponding path program 1 times [2022-11-23 16:00:34,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:34,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042135126] [2022-11-23 16:00:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:34,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-23 16:00:34,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:34,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042135126] [2022-11-23 16:00:34,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042135126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:34,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:34,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:00:34,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645906489] [2022-11-23 16:00:34,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:34,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:00:34,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:34,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:00:34,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:34,828 INFO L87 Difference]: Start difference. First operand 4590 states and 5636 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:00:35,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:35,433 INFO L93 Difference]: Finished difference Result 7625 states and 9413 transitions. [2022-11-23 16:00:35,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:00:35,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 98 [2022-11-23 16:00:35,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:35,446 INFO L225 Difference]: With dead ends: 7625 [2022-11-23 16:00:35,446 INFO L226 Difference]: Without dead ends: 3922 [2022-11-23 16:00:35,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:35,453 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 159 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:35,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 231 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2022-11-23 16:00:35,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3836. [2022-11-23 16:00:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3836 states, 2928 states have (on average 1.2278005464480874) internal successors, (3595), 2931 states have internal predecessors, (3595), 517 states have call successors, (517), 391 states have call predecessors, (517), 390 states have return successors, (514), 514 states have call predecessors, (514), 514 states have call successors, (514) [2022-11-23 16:00:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 4626 transitions. [2022-11-23 16:00:35,949 INFO L78 Accepts]: Start accepts. Automaton has 3836 states and 4626 transitions. Word has length 98 [2022-11-23 16:00:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:35,949 INFO L495 AbstractCegarLoop]: Abstraction has 3836 states and 4626 transitions. [2022-11-23 16:00:35,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 16:00:35,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3836 states and 4626 transitions. [2022-11-23 16:00:35,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-23 16:00:35,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:35,953 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:35,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 16:00:35,953 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:35,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2003794542, now seen corresponding path program 1 times [2022-11-23 16:00:35,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:35,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327335157] [2022-11-23 16:00:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:35,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-23 16:00:36,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:36,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327335157] [2022-11-23 16:00:36,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327335157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:36,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:36,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:00:36,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762645029] [2022-11-23 16:00:36,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:36,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:00:36,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:36,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:00:36,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:00:36,047 INFO L87 Difference]: Start difference. First operand 3836 states and 4626 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 16:00:37,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:37,092 INFO L93 Difference]: Finished difference Result 8288 states and 10404 transitions. [2022-11-23 16:00:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 16:00:37,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2022-11-23 16:00:37,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:37,111 INFO L225 Difference]: With dead ends: 8288 [2022-11-23 16:00:37,111 INFO L226 Difference]: Without dead ends: 6001 [2022-11-23 16:00:37,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 16:00:37,118 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 260 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:37,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 488 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:00:37,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2022-11-23 16:00:37,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 4162. [2022-11-23 16:00:37,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4162 states, 3176 states have (on average 1.223866498740554) internal successors, (3887), 3179 states have internal predecessors, (3887), 561 states have call successors, (561), 425 states have call predecessors, (561), 424 states have return successors, (558), 558 states have call predecessors, (558), 558 states have call successors, (558) [2022-11-23 16:00:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 5006 transitions. [2022-11-23 16:00:37,788 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 5006 transitions. Word has length 99 [2022-11-23 16:00:37,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:37,788 INFO L495 AbstractCegarLoop]: Abstraction has 4162 states and 5006 transitions. [2022-11-23 16:00:37,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 16:00:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 5006 transitions. [2022-11-23 16:00:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-23 16:00:37,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:37,792 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:37,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 16:00:37,792 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:37,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:37,793 INFO L85 PathProgramCache]: Analyzing trace with hash 650173982, now seen corresponding path program 1 times [2022-11-23 16:00:37,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:37,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391794613] [2022-11-23 16:00:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:37,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 16:00:38,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:38,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391794613] [2022-11-23 16:00:38,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391794613] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:38,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246356752] [2022-11-23 16:00:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:38,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:38,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:38,147 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:38,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 16:00:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:38,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 16:00:38,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-23 16:00:38,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:38,586 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-23 16:00:38,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246356752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:38,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1444094402] [2022-11-23 16:00:38,592 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-23 16:00:38,592 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:38,593 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:38,593 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:38,593 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:41,750 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 109 for LOIs [2022-11-23 16:00:41,785 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 117 for LOIs [2022-11-23 16:00:41,821 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 117 for LOIs [2022-11-23 16:00:41,849 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 44 for LOIs [2022-11-23 16:00:41,856 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 44 for LOIs [2022-11-23 16:00:42,031 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:49,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1444094402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:49,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:49,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [12, 4, 5] total 46 [2022-11-23 16:00:49,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105641930] [2022-11-23 16:00:49,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:49,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-23 16:00:49,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:49,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-23 16:00:49,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1817, Unknown=0, NotChecked=0, Total=2070 [2022-11-23 16:00:49,174 INFO L87 Difference]: Start difference. First operand 4162 states and 5006 transitions. Second operand has 33 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-23 16:01:08,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:08,297 INFO L93 Difference]: Finished difference Result 6427 states and 7780 transitions. [2022-11-23 16:01:08,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-23 16:01:08,298 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 100 [2022-11-23 16:01:08,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:08,310 INFO L225 Difference]: With dead ends: 6427 [2022-11-23 16:01:08,310 INFO L226 Difference]: Without dead ends: 4274 [2022-11-23 16:01:08,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 263 SyntacticMatches, 7 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4467 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=1287, Invalid=12285, Unknown=0, NotChecked=0, Total=13572 [2022-11-23 16:01:08,319 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 297 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 2663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:08,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 945 Invalid, 2663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 16:01:08,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2022-11-23 16:01:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4100. [2022-11-23 16:01:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 3128 states have (on average 1.2196291560102301) internal successors, (3815), 3131 states have internal predecessors, (3815), 553 states have call successors, (553), 419 states have call predecessors, (553), 418 states have return successors, (552), 550 states have call predecessors, (552), 550 states have call successors, (552) [2022-11-23 16:01:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 4920 transitions. [2022-11-23 16:01:08,930 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 4920 transitions. Word has length 100 [2022-11-23 16:01:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:08,930 INFO L495 AbstractCegarLoop]: Abstraction has 4100 states and 4920 transitions. [2022-11-23 16:01:08,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-23 16:01:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 4920 transitions. [2022-11-23 16:01:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-23 16:01:08,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:08,934 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:01:08,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:09,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:09,140 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:01:09,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:09,140 INFO L85 PathProgramCache]: Analyzing trace with hash -362763198, now seen corresponding path program 1 times [2022-11-23 16:01:09,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:09,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121437766] [2022-11-23 16:01:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:09,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 16:01:09,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:09,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121437766] [2022-11-23 16:01:09,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121437766] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:09,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273967315] [2022-11-23 16:01:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:09,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:09,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:09,473 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:09,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 16:01:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:09,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 16:01:09,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 16:01:09,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-23 16:01:09,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273967315] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:09,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [87888873] [2022-11-23 16:01:09,880 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-23 16:01:09,880 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:09,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:09,882 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:09,882 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:12,907 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-11-23 16:01:12,923 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-23 16:01:12,941 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-23 16:01:12,960 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-23 16:01:12,966 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-23 16:01:13,085 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:01:18,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [87888873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:18,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:18,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [12, 4, 5] total 47 [2022-11-23 16:01:18,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256423316] [2022-11-23 16:01:18,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:18,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-23 16:01:18,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:18,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-23 16:01:18,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1862, Unknown=0, NotChecked=0, Total=2162 [2022-11-23 16:01:18,903 INFO L87 Difference]: Start difference. First operand 4100 states and 4920 transitions. Second operand has 34 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-23 16:01:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:21,950 INFO L93 Difference]: Finished difference Result 6763 states and 8117 transitions. [2022-11-23 16:01:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-23 16:01:21,950 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 100 [2022-11-23 16:01:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:21,961 INFO L225 Difference]: With dead ends: 6763 [2022-11-23 16:01:21,961 INFO L226 Difference]: Without dead ends: 4150 [2022-11-23 16:01:21,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 260 SyntacticMatches, 9 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=491, Invalid=3291, Unknown=0, NotChecked=0, Total=3782 [2022-11-23 16:01:21,967 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 116 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:21,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 407 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 16:01:21,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2022-11-23 16:01:22,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 4109. [2022-11-23 16:01:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 3137 states have (on average 1.2193178195728402) internal successors, (3825), 3140 states have internal predecessors, (3825), 553 states have call successors, (553), 419 states have call predecessors, (553), 418 states have return successors, (552), 550 states have call predecessors, (552), 550 states have call successors, (552) [2022-11-23 16:01:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 4930 transitions. [2022-11-23 16:01:22,578 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 4930 transitions. Word has length 100 [2022-11-23 16:01:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:22,581 INFO L495 AbstractCegarLoop]: Abstraction has 4109 states and 4930 transitions. [2022-11-23 16:01:22,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 29 states have internal predecessors, (46), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-23 16:01:22,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 4930 transitions. [2022-11-23 16:01:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-23 16:01:22,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:22,585 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:01:22,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:22,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:22,792 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:01:22,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash 128718012, now seen corresponding path program 1 times [2022-11-23 16:01:22,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:22,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391381401] [2022-11-23 16:01:22,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:22,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:22,907 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-23 16:01:22,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:22,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391381401] [2022-11-23 16:01:22,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391381401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:22,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:01:22,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:01:22,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66327253] [2022-11-23 16:01:22,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:22,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:01:22,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:22,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:01:22,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:01:22,909 INFO L87 Difference]: Start difference. First operand 4109 states and 4930 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 16:01:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:23,502 INFO L93 Difference]: Finished difference Result 6555 states and 7921 transitions. [2022-11-23 16:01:23,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 16:01:23,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-11-23 16:01:23,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:23,516 INFO L225 Difference]: With dead ends: 6555 [2022-11-23 16:01:23,516 INFO L226 Difference]: Without dead ends: 2946 [2022-11-23 16:01:23,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:01:23,526 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 73 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:23,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 229 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:01:23,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2022-11-23 16:01:23,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2503. [2022-11-23 16:01:23,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 1879 states have (on average 1.2038318254390634) internal successors, (2262), 1886 states have internal predecessors, (2262), 360 states have call successors, (360), 259 states have call predecessors, (360), 263 states have return successors, (380), 358 states have call predecessors, (380), 358 states have call successors, (380) [2022-11-23 16:01:23,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 3002 transitions. [2022-11-23 16:01:23,997 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 3002 transitions. Word has length 102 [2022-11-23 16:01:23,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:23,997 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 3002 transitions. [2022-11-23 16:01:23,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 16:01:23,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 3002 transitions. [2022-11-23 16:01:24,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-23 16:01:24,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:24,000 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:01:24,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 16:01:24,001 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:01:24,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:24,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1717133426, now seen corresponding path program 1 times [2022-11-23 16:01:24,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:24,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800559815] [2022-11-23 16:01:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:24,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 16:01:24,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:24,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800559815] [2022-11-23 16:01:24,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800559815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:24,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356804730] [2022-11-23 16:01:24,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:24,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:24,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:24,315 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:24,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 16:01:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:24,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 16:01:24,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 16:01:24,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-23 16:01:24,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356804730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:24,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1716504325] [2022-11-23 16:01:24,709 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-23 16:01:24,709 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:24,710 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:24,710 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:24,710 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:28,329 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-11-23 16:01:28,348 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-23 16:01:28,368 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-23 16:01:28,404 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-23 16:01:28,409 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-23 16:01:28,535 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:01:37,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1716504325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:37,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:37,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [12, 5, 6] total 50 [2022-11-23 16:01:37,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022217811] [2022-11-23 16:01:37,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:37,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-23 16:01:37,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:37,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-23 16:01:37,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2176, Unknown=0, NotChecked=0, Total=2450 [2022-11-23 16:01:37,988 INFO L87 Difference]: Start difference. First operand 2503 states and 3002 transitions. Second operand has 36 states, 32 states have (on average 1.5) internal successors, (48), 31 states have internal predecessors, (48), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-23 16:01:43,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:43,015 INFO L93 Difference]: Finished difference Result 3748 states and 4521 transitions. [2022-11-23 16:01:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-23 16:01:43,018 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 1.5) internal successors, (48), 31 states have internal predecessors, (48), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 101 [2022-11-23 16:01:43,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:43,025 INFO L225 Difference]: With dead ends: 3748 [2022-11-23 16:01:43,025 INFO L226 Difference]: Without dead ends: 2480 [2022-11-23 16:01:43,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 254 SyntacticMatches, 15 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=451, Invalid=3709, Unknown=0, NotChecked=0, Total=4160 [2022-11-23 16:01:43,031 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 92 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:43,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 643 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 16:01:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2022-11-23 16:01:43,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2433. [2022-11-23 16:01:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 1827 states have (on average 1.2014230979748222) internal successors, (2195), 1834 states have internal predecessors, (2195), 350 states have call successors, (350), 251 states have call predecessors, (350), 255 states have return successors, (370), 348 states have call predecessors, (370), 348 states have call successors, (370) [2022-11-23 16:01:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 2915 transitions. [2022-11-23 16:01:43,475 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 2915 transitions. Word has length 101 [2022-11-23 16:01:43,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:43,476 INFO L495 AbstractCegarLoop]: Abstraction has 2433 states and 2915 transitions. [2022-11-23 16:01:43,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 1.5) internal successors, (48), 31 states have internal predecessors, (48), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-23 16:01:43,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 2915 transitions. [2022-11-23 16:01:43,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-23 16:01:43,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:43,479 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:01:43,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:43,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:43,694 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:01:43,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:43,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1461258897, now seen corresponding path program 1 times [2022-11-23 16:01:43,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:43,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870817997] [2022-11-23 16:01:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:43,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 16:01:43,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:43,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870817997] [2022-11-23 16:01:43,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870817997] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:43,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983431755] [2022-11-23 16:01:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:43,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:43,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:43,843 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:43,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 16:01:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:43,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 16:01:43,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 16:01:44,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 16:01:44,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983431755] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:44,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [128317907] [2022-11-23 16:01:44,544 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-23 16:01:44,544 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:44,545 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:44,545 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:44,545 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:47,524 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 45 for LOIs [2022-11-23 16:01:47,528 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 105 for LOIs [2022-11-23 16:01:47,552 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-23 16:01:47,569 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-23 16:01:47,588 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-23 16:01:47,592 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-23 16:01:47,739 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:01:56,212 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '233901#(and (<= 0 ~data_0~0) (= ~e~0 0) (<= 0 ~i~0) (= ~P_1_ev~0 0) (= ~P_1_st~0 1) (= ~C_1_pr~0 0) (= ~max_loop~0 2) (= ~P_1_i~0 1) (<= 0 ~P_1_pc~0) (= |#NULL.offset| 0) (<= 0 ~C_1_pc~0) (<= 0 ~timer~0) (not (= ~num~0 0)) (<= 0 ~num~0) (= ~C_1_ev~0 0) (<= 0 |#StackHeapBarrier|) (= ~data_1~0 0) (not (= ~num~0 1)) (< ~i~0 ~max_loop~0) (= ~C_1_i~0 1) (= |#NULL.base| 0))' at error location [2022-11-23 16:01:56,212 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:01:56,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:56,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 5 [2022-11-23 16:01:56,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132612490] [2022-11-23 16:01:56,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:01:56,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:01:56,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:56,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:01:56,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1810, Unknown=0, NotChecked=0, Total=2070 [2022-11-23 16:01:56,220 INFO L87 Difference]: Start difference. First operand 2433 states and 2915 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 16:01:56,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:56,896 INFO L93 Difference]: Finished difference Result 4669 states and 5817 transitions. [2022-11-23 16:01:56,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 16:01:56,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 103 [2022-11-23 16:01:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:56,906 INFO L225 Difference]: With dead ends: 4669 [2022-11-23 16:01:56,906 INFO L226 Difference]: Without dead ends: 3200 [2022-11-23 16:01:56,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 262 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=268, Invalid=1988, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 16:01:56,911 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 119 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:56,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 559 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:01:56,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2022-11-23 16:01:57,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 2357. [2022-11-23 16:01:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 1769 states have (on average 1.1978518937252685) internal successors, (2119), 1776 states have internal predecessors, (2119), 340 states have call successors, (340), 243 states have call predecessors, (340), 247 states have return successors, (359), 338 states have call predecessors, (359), 338 states have call successors, (359) [2022-11-23 16:01:57,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 2818 transitions. [2022-11-23 16:01:57,347 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 2818 transitions. Word has length 103 [2022-11-23 16:01:57,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:57,348 INFO L495 AbstractCegarLoop]: Abstraction has 2357 states and 2818 transitions. [2022-11-23 16:01:57,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 16:01:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 2818 transitions. [2022-11-23 16:01:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 16:01:57,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:57,351 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:01:57,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:57,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-23 16:01:57,557 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:01:57,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:57,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1612043928, now seen corresponding path program 1 times [2022-11-23 16:01:57,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:57,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927067215] [2022-11-23 16:01:57,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:57,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 16:01:57,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:57,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927067215] [2022-11-23 16:01:57,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927067215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:57,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136624162] [2022-11-23 16:01:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:57,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:57,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:57,878 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:57,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 16:01:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:57,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 16:01:57,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 16:01:58,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-23 16:01:58,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136624162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:58,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [174846273] [2022-11-23 16:01:58,327 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-23 16:01:58,328 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:58,328 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:58,328 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:58,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:02:01,367 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 73 for LOIs [2022-11-23 16:02:01,379 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-11-23 16:02:01,407 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-23 16:02:01,431 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-23 16:02:01,449 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-23 16:02:01,452 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-23 16:02:01,548 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:02:11,647 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '244949#(and (<= 0 ~data_0~0) (= ~i~0 0) (= ~e~0 0) (= ~P_1_ev~0 0) (= ~C_1_pr~0 0) (= ~max_loop~0 2) (= ~P_1_i~0 1) (= ~C_1_pc~0 0) (<= 0 ~data_1~0) (<= 0 ~P_1_pc~0) (= |#NULL.offset| 0) (not (= ~num~0 0)) (<= 0 ~num~0) (= ~C_1_ev~0 0) (<= 0 |#StackHeapBarrier|) (not (= ~num~0 1)) (= ~timer~0 0) (= ~C_1_st~0 1) (= ~C_1_i~0 1) (= |#NULL.base| 0))' at error location [2022-11-23 16:02:11,647 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:02:11,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:02:11,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 6] total 16 [2022-11-23 16:02:11,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802381737] [2022-11-23 16:02:11,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:02:11,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 16:02:11,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:11,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 16:02:11,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=2386, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 16:02:11,650 INFO L87 Difference]: Start difference. First operand 2357 states and 2818 transitions. Second operand has 16 states, 14 states have (on average 10.357142857142858) internal successors, (145), 14 states have internal predecessors, (145), 6 states have call successors, (39), 6 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 6 states have call successors, (39) [2022-11-23 16:02:16,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:16,248 INFO L93 Difference]: Finished difference Result 5787 states and 7176 transitions. [2022-11-23 16:02:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-11-23 16:02:16,248 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 10.357142857142858) internal successors, (145), 14 states have internal predecessors, (145), 6 states have call successors, (39), 6 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 6 states have call successors, (39) Word has length 110 [2022-11-23 16:02:16,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:16,258 INFO L225 Difference]: With dead ends: 5787 [2022-11-23 16:02:16,259 INFO L226 Difference]: Without dead ends: 3438 [2022-11-23 16:02:16,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 286 SyntacticMatches, 19 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11055 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=1861, Invalid=24221, Unknown=0, NotChecked=0, Total=26082 [2022-11-23 16:02:16,272 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1215 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 3624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:16,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 2733 Invalid, 3624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 3079 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 16:02:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2022-11-23 16:02:16,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 2299. [2022-11-23 16:02:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1751 states have (on average 1.2135922330097086) internal successors, (2125), 1761 states have internal predecessors, (2125), 310 states have call successors, (310), 229 states have call predecessors, (310), 237 states have return successors, (344), 308 states have call predecessors, (344), 308 states have call successors, (344) [2022-11-23 16:02:16,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2779 transitions. [2022-11-23 16:02:16,813 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2779 transitions. Word has length 110 [2022-11-23 16:02:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:16,813 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 2779 transitions. [2022-11-23 16:02:16,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 10.357142857142858) internal successors, (145), 14 states have internal predecessors, (145), 6 states have call successors, (39), 6 states have call predecessors, (39), 7 states have return successors, (39), 8 states have call predecessors, (39), 6 states have call successors, (39) [2022-11-23 16:02:16,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2779 transitions. [2022-11-23 16:02:16,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-23 16:02:16,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:16,819 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 16:02:16,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 16:02:17,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-23 16:02:17,026 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash 562120164, now seen corresponding path program 1 times [2022-11-23 16:02:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:17,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036304673] [2022-11-23 16:02:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 77 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-23 16:02:17,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:17,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036304673] [2022-11-23 16:02:17,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036304673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:02:17,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034598492] [2022-11-23 16:02:17,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:17,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:02:17,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:02:17,264 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:02:17,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 16:02:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:17,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-23 16:02:17,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:02:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 180 proven. 13 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-23 16:02:17,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:02:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 91 proven. 11 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-23 16:02:17,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034598492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:02:17,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [652013256] [2022-11-23 16:02:17,705 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-23 16:02:17,706 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:02:17,706 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:02:17,706 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:02:17,706 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:02:21,350 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 45 for LOIs [2022-11-23 16:02:21,354 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 105 for LOIs [2022-11-23 16:02:21,380 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-11-23 16:02:21,409 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-11-23 16:02:21,431 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-11-23 16:02:21,434 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-11-23 16:02:21,563 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:02:29,759 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '258011#(and (<= 0 ~data_0~0) (= ~e~0 0) (<= 0 ~i~0) (= ~P_1_ev~0 0) (= ~P_1_st~0 1) (= ~C_1_pr~0 0) (= ~max_loop~0 2) (= ~P_1_i~0 1) (<= 0 ~data_1~0) (<= 0 ~P_1_pc~0) (= |#NULL.offset| 0) (<= 0 ~C_1_pc~0) (<= 0 ~timer~0) (not (= ~num~0 0)) (<= 0 ~num~0) (= ~C_1_ev~0 0) (<= 0 |#StackHeapBarrier|) (not (= ~num~0 1)) (< ~i~0 ~max_loop~0) (= ~C_1_i~0 1) (= |#NULL.base| 0))' at error location [2022-11-23 16:02:29,759 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:02:29,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:02:29,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 11 [2022-11-23 16:02:29,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836547639] [2022-11-23 16:02:29,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:02:29,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 16:02:29,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:29,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 16:02:29,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=2349, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 16:02:29,761 INFO L87 Difference]: Start difference. First operand 2299 states and 2779 transitions. Second operand has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 7 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) [2022-11-23 16:02:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:31,103 INFO L93 Difference]: Finished difference Result 7211 states and 8955 transitions. [2022-11-23 16:02:31,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 16:02:31,103 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 7 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) Word has length 158 [2022-11-23 16:02:31,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:31,112 INFO L225 Difference]: With dead ends: 7211 [2022-11-23 16:02:31,113 INFO L226 Difference]: Without dead ends: 4865 [2022-11-23 16:02:31,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 439 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1673 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=447, Invalid=4109, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 16:02:31,117 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 324 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:31,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 786 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:02:31,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2022-11-23 16:02:31,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 2721. [2022-11-23 16:02:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 1998 states have (on average 1.1881881881881882) internal successors, (2374), 2047 states have internal predecessors, (2374), 403 states have call successors, (403), 272 states have call predecessors, (403), 319 states have return successors, (629), 401 states have call predecessors, (629), 401 states have call successors, (629) [2022-11-23 16:02:31,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3406 transitions. [2022-11-23 16:02:31,681 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3406 transitions. Word has length 158 [2022-11-23 16:02:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:31,682 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 3406 transitions. [2022-11-23 16:02:31,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 7 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) [2022-11-23 16:02:31,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3406 transitions. [2022-11-23 16:02:31,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-23 16:02:31,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:31,688 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 16:02:31,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-23 16:02:31,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:02:31,894 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:31,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:31,895 INFO L85 PathProgramCache]: Analyzing trace with hash 733252937, now seen corresponding path program 1 times [2022-11-23 16:02:31,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:31,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420715493] [2022-11-23 16:02:31,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:31,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 84 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-23 16:02:32,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:32,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420715493] [2022-11-23 16:02:32,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420715493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:02:32,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34836149] [2022-11-23 16:02:32,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:32,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:02:32,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:02:32,047 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:02:32,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 16:02:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:32,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 16:02:32,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:02:32,290 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-23 16:02:32,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:02:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-23 16:02:32,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34836149] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 16:02:32,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 16:02:32,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 7 [2022-11-23 16:02:32,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542896756] [2022-11-23 16:02:32,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:02:32,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:02:32,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:32,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:02:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:02:32,420 INFO L87 Difference]: Start difference. First operand 2721 states and 3406 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 16:02:32,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:32,912 INFO L93 Difference]: Finished difference Result 5382 states and 6780 transitions. [2022-11-23 16:02:32,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:02:32,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 169 [2022-11-23 16:02:32,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:32,919 INFO L225 Difference]: With dead ends: 5382 [2022-11-23 16:02:32,919 INFO L226 Difference]: Without dead ends: 2826 [2022-11-23 16:02:32,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:02:32,925 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 75 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:32,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 150 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:02:32,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2022-11-23 16:02:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2692. [2022-11-23 16:02:33,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2004 states have (on average 1.1651696606786428) internal successors, (2335), 2032 states have internal predecessors, (2335), 374 states have call successors, (374), 287 states have call predecessors, (374), 313 states have return successors, (426), 372 states have call predecessors, (426), 372 states have call successors, (426) [2022-11-23 16:02:33,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 3135 transitions. [2022-11-23 16:02:33,443 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 3135 transitions. Word has length 169 [2022-11-23 16:02:33,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:33,444 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 3135 transitions. [2022-11-23 16:02:33,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 16:02:33,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 3135 transitions. [2022-11-23 16:02:33,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-23 16:02:33,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:33,448 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 16:02:33,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 16:02:33,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-23 16:02:33,656 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:33,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:33,656 INFO L85 PathProgramCache]: Analyzing trace with hash 379124548, now seen corresponding path program 1 times [2022-11-23 16:02:33,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:33,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534937170] [2022-11-23 16:02:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:33,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 16:02:33,691 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 16:02:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 16:02:33,828 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 16:02:33,828 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 16:02:33,829 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 16:02:33,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-23 16:02:33,835 INFO L444 BasicCegarLoop]: Path program 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] [2022-11-23 16:02:33,840 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 16:02:34,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:02:34 BoogieIcfgContainer [2022-11-23 16:02:34,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 16:02:34,022 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 16:02:34,022 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 16:02:34,022 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 16:02:34,023 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:00:00" (3/4) ... [2022-11-23 16:02:34,025 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 16:02:34,216 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 16:02:34,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 16:02:34,217 INFO L158 Benchmark]: Toolchain (without parser) took 155332.28ms. Allocated memory was 138.4MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 73.7MB in the beginning and 849.3MB in the end (delta: -775.6MB). Peak memory consumption was 569.9MB. Max. memory is 16.1GB. [2022-11-23 16:02:34,218 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:02:34,221 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.10ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 73.5MB in the beginning and 131.5MB in the end (delta: -57.9MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-11-23 16:02:34,221 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.05ms. Allocated memory is still 167.8MB. Free memory was 131.5MB in the beginning and 129.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:02:34,221 INFO L158 Benchmark]: Boogie Preprocessor took 32.63ms. Allocated memory is still 167.8MB. Free memory was 129.4MB in the beginning and 128.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:02:34,224 INFO L158 Benchmark]: RCFGBuilder took 874.12ms. Allocated memory is still 167.8MB. Free memory was 128.0MB in the beginning and 100.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-23 16:02:34,228 INFO L158 Benchmark]: TraceAbstraction took 153790.87ms. Allocated memory was 167.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 100.0MB in the beginning and 867.1MB in the end (delta: -767.1MB). Peak memory consumption was 547.5MB. Max. memory is 16.1GB. [2022-11-23 16:02:34,230 INFO L158 Benchmark]: Witness Printer took 195.00ms. Allocated memory is still 1.5GB. Free memory was 866.1MB in the beginning and 849.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 16:02:34,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.10ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 73.5MB in the beginning and 131.5MB in the end (delta: -57.9MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.05ms. Allocated memory is still 167.8MB. Free memory was 131.5MB in the beginning and 129.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.63ms. Allocated memory is still 167.8MB. Free memory was 129.4MB in the beginning and 128.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 874.12ms. Allocated memory is still 167.8MB. Free memory was 128.0MB in the beginning and 100.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 153790.87ms. Allocated memory was 167.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 100.0MB in the beginning and 867.1MB in the end (delta: -767.1MB). Peak memory consumption was 547.5MB. Max. memory is 16.1GB. * Witness Printer took 195.00ms. Allocated memory is still 1.5GB. Free memory was 866.1MB in the beginning and 849.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int max_loop ; [L26] int num ; [L27] int i ; [L28] int e ; [L29] int timer ; [L30] char data_0 ; [L31] char data_1 ; [L74] int P_1_pc; [L75] int P_1_st ; [L76] int P_1_i ; [L77] int P_1_ev ; [L132] int C_1_pc ; [L133] int C_1_st ; [L134] int C_1_i ; [L135] int C_1_ev ; [L136] int C_1_pr ; [L500] int count ; [L501] int __retres2 ; [L505] num = 0 [L506] i = 0 [L507] max_loop = 2 [L509] timer = 0 [L510] P_1_pc = 0 [L511] C_1_pc = 0 [L513] count = 0 [L514] CALL init_model() [L493] P_1_i = 1 [L494] C_1_i = 1 [L514] RET init_model() [L515] CALL start_simulation() [L431] int kernel_st ; [L432] int tmp ; [L433] int tmp___0 ; [L437] kernel_st = 0 VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L438] FCALL update_channels() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L439] CALL init_threads() [L236] COND TRUE (int )P_1_i == 1 [L237] P_1_st = 0 [L241] COND TRUE (int )C_1_i == 1 [L242] C_1_st = 0 [L439] RET init_threads() [L440] FCALL fire_delta_events() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L441] CALL activate_threads() VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L117] COND FALSE !((int )P_1_pc == 1) VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L127] __retres1 = 0 VAL [\old(C_1_st)=0, \old(P_1_st)=0, __retres1=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND FALSE !(\read(tmp)) [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L199] COND FALSE !((int )C_1_pc == 1) VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=0, \old(P_1_st)=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L219] __retres1 = 0 VAL [\old(C_1_st)=0, \old(P_1_st)=0, __retres1=0, C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L441] RET activate_threads() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L442] FCALL reset_delta_events() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, kernel_st=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L445] COND TRUE 1 [L448] kernel_st = 1 [L449] CALL eval() [L272] int tmp ; [L273] int tmp___0 ; [L274] int tmp___1 ; [L275] int tmp___2 ; VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L279] COND TRUE 1 VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, exists_runnable_thread()=1, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L282] tmp___2 = exists_runnable_thread() [L284] COND TRUE \read(tmp___2) VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0, tmp___2=1] [L289] COND TRUE (int )P_1_st == 0 [L291] tmp = __VERIFIER_nondet_int() [L293] COND FALSE !(\read(tmp)) VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=0, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0, tmp=0, tmp___2=1] [L304] COND TRUE (int )C_1_st == 0 [L306] tmp___1 = __VERIFIER_nondet_int() [L308] COND TRUE \read(tmp___1) [L310] C_1_st = 1 [L311] CALL C_1() [L138] char c ; VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=1, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L141] COND TRUE (int )C_1_pc == 0 VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=1, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L156] COND TRUE i < max_loop VAL [C_1_ev=0, C_1_i=1, C_1_pc=0, C_1_pr=0, C_1_st=1, data_0=0, data_1=0, e=0, i=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=0] [L158] COND TRUE num == 0 [L159] timer = 1 [L160] i += 1 [L161] C_1_pc = 1 [L162] C_1_st = 2 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1] [L311] RET C_1() [L279] COND TRUE 1 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1, tmp=0, tmp___1=-1, tmp___2=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1, tmp=0, tmp___1=-1, tmp___2=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND TRUE \read(tmp___2) VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=0, timer=1, tmp=0, tmp___1=-1, tmp___2=1] [L289] COND TRUE (int )P_1_st == 0 [L291] tmp = __VERIFIER_nondet_int() [L293] COND TRUE \read(tmp) [L295] P_1_st = 1 [L296] CALL P_1() [L82] COND TRUE (int )P_1_pc == 0 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=0, data_1=0, e=0, i=1, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=1, timer=1] [L93] COND TRUE i < max_loop [L96] CALL write_data(num, 'A') [L59] COND TRUE i___0 == 0 [L60] data_0 = c VAL [c=65, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, i___0=0, max_loop=2, num=0, P_1_ev=0, P_1_i=1, P_1_pc=0, P_1_st=1, timer=1, unknown-#in~c-unknown=65, unknown-#in~i___0-unknown=0] [L96] RET write_data(num, 'A') [L97] num += 1 [L98] P_1_pc = 1 [L99] P_1_st = 2 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L296] RET P_1() [L304] COND FALSE !((int )C_1_st == 0) VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-2, tmp___1=-1, tmp___2=1] [L279] COND TRUE 1 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-2, tmp___1=-1, tmp___2=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L251] int __retres1 ; [L254] COND FALSE !((int )P_1_st == 0) [L258] COND FALSE !((int )C_1_st == 0) [L266] __retres1 = 0 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, exists_runnable_thread()=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-2, tmp___1=-1, tmp___2=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND FALSE !(\read(tmp___2)) VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-2, tmp___1=-1, tmp___2=0] [L449] RET eval() [L452] kernel_st = 2 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=2, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L453] FCALL update_channels() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=2, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L456] kernel_st = 3 VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L457] FCALL fire_delta_events() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L458] CALL activate_threads() VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L117] COND TRUE (int )P_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L118] COND FALSE !((int )P_1_ev == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L127] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND FALSE !(\read(tmp)) [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L199] COND TRUE (int )C_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L200] COND FALSE !((int )e == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L219] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L458] RET activate_threads() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L459] FCALL reset_delta_events() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L462] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L251] int __retres1 ; [L254] COND FALSE !((int )P_1_st == 0) [L258] COND FALSE !((int )C_1_st == 0) [L266] __retres1 = 0 [L268] return (__retres1); [L462] RET, EXPR exists_runnable_thread() VAL [C_1_ev=0, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, exists_runnable_thread()=0, i=1, kernel_st=3, max_loop=2, num=1, P_1_ev=0, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L462] tmp = exists_runnable_thread() [L464] COND TRUE tmp == 0 [L466] kernel_st = 4 [L467] CALL fire_time_events() [L346] C_1_ev = 1 [L348] P_1_ev = 1 [L467] RET fire_time_events() [L468] CALL activate_threads() VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L117] COND TRUE (int )P_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L118] COND TRUE (int )P_1_ev == 1 [L119] __retres1 = 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=1, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND TRUE \read(tmp) [L384] P_1_st = 0 [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L199] COND TRUE (int )C_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L200] COND FALSE !((int )e == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L219] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L468] RET activate_threads() VAL [C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=4, max_loop=2, num=1, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp=0] [L469] CALL reset_time_events() [L360] COND TRUE (int )P_1_ev == 1 [L361] P_1_ev = 2 [L365] COND TRUE (int )C_1_ev == 1 [L366] C_1_ev = 2 [L469] RET reset_time_events() [L475] CALL, EXPR stop_simulation() [L412] int tmp ; [L413] int __retres2 ; VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L417] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L417] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L417] tmp = exists_runnable_thread() [L419] COND TRUE \read(tmp) [L420] __retres2 = 0 [L427] return (__retres2); [L475] RET, EXPR stop_simulation() [L475] tmp___0 = stop_simulation() [L477] COND FALSE !(\read(tmp___0)) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, kernel_st=4, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp=0, tmp___0=0] [L445] COND TRUE 1 [L448] kernel_st = 1 [L449] CALL eval() [L272] int tmp ; [L273] int tmp___0 ; [L274] int tmp___1 ; [L275] int tmp___2 ; VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L279] COND TRUE 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND TRUE \read(tmp___2) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp___2=1] [L289] COND TRUE (int )P_1_st == 0 [L291] tmp = __VERIFIER_nondet_int() [L293] COND TRUE \read(tmp) [L295] P_1_st = 1 [L296] CALL P_1() [L82] COND FALSE !((int )P_1_pc == 0) [L85] COND TRUE (int )P_1_pc == 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L93] COND TRUE i < max_loop [L96] CALL write_data(num, 'A') [L59] COND FALSE !(i___0 == 0) VAL [c=65, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=0, e=0, i=1, i___0=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1, unknown-#in~c-unknown=65, unknown-#in~i___0-unknown=1] [L62] COND TRUE i___0 == 1 [L63] data_1 = c VAL [c=65, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, i___0=1, max_loop=2, num=1, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1, unknown-#in~c-unknown=65, unknown-#in~i___0-unknown=1] [L96] RET write_data(num, 'A') [L97] num += 1 [L98] P_1_pc = 1 [L99] P_1_st = 2 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L296] RET P_1() [L304] COND FALSE !((int )C_1_st == 0) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-3, tmp___2=1] [L279] COND TRUE 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-3, tmp___2=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L251] int __retres1 ; [L254] COND FALSE !((int )P_1_st == 0) [L258] COND FALSE !((int )C_1_st == 0) [L266] __retres1 = 0 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, exists_runnable_thread()=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-3, tmp___2=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND FALSE !(\read(tmp___2)) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=-3, tmp___2=0] [L449] RET eval() [L452] kernel_st = 2 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=2, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L453] FCALL update_channels() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=2, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L456] kernel_st = 3 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L457] FCALL fire_delta_events() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L458] CALL activate_threads() VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L117] COND TRUE (int )P_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L118] COND FALSE !((int )P_1_ev == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L127] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND FALSE !(\read(tmp)) [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L199] COND TRUE (int )C_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L200] COND FALSE !((int )e == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L219] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L458] RET activate_threads() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L459] FCALL reset_delta_events() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L462] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L251] int __retres1 ; [L254] COND FALSE !((int )P_1_st == 0) [L258] COND FALSE !((int )C_1_st == 0) [L266] __retres1 = 0 [L268] return (__retres1); [L462] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, exists_runnable_thread()=0, i=1, kernel_st=3, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1, tmp=0, tmp___0=0] [L462] tmp = exists_runnable_thread() [L464] COND TRUE tmp == 0 [L466] kernel_st = 4 [L467] CALL fire_time_events() [L346] C_1_ev = 1 [L348] P_1_ev = 1 [L467] RET fire_time_events() [L468] CALL activate_threads() VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L375] int tmp ; [L376] int tmp___0 ; [L377] int tmp___1 ; [L381] CALL, EXPR is_P_1_triggered() [L114] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L117] COND TRUE (int )P_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L118] COND TRUE (int )P_1_ev == 1 [L119] __retres1 = 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=1, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=2, timer=1] [L129] return (__retres1); [L381] RET, EXPR is_P_1_triggered() [L381] tmp = is_P_1_triggered() [L383] COND TRUE \read(tmp) [L384] P_1_st = 0 [L389] CALL, EXPR is_C_1_triggered() [L196] int __retres1 ; VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L199] COND TRUE (int )C_1_pc == 1 VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L200] COND FALSE !((int )e == 1) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L209] COND FALSE !((int )C_1_pc == 2) VAL [\old(C_1_st)=2, \old(P_1_st)=2, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L219] __retres1 = 0 VAL [\old(C_1_st)=2, \old(P_1_st)=2, __retres1=0, C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L221] return (__retres1); [L389] RET, EXPR is_C_1_triggered() [L389] tmp___1 = is_C_1_triggered() [L391] COND FALSE !(\read(tmp___1)) [L468] RET activate_threads() VAL [C_1_ev=1, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=4, max_loop=2, num=2, P_1_ev=1, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp=0, tmp___0=0] [L469] CALL reset_time_events() [L360] COND TRUE (int )P_1_ev == 1 [L361] P_1_ev = 2 [L365] COND TRUE (int )C_1_ev == 1 [L366] C_1_ev = 2 [L469] RET reset_time_events() [L475] CALL, EXPR stop_simulation() [L412] int tmp ; [L413] int __retres2 ; VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L417] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L417] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L417] tmp = exists_runnable_thread() [L419] COND TRUE \read(tmp) [L420] __retres2 = 0 [L427] return (__retres2); [L475] RET, EXPR stop_simulation() [L475] tmp___0 = stop_simulation() [L477] COND FALSE !(\read(tmp___0)) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, kernel_st=4, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp=0, tmp___0=0] [L445] COND TRUE 1 [L448] kernel_st = 1 [L449] CALL eval() [L272] int tmp ; [L273] int tmp___0 ; [L274] int tmp___1 ; [L275] int tmp___2 ; VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L279] COND TRUE 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L282] CALL, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L251] int __retres1 ; [L254] COND TRUE (int )P_1_st == 0 [L255] __retres1 = 1 [L268] return (__retres1); [L282] RET, EXPR exists_runnable_thread() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, exists_runnable_thread()=1, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1] [L282] tmp___2 = exists_runnable_thread() [L284] COND TRUE \read(tmp___2) VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=0, timer=1, tmp___2=1] [L289] COND TRUE (int )P_1_st == 0 [L291] tmp = __VERIFIER_nondet_int() [L293] COND TRUE \read(tmp) [L295] P_1_st = 1 [L296] CALL P_1() [L82] COND FALSE !((int )P_1_pc == 0) [L85] COND TRUE (int )P_1_pc == 1 VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L93] COND TRUE i < max_loop [L96] CALL write_data(num, 'A') [L59] COND FALSE !(i___0 == 0) VAL [c=65, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, i___0=2, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1, unknown-#in~c-unknown=65, unknown-#in~i___0-unknown=2] [L62] COND FALSE !(i___0 == 1) VAL [c=65, C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, i___0=2, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1, unknown-#in~c-unknown=65, unknown-#in~i___0-unknown=2] [L66] CALL error() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] [L19] reach_error() VAL [C_1_ev=2, C_1_i=1, C_1_pc=1, C_1_pr=0, C_1_st=2, data_0=65, data_1=65, e=0, i=1, max_loop=2, num=2, P_1_ev=2, P_1_i=1, P_1_pc=1, P_1_st=1, timer=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 153.5s, OverallIterations: 27, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 47.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4764 SdHoareTripleChecker+Valid, 12.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4672 mSDsluCounter, 11442 SdHoareTripleChecker+Invalid, 10.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8109 mSDsCounter, 1293 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12771 IncrementalHoareTripleChecker+Invalid, 14064 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1293 mSolverCounterUnsat, 3333 mSDtfsCounter, 12771 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3737 GetRequests, 3002 SyntacticMatches, 66 SemanticMatches, 669 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21357 ImplicationChecksByTransitivity, 80.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6379occurred in iteration=15, InterpolantAutomatonStates: 442, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.5s AutomataMinimizationTime, 26 MinimizatonAttempts, 9208 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 3928 NumberOfCodeBlocks, 3928 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 4627 ConstructedInterpolants, 0 QuantifiedInterpolants, 10212 SizeOfPredicates, 23 NumberOfNonLiveVariables, 5150 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 49 InterpolantComputations, 19 PerfectInterpolantSequences, 3000/3623 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: OVERALL_TIME: 15.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 24, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 362, DAG_INTERPRETER_EARLY_EXITS: 4, TOOLS_POST_APPLICATIONS: 410, TOOLS_POST_TIME: 5.5s, TOOLS_POST_CALL_APPLICATIONS: 265, TOOLS_POST_CALL_TIME: 3.8s, TOOLS_POST_RETURN_APPLICATIONS: 220, TOOLS_POST_RETURN_TIME: 1.8s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 895, TOOLS_QUANTIFIERELIM_TIME: 10.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 981, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 280, DOMAIN_JOIN_TIME: 3.5s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 362, DOMAIN_ISBOTTOM_TIME: 0.5s, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME: 8.7s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 8.7s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 220, CALL_SUMMARIZER_CACHE_MISSES: 20, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 6303, DAG_COMPRESSION_RETAINED_NODES: 779, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-23 16:02:34,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35b600a8-d9c2-4f2c-96e7-3d590fabee88/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE