./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.01.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs --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 ea17b00cb6ed3e05e0ac7861fb220a62ceca6ba97bc4fe703ce3eb0d0ec5cbfe --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:15:57,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:15:57,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:15:57,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:15:57,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:15:57,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:15:57,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:15:57,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:15:57,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:15:57,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:15:57,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:15:57,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:15:57,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:15:57,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:15:57,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:15:57,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:15:57,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:15:57,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:15:57,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:15:57,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:15:57,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:15:57,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:15:57,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:15:57,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:15:57,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:15:57,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:15:57,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:15:57,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:15:57,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:15:57,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:15:57,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:15:57,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:15:57,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:15:57,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:15:57,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:15:57,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:15:57,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:15:57,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:15:57,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:15:57,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:15:57,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:15:57,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:15:57,229 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:15:57,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:15:57,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:15:57,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:15:57,232 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:15:57,232 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:15:57,240 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:15:57,241 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:15:57,241 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:15:57,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:15:57,243 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:15:57,243 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:15:57,244 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:15:57,244 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:15:57,244 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:15:57,245 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:15:57,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:15:57,246 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:15:57,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:15:57,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:15:57,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:15:57,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:15:57,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:15:57,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:15:57,248 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:15:57,248 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:15:57,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:15:57,249 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:15:57,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:15:57,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:15:57,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:15:57,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:15:57,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:15:57,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:15:57,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:15:57,253 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:15:57,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:15:57,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:15:57,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:15:57,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:15:57,255 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea17b00cb6ed3e05e0ac7861fb220a62ceca6ba97bc4fe703ce3eb0d0ec5cbfe [2021-11-19 14:15:57,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:15:57,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:15:57,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:15:57,646 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:15:57,647 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:15:57,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/systemc/transmitter.01.cil.c [2021-11-19 14:15:57,733 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/data/cb1f080af/4ea7596ef380424880b45413d5b2fc36/FLAG2d4710642 [2021-11-19 14:15:58,275 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:15:58,276 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/sv-benchmarks/c/systemc/transmitter.01.cil.c [2021-11-19 14:15:58,286 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/data/cb1f080af/4ea7596ef380424880b45413d5b2fc36/FLAG2d4710642 [2021-11-19 14:15:58,619 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/data/cb1f080af/4ea7596ef380424880b45413d5b2fc36 [2021-11-19 14:15:58,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:15:58,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:15:58,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:15:58,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:15:58,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:15:58,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:58" (1/1) ... [2021-11-19 14:15:58,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a26d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:58, skipping insertion in model container [2021-11-19 14:15:58,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:58" (1/1) ... [2021-11-19 14:15:58,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:15:58,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:15:58,893 WARN L230 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_8e4eea49-782e-4316-95d6-53849c4732b1/sv-benchmarks/c/systemc/transmitter.01.cil.c[706,719] [2021-11-19 14:15:58,950 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:15:58,962 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:15:58,977 WARN L230 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_8e4eea49-782e-4316-95d6-53849c4732b1/sv-benchmarks/c/systemc/transmitter.01.cil.c[706,719] [2021-11-19 14:15:59,003 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:15:59,021 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:15:59,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:59 WrapperNode [2021-11-19 14:15:59,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:15:59,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:15:59,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:15:59,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:15:59,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:59" (1/1) ... [2021-11-19 14:15:59,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:59" (1/1) ... [2021-11-19 14:15:59,077 INFO L137 Inliner]: procedures = 30, calls = 33, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 209 [2021-11-19 14:15:59,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:15:59,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:15:59,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:15:59,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:15:59,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:59" (1/1) ... [2021-11-19 14:15:59,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:59" (1/1) ... [2021-11-19 14:15:59,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:59" (1/1) ... [2021-11-19 14:15:59,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:59" (1/1) ... [2021-11-19 14:15:59,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:59" (1/1) ... [2021-11-19 14:15:59,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:59" (1/1) ... [2021-11-19 14:15:59,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:59" (1/1) ... [2021-11-19 14:15:59,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:15:59,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:15:59,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:15:59,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:15:59,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:59" (1/1) ... [2021-11-19 14:15:59,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:15:59,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:15:59,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:15:59,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:15:59,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:15:59,245 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-19 14:15:59,246 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-19 14:15:59,246 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-19 14:15:59,246 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-19 14:15:59,247 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-19 14:15:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-19 14:15:59,247 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-19 14:15:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-19 14:15:59,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:15:59,248 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-19 14:15:59,248 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-19 14:15:59,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:15:59,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:15:59,385 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:15:59,388 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:15:59,810 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:15:59,902 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:15:59,902 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-19 14:15:59,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:59 BoogieIcfgContainer [2021-11-19 14:15:59,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:15:59,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:15:59,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:15:59,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:15:59,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:15:58" (1/3) ... [2021-11-19 14:15:59,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189bee4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:15:59, skipping insertion in model container [2021-11-19 14:15:59,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:59" (2/3) ... [2021-11-19 14:15:59,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189bee4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:15:59, skipping insertion in model container [2021-11-19 14:15:59,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:59" (3/3) ... [2021-11-19 14:15:59,915 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2021-11-19 14:15:59,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:15:59,932 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:15:59,984 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:15:59,993 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:15:59,993 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:16:00,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 44 states have internal predecessors, (62), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 14:16:00,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-19 14:16:00,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:00,040 INFO L514 BasicCegarLoop]: 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] [2021-11-19 14:16:00,041 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:00,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:00,047 INFO L85 PathProgramCache]: Analyzing trace with hash 606187768, now seen corresponding path program 1 times [2021-11-19 14:16:00,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:16:00,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857636339] [2021-11-19 14:16:00,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:00,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:16:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:16:00,358 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:16:00,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857636339] [2021-11-19 14:16:00,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857636339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:00,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:16:00,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:16:00,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368822835] [2021-11-19 14:16:00,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:00,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:16:00,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:16:00,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:16:00,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:16:00,395 INFO L87 Difference]: Start difference. First operand has 62 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 44 states have internal predecessors, (62), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 14:16:00,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:00,695 INFO L93 Difference]: Finished difference Result 169 states and 242 transitions. [2021-11-19 14:16:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:16:00,698 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-11-19 14:16:00,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:00,707 INFO L225 Difference]: With dead ends: 169 [2021-11-19 14:16:00,723 INFO L226 Difference]: Without dead ends: 108 [2021-11-19 14:16:00,727 INFO L932 BasicCegarLoop]: 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 [2021-11-19 14:16:00,731 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 130 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:00,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 174 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:16:00,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-19 14:16:00,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2021-11-19 14:16:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 74 states have internal predecessors, (94), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-19 14:16:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 136 transitions. [2021-11-19 14:16:00,826 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 136 transitions. Word has length 33 [2021-11-19 14:16:00,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:00,827 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 136 transitions. [2021-11-19 14:16:00,827 INFO L471 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 14:16:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 136 transitions. [2021-11-19 14:16:00,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-19 14:16:00,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:00,833 INFO L514 BasicCegarLoop]: 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] [2021-11-19 14:16:00,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:16:00,834 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:00,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:00,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1386168697, now seen corresponding path program 1 times [2021-11-19 14:16:00,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:16:00,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691450079] [2021-11-19 14:16:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:00,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:16:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:16:01,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:16:01,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691450079] [2021-11-19 14:16:01,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691450079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:01,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:16:01,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 14:16:01,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019371374] [2021-11-19 14:16:01,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:01,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:16:01,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:16:01,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:16:01,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:16:01,019 INFO L87 Difference]: Start difference. First operand 105 states and 136 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 14:16:01,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:01,353 INFO L93 Difference]: Finished difference Result 271 states and 348 transitions. [2021-11-19 14:16:01,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:16:01,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-11-19 14:16:01,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:01,360 INFO L225 Difference]: With dead ends: 271 [2021-11-19 14:16:01,363 INFO L226 Difference]: Without dead ends: 172 [2021-11-19 14:16:01,367 INFO L932 BasicCegarLoop]: 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 [2021-11-19 14:16:01,371 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 176 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:01,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 167 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:16:01,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-19 14:16:01,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 158. [2021-11-19 14:16:01,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 112 states have (on average 1.2767857142857142) internal successors, (143), 113 states have internal predecessors, (143), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-19 14:16:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 201 transitions. [2021-11-19 14:16:01,436 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 201 transitions. Word has length 33 [2021-11-19 14:16:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:01,438 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 201 transitions. [2021-11-19 14:16:01,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 14:16:01,439 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 201 transitions. [2021-11-19 14:16:01,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 14:16:01,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:01,441 INFO L514 BasicCegarLoop]: 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] [2021-11-19 14:16:01,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 14:16:01,442 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:01,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:01,443 INFO L85 PathProgramCache]: Analyzing trace with hash 912561565, now seen corresponding path program 1 times [2021-11-19 14:16:01,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:16:01,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307753440] [2021-11-19 14:16:01,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:01,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:16:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:16:01,528 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:16:01,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307753440] [2021-11-19 14:16:01,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307753440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:01,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:16:01,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:16:01,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657449704] [2021-11-19 14:16:01,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:01,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:16:01,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:16:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:16:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:16:01,531 INFO L87 Difference]: Start difference. First operand 158 states and 201 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 14:16:01,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:01,601 INFO L93 Difference]: Finished difference Result 454 states and 578 transitions. [2021-11-19 14:16:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:16:01,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2021-11-19 14:16:01,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:01,606 INFO L225 Difference]: With dead ends: 454 [2021-11-19 14:16:01,606 INFO L226 Difference]: Without dead ends: 301 [2021-11-19 14:16:01,607 INFO L932 BasicCegarLoop]: 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 [2021-11-19 14:16:01,609 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 57 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:01,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 135 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:16:01,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-19 14:16:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 298. [2021-11-19 14:16:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 211 states have (on average 1.2274881516587677) internal successors, (259), 212 states have internal predecessors, (259), 54 states have call successors, (54), 32 states have call predecessors, (54), 32 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-19 14:16:01,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 367 transitions. [2021-11-19 14:16:01,656 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 367 transitions. Word has length 34 [2021-11-19 14:16:01,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:01,657 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 367 transitions. [2021-11-19 14:16:01,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-19 14:16:01,657 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 367 transitions. [2021-11-19 14:16:01,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 14:16:01,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:01,660 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:16:01,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 14:16:01,660 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:01,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:01,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1714501433, now seen corresponding path program 1 times [2021-11-19 14:16:01,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:16:01,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594309027] [2021-11-19 14:16:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:01,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:16:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:16:01,719 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:16:01,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594309027] [2021-11-19 14:16:01,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594309027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:01,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:16:01,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:16:01,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237611695] [2021-11-19 14:16:01,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:01,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:16:01,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:16:01,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:16:01,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:16:01,722 INFO L87 Difference]: Start difference. First operand 298 states and 367 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 14:16:01,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:01,801 INFO L93 Difference]: Finished difference Result 544 states and 675 transitions. [2021-11-19 14:16:01,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:16:01,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2021-11-19 14:16:01,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:01,806 INFO L225 Difference]: With dead ends: 544 [2021-11-19 14:16:01,806 INFO L226 Difference]: Without dead ends: 392 [2021-11-19 14:16:01,807 INFO L932 BasicCegarLoop]: 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 [2021-11-19 14:16:01,808 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 34 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:01,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 159 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:16:01,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-19 14:16:01,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 328. [2021-11-19 14:16:01,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 235 states have (on average 1.2297872340425533) internal successors, (289), 236 states have internal predecessors, (289), 57 states have call successors, (57), 35 states have call predecessors, (57), 35 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-11-19 14:16:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 403 transitions. [2021-11-19 14:16:01,850 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 403 transitions. Word has length 46 [2021-11-19 14:16:01,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:01,851 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 403 transitions. [2021-11-19 14:16:01,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 14:16:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 403 transitions. [2021-11-19 14:16:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 14:16:01,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:01,855 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:16:01,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 14:16:01,856 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:01,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:01,856 INFO L85 PathProgramCache]: Analyzing trace with hash 355288439, now seen corresponding path program 1 times [2021-11-19 14:16:01,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:16:01,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645734329] [2021-11-19 14:16:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:01,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:16:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 14:16:01,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:16:01,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645734329] [2021-11-19 14:16:01,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645734329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:01,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:16:01,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:16:01,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093367915] [2021-11-19 14:16:01,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:01,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:16:01,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:16:01,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:16:01,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:16:01,913 INFO L87 Difference]: Start difference. First operand 328 states and 403 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:16:02,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:02,070 INFO L93 Difference]: Finished difference Result 510 states and 637 transitions. [2021-11-19 14:16:02,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:16:02,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2021-11-19 14:16:02,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:02,075 INFO L225 Difference]: With dead ends: 510 [2021-11-19 14:16:02,075 INFO L226 Difference]: Without dead ends: 328 [2021-11-19 14:16:02,076 INFO L932 BasicCegarLoop]: 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 [2021-11-19 14:16:02,078 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 126 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:02,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 174 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:16:02,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-19 14:16:02,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2021-11-19 14:16:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 231 states have (on average 1.1904761904761905) internal successors, (275), 232 states have internal predecessors, (275), 57 states have call successors, (57), 35 states have call predecessors, (57), 35 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-11-19 14:16:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 389 transitions. [2021-11-19 14:16:02,119 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 389 transitions. Word has length 60 [2021-11-19 14:16:02,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:02,120 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 389 transitions. [2021-11-19 14:16:02,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:16:02,121 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 389 transitions. [2021-11-19 14:16:02,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 14:16:02,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:02,125 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:16:02,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 14:16:02,125 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:02,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:02,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1643482968, now seen corresponding path program 1 times [2021-11-19 14:16:02,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:16:02,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959576370] [2021-11-19 14:16:02,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:02,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:16:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:16:02,153 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 14:16:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:16:02,232 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 14:16:02,232 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 14:16:02,234 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 14:16:02,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 14:16:02,240 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-19 14:16:02,244 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:16:02,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:16:02 BoogieIcfgContainer [2021-11-19 14:16:02,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:16:02,330 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:16:02,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:16:02,331 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:16:02,331 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:59" (3/4) ... [2021-11-19 14:16:02,334 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 14:16:02,494 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:16:02,494 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:16:02,495 INFO L158 Benchmark]: Toolchain (without parser) took 3870.88ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 68.0MB in the beginning and 45.4MB in the end (delta: 22.6MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2021-11-19 14:16:02,496 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory was 55.4MB in the beginning and 55.4MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:16:02,497 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.74ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 67.8MB in the beginning and 98.5MB in the end (delta: -30.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:16:02,497 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.11ms. Allocated memory is still 125.8MB. Free memory was 98.5MB in the beginning and 96.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:16:02,498 INFO L158 Benchmark]: Boogie Preprocessor took 38.72ms. Allocated memory is still 125.8MB. Free memory was 96.4MB in the beginning and 95.5MB in the end (delta: 895.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:16:02,498 INFO L158 Benchmark]: RCFGBuilder took 787.23ms. Allocated memory is still 125.8MB. Free memory was 94.9MB in the beginning and 75.2MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-19 14:16:02,499 INFO L158 Benchmark]: TraceAbstraction took 2422.30ms. Allocated memory is still 125.8MB. Free memory was 74.6MB in the beginning and 51.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2021-11-19 14:16:02,499 INFO L158 Benchmark]: Witness Printer took 163.72ms. Allocated memory is still 125.8MB. Free memory was 51.5MB in the beginning and 45.4MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 14:16:02,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory was 55.4MB in the beginning and 55.4MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.74ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 67.8MB in the beginning and 98.5MB in the end (delta: -30.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.11ms. Allocated memory is still 125.8MB. Free memory was 98.5MB in the beginning and 96.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.72ms. Allocated memory is still 125.8MB. Free memory was 96.4MB in the beginning and 95.5MB in the end (delta: 895.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 787.23ms. Allocated memory is still 125.8MB. Free memory was 94.9MB in the beginning and 75.2MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2422.30ms. Allocated memory is still 125.8MB. Free memory was 74.6MB in the beginning and 51.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. * Witness Printer took 163.72ms. Allocated memory is still 125.8MB. Free memory was 51.5MB in the beginning and 45.4MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int m_pc = 0; [L26] int t1_pc = 0; [L27] int m_st ; [L28] int t1_st ; [L29] int m_i ; [L30] int t1_i ; [L31] int M_E = 2; [L32] int T1_E = 2; [L33] int E_1 = 2; [L449] int __retres1 ; [L453] CALL init_model() [L364] m_i = 1 [L365] t1_i = 1 [L453] RET init_model() [L454] CALL start_simulation() [L390] int kernel_st ; [L391] int tmp ; [L392] int tmp___0 ; [L396] kernel_st = 0 VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L397] FCALL update_channels() VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L398] CALL init_threads() [L161] COND TRUE m_i == 1 [L162] m_st = 0 [L166] COND TRUE t1_i == 1 [L167] t1_st = 0 [L398] RET init_threads() [L399] CALL fire_delta_events() VAL [\old(E_1)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L250] COND FALSE !(M_E == 0) [L255] COND FALSE !(T1_E == 0) [L260] COND FALSE !(E_1 == 0) [L399] RET fire_delta_events() VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L400] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L293] int tmp ; [L294] int tmp___0 ; [L298] CALL, EXPR is_master_triggered() [L112] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L115] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L125] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L127] return (__retres1); [L298] RET, EXPR is_master_triggered() [L298] tmp = is_master_triggered() [L300] COND FALSE !(\read(tmp)) [L306] CALL, EXPR is_transmit1_triggered() [L131] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L134] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L144] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L146] return (__retres1); [L306] RET, EXPR is_transmit1_triggered() [L306] tmp___0 = is_transmit1_triggered() [L308] COND FALSE !(\read(tmp___0)) [L400] RET activate_threads() VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L401] CALL reset_delta_events() VAL [\old(E_1)=2, \old(M_E)=2, \old(T1_E)=2, E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L273] COND FALSE !(M_E == 1) [L278] COND FALSE !(T1_E == 1) [L283] COND FALSE !(E_1 == 1) [L401] RET reset_delta_events() VAL [E_1=2, kernel_st=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L404] COND TRUE 1 [L407] kernel_st = 1 [L408] CALL eval() [L197] int tmp ; VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L201] COND TRUE 1 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L204] CALL, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L176] int __retres1 ; [L179] COND TRUE m_st == 0 [L180] __retres1 = 1 [L192] return (__retres1); [L204] RET, EXPR exists_runnable_thread() VAL [E_1=2, exists_runnable_thread()=1, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0] [L204] tmp = exists_runnable_thread() [L206] COND TRUE \read(tmp) VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1] [L211] COND TRUE m_st == 0 [L212] int tmp_ndt_1; [L213] tmp_ndt_1 = __VERIFIER_nondet_int() [L214] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, tmp=1, tmp_ndt_1=0] [L225] COND TRUE t1_st == 0 [L226] int tmp_ndt_2; [L227] tmp_ndt_2 = __VERIFIER_nondet_int() [L228] COND TRUE \read(tmp_ndt_2) [L230] t1_st = 1 [L231] CALL transmit1() [L82] COND TRUE t1_pc == 0 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1] [L93] COND TRUE 1 [L95] t1_pc = 1 [L96] t1_st = 2 [L231] RET transmit1() [L201] COND TRUE 1 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1] [L204] CALL, EXPR exists_runnable_thread() VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L176] int __retres1 ; [L179] COND TRUE m_st == 0 [L180] __retres1 = 1 [L192] return (__retres1); [L204] RET, EXPR exists_runnable_thread() VAL [E_1=2, exists_runnable_thread()=1, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1] [L204] tmp = exists_runnable_thread() [L206] COND TRUE \read(tmp) VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1] [L211] COND TRUE m_st == 0 [L212] int tmp_ndt_1; [L213] tmp_ndt_1 = __VERIFIER_nondet_int() [L214] COND TRUE \read(tmp_ndt_1) [L216] m_st = 1 [L217] CALL master() [L41] COND TRUE m_pc == 0 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L52] COND TRUE 1 [L55] E_1 = 1 [L56] CALL immediate_notify() [L322] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L293] int tmp ; [L294] int tmp___0 ; [L298] CALL, EXPR is_master_triggered() [L112] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L115] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L125] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=0, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L127] return (__retres1); [L298] RET, EXPR is_master_triggered() [L298] tmp = is_master_triggered() [L300] COND FALSE !(\read(tmp)) [L306] CALL, EXPR is_transmit1_triggered() [L131] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L134] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L135] COND TRUE E_1 == 1 [L136] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=1, E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2] [L146] return (__retres1); [L306] RET, EXPR is_transmit1_triggered() [L306] tmp___0 = is_transmit1_triggered() [L308] COND TRUE \read(tmp___0) [L309] t1_st = 0 [L322] RET activate_threads() VAL [E_1=1, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0] [L56] RET immediate_notify() [L57] E_1 = 2 VAL [E_1=2, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0] [L60] COND TRUE 1 [L62] m_pc = 1 [L63] m_st = 2 VAL [E_1=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0] [L217] RET master() [L225] COND TRUE t1_st == 0 [L226] int tmp_ndt_2; [L227] tmp_ndt_2 = __VERIFIER_nondet_int() [L228] COND TRUE \read(tmp_ndt_2) [L230] t1_st = 1 [L231] CALL transmit1() [L82] COND FALSE !(t1_pc == 0) VAL [E_1=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1] [L85] COND TRUE t1_pc == 1 [L101] CALL error() [L21] reach_error() VAL [E_1=2, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 530 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 523 mSDsluCounter, 809 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 428 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 418 IncrementalHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 471 mSDtfsCounter, 418 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=328occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 88 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 334 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 30/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 14:16:02,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e4eea49-782e-4316-95d6-53849c4732b1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE