./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 190527f0b5c755657048457e241e1db06174c0bd15c9c37dddb3c55b0e7d73ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:27:39,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:27:39,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:27:39,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:27:39,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:27:39,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:27:39,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:27:39,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:27:39,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:27:39,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:27:39,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:27:39,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:27:39,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:27:39,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:27:39,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:27:39,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:27:39,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:27:39,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:27:39,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:27:39,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:27:39,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:27:39,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:27:39,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:27:39,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:27:39,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:27:39,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:27:39,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:27:39,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:27:39,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:27:39,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:27:39,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:27:39,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:27:39,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:27:39,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:27:39,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:27:39,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:27:39,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:27:39,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:27:39,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:27:39,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:27:39,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:27:39,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:27:39,225 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:27:39,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:27:39,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:27:39,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:27:39,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:27:39,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:27:39,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:27:39,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:27:39,242 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:27:39,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:27:39,243 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:27:39,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:27:39,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:27:39,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:27:39,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:27:39,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:27:39,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:27:39,245 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:27:39,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:27:39,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:27:39,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:27:39,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:27:39,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:27:39,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:27:39,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:27:39,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:27:39,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:27:39,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:27:39,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:27:39,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:27:39,250 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:27:39,250 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:27:39,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:27:39,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:27:39,251 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_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 190527f0b5c755657048457e241e1db06174c0bd15c9c37dddb3c55b0e7d73ce [2021-11-20 06:27:39,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:27:39,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:27:39,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:27:39,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:27:39,553 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:27:39,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2021-11-20 06:27:39,616 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/data/28d69b39d/a60aa040333742f591c7ec839f1e7be3/FLAGdf2272d6c [2021-11-20 06:27:40,166 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:27:40,167 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2021-11-20 06:27:40,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/data/28d69b39d/a60aa040333742f591c7ec839f1e7be3/FLAGdf2272d6c [2021-11-20 06:27:40,463 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/data/28d69b39d/a60aa040333742f591c7ec839f1e7be3 [2021-11-20 06:27:40,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:27:40,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:27:40,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:27:40,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:27:40,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:27:40,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:27:40" (1/1) ... [2021-11-20 06:27:40,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a4bba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:40, skipping insertion in model container [2021-11-20 06:27:40,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:27:40" (1/1) ... [2021-11-20 06:27:40,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:27:40,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:27:40,924 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_1c696060-3a8f-4404-832a-b1e3ea306d38/sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c[17943,17956] [2021-11-20 06:27:40,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:27:40,948 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:27:41,054 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_1c696060-3a8f-4404-832a-b1e3ea306d38/sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c[17943,17956] [2021-11-20 06:27:41,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:27:41,073 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:27:41,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:41 WrapperNode [2021-11-20 06:27:41,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:27:41,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:27:41,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:27:41,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:27:41,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:41" (1/1) ... [2021-11-20 06:27:41,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:41" (1/1) ... [2021-11-20 06:27:41,146 INFO L137 Inliner]: procedures = 54, calls = 152, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 249 [2021-11-20 06:27:41,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:27:41,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:27:41,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:27:41,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:27:41,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:41" (1/1) ... [2021-11-20 06:27:41,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:41" (1/1) ... [2021-11-20 06:27:41,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:41" (1/1) ... [2021-11-20 06:27:41,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:41" (1/1) ... [2021-11-20 06:27:41,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:41" (1/1) ... [2021-11-20 06:27:41,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:41" (1/1) ... [2021-11-20 06:27:41,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:41" (1/1) ... [2021-11-20 06:27:41,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:27:41,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:27:41,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:27:41,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:27:41,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:41" (1/1) ... [2021-11-20 06:27:41,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:27:41,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:27:41,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:27:41,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:27:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:27:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-20 06:27:41,303 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-20 06:27:41,303 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-20 06:27:41,303 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-20 06:27:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-20 06:27:41,304 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-20 06:27:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-20 06:27:41,304 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-20 06:27:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:27:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-20 06:27:41,305 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-20 06:27:41,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:27:41,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:27:41,412 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:27:41,415 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:27:41,714 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:27:41,722 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:27:41,722 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:27:41,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:27:41 BoogieIcfgContainer [2021-11-20 06:27:41,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:27:41,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:27:41,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:27:41,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:27:41,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:27:40" (1/3) ... [2021-11-20 06:27:41,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c54b1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:27:41, skipping insertion in model container [2021-11-20 06:27:41,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:41" (2/3) ... [2021-11-20 06:27:41,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c54b1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:27:41, skipping insertion in model container [2021-11-20 06:27:41,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:27:41" (3/3) ... [2021-11-20 06:27:41,750 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2021-11-20 06:27:41,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:27:41,756 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:27:41,832 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:27:41,841 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=PETRI_NET, 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 [2021-11-20 06:27:41,842 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:27:41,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 60 states have (on average 1.4) internal successors, (84), 66 states have internal predecessors, (84), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 06:27:41,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:27:41,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:27:41,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:27:41,897 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:27:41,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:27:41,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1725577786, now seen corresponding path program 1 times [2021-11-20 06:27:41,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:27:41,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686949886] [2021-11-20 06:27:41,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:27:41,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:27:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:27:42,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:27:42,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686949886] [2021-11-20 06:27:42,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686949886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:27:42,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:27:42,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:27:42,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750457234] [2021-11-20 06:27:42,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:27:42,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:27:42,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:27:42,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:27:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:27:42,219 INFO L87 Difference]: Start difference. First operand has 75 states, 60 states have (on average 1.4) internal successors, (84), 66 states have internal predecessors, (84), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:27:42,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:27:42,274 INFO L93 Difference]: Finished difference Result 142 states and 195 transitions. [2021-11-20 06:27:42,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:27:42,276 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 06:27:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:27:42,287 INFO L225 Difference]: With dead ends: 142 [2021-11-20 06:27:42,287 INFO L226 Difference]: Without dead ends: 66 [2021-11-20 06:27:42,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:27:42,300 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:27:42,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:27:42,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-20 06:27:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-11-20 06:27:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.320754716981132) internal successors, (70), 58 states have internal predecessors, (70), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 06:27:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2021-11-20 06:27:42,343 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 19 [2021-11-20 06:27:42,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:27:42,344 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2021-11-20 06:27:42,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:27:42,345 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2021-11-20 06:27:42,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 06:27:42,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:27:42,347 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] [2021-11-20 06:27:42,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:27:42,348 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:27:42,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:27:42,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1606599487, now seen corresponding path program 1 times [2021-11-20 06:27:42,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:27:42,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046684411] [2021-11-20 06:27:42,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:27:42,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:27:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:27:42,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:27:42,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046684411] [2021-11-20 06:27:42,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046684411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:27:42,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:27:42,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:27:42,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767346278] [2021-11-20 06:27:42,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:27:42,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:27:42,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:27:42,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:27:42,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:27:42,472 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:27:42,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:27:42,497 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2021-11-20 06:27:42,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:27:42,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 06:27:42,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:27:42,508 INFO L225 Difference]: With dead ends: 97 [2021-11-20 06:27:42,509 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 06:27:42,510 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 [2021-11-20 06:27:42,511 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 13 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:27:42,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 127 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:27:42,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 06:27:42,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-20 06:27:42,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 52 states have internal predecessors, (63), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 06:27:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2021-11-20 06:27:42,522 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 20 [2021-11-20 06:27:42,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:27:42,523 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2021-11-20 06:27:42,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:27:42,523 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2021-11-20 06:27:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 06:27:42,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:27:42,525 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] [2021-11-20 06:27:42,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:27:42,525 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:27:42,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:27:42,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1615154650, now seen corresponding path program 1 times [2021-11-20 06:27:42,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:27:42,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275440889] [2021-11-20 06:27:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:27:42,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:27:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:27:42,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:27:42,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275440889] [2021-11-20 06:27:42,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275440889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:27:42,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:27:42,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:27:42,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235776288] [2021-11-20 06:27:42,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:27:42,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:27:42,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:27:42,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:27:42,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:27:42,635 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:27:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:27:42,779 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2021-11-20 06:27:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:27:42,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-20 06:27:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:27:42,781 INFO L225 Difference]: With dead ends: 107 [2021-11-20 06:27:42,781 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 06:27:42,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:27:42,784 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 144 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:27:42,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 150 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:27:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 06:27:42,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-20 06:27:42,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 52 states have internal predecessors, (62), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 06:27:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2021-11-20 06:27:42,796 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 25 [2021-11-20 06:27:42,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:27:42,796 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2021-11-20 06:27:42,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:27:42,797 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2021-11-20 06:27:42,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 06:27:42,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:27:42,798 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] [2021-11-20 06:27:42,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:27:42,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:27:42,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:27:42,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1401083419, now seen corresponding path program 1 times [2021-11-20 06:27:42,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:27:42,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816060434] [2021-11-20 06:27:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:27:42,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:27:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:42,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:27:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:27:42,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:27:42,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816060434] [2021-11-20 06:27:42,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816060434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:27:42,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:27:42,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:27:42,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418094350] [2021-11-20 06:27:42,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:27:42,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:27:42,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:27:42,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:27:42,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:27:42,908 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:27:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:27:42,962 INFO L93 Difference]: Finished difference Result 143 states and 185 transitions. [2021-11-20 06:27:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:27:42,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-11-20 06:27:42,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:27:42,965 INFO L225 Difference]: With dead ends: 143 [2021-11-20 06:27:42,965 INFO L226 Difference]: Without dead ends: 93 [2021-11-20 06:27:42,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:27:42,968 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 45 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:27:42,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:27:42,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-20 06:27:42,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2021-11-20 06:27:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 81 states have internal predecessors, (97), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-11-20 06:27:42,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2021-11-20 06:27:42,987 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 30 [2021-11-20 06:27:42,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:27:42,988 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2021-11-20 06:27:42,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:27:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2021-11-20 06:27:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 06:27:42,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:27:42,990 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, 1, 1] [2021-11-20 06:27:42,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:27:42,990 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:27:42,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:27:42,991 INFO L85 PathProgramCache]: Analyzing trace with hash 435007003, now seen corresponding path program 1 times [2021-11-20 06:27:42,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:27:42,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192902161] [2021-11-20 06:27:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:27:42,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:27:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:43,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:27:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:27:43,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:27:43,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192902161] [2021-11-20 06:27:43,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192902161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:27:43,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:27:43,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:27:43,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703356286] [2021-11-20 06:27:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:27:43,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:27:43,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:27:43,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:27:43,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:27:43,076 INFO L87 Difference]: Start difference. First operand 91 states and 115 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:27:43,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:27:43,143 INFO L93 Difference]: Finished difference Result 249 states and 330 transitions. [2021-11-20 06:27:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:27:43,144 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-11-20 06:27:43,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:27:43,146 INFO L225 Difference]: With dead ends: 249 [2021-11-20 06:27:43,146 INFO L226 Difference]: Without dead ends: 165 [2021-11-20 06:27:43,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:27:43,149 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 41 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:27:43,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 132 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:27:43,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-20 06:27:43,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2021-11-20 06:27:43,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 134 states have (on average 1.3059701492537314) internal successors, (175), 144 states have internal predecessors, (175), 15 states have call successors, (15), 15 states have call predecessors, (15), 13 states have return successors, (21), 13 states have call predecessors, (21), 15 states have call successors, (21) [2021-11-20 06:27:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 211 transitions. [2021-11-20 06:27:43,175 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 211 transitions. Word has length 36 [2021-11-20 06:27:43,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:27:43,176 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 211 transitions. [2021-11-20 06:27:43,176 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:27:43,176 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 211 transitions. [2021-11-20 06:27:43,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 06:27:43,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:27:43,191 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, 1, 1] [2021-11-20 06:27:43,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:27:43,192 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:27:43,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:27:43,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1456075357, now seen corresponding path program 1 times [2021-11-20 06:27:43,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:27:43,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105927257] [2021-11-20 06:27:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:27:43,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:27:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:43,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:27:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:27:43,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:27:43,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105927257] [2021-11-20 06:27:43,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105927257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:27:43,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:27:43,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:27:43,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013003026] [2021-11-20 06:27:43,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:27:43,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:27:43,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:27:43,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:27:43,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:27:43,357 INFO L87 Difference]: Start difference. First operand 163 states and 211 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:27:43,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:27:43,576 INFO L93 Difference]: Finished difference Result 399 states and 548 transitions. [2021-11-20 06:27:43,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:27:43,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-11-20 06:27:43,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:27:43,586 INFO L225 Difference]: With dead ends: 399 [2021-11-20 06:27:43,586 INFO L226 Difference]: Without dead ends: 243 [2021-11-20 06:27:43,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:27:43,599 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 163 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:27:43,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 436 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:27:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-20 06:27:43,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 233. [2021-11-20 06:27:43,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 190 states have (on average 1.2842105263157895) internal successors, (244), 206 states have internal predecessors, (244), 21 states have call successors, (21), 21 states have call predecessors, (21), 21 states have return successors, (39), 21 states have call predecessors, (39), 21 states have call successors, (39) [2021-11-20 06:27:43,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 304 transitions. [2021-11-20 06:27:43,647 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 304 transitions. Word has length 36 [2021-11-20 06:27:43,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:27:43,648 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 304 transitions. [2021-11-20 06:27:43,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:27:43,648 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 304 transitions. [2021-11-20 06:27:43,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-20 06:27:43,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:27:43,652 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, 1, 1, 1] [2021-11-20 06:27:43,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:27:43,652 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:27:43,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:27:43,653 INFO L85 PathProgramCache]: Analyzing trace with hash -260678510, now seen corresponding path program 1 times [2021-11-20 06:27:43,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:27:43,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81186745] [2021-11-20 06:27:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:27:43,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:27:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:43,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:27:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 06:27:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:27:43,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:27:43,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81186745] [2021-11-20 06:27:43,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81186745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:27:43,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:27:43,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:27:43,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648481822] [2021-11-20 06:27:43,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:27:43,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:27:43,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:27:43,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:27:43,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:27:43,731 INFO L87 Difference]: Start difference. First operand 233 states and 304 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:27:43,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:27:43,914 INFO L93 Difference]: Finished difference Result 628 states and 837 transitions. [2021-11-20 06:27:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:27:43,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2021-11-20 06:27:43,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:27:43,918 INFO L225 Difference]: With dead ends: 628 [2021-11-20 06:27:43,918 INFO L226 Difference]: Without dead ends: 402 [2021-11-20 06:27:43,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:27:43,921 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 109 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:27:43,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 352 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:27:43,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-20 06:27:43,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 309. [2021-11-20 06:27:43,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 257 states have (on average 1.2568093385214008) internal successors, (323), 280 states have internal predecessors, (323), 24 states have call successors, (24), 21 states have call predecessors, (24), 27 states have return successors, (47), 24 states have call predecessors, (47), 24 states have call successors, (47) [2021-11-20 06:27:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 394 transitions. [2021-11-20 06:27:43,976 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 394 transitions. Word has length 63 [2021-11-20 06:27:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:27:43,978 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 394 transitions. [2021-11-20 06:27:43,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:27:43,979 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 394 transitions. [2021-11-20 06:27:43,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-20 06:27:43,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:27:43,983 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, 1, 1, 1] [2021-11-20 06:27:43,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:27:43,984 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:27:43,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:27:43,985 INFO L85 PathProgramCache]: Analyzing trace with hash 162968212, now seen corresponding path program 1 times [2021-11-20 06:27:43,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:27:43,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90367551] [2021-11-20 06:27:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:27:43,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:27:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:44,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:27:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:44,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 06:27:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:27:44,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:27:44,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90367551] [2021-11-20 06:27:44,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90367551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:27:44,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:27:44,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:27:44,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935510823] [2021-11-20 06:27:44,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:27:44,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:27:44,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:27:44,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:27:44,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:27:44,146 INFO L87 Difference]: Start difference. First operand 309 states and 394 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:27:44,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:27:44,360 INFO L93 Difference]: Finished difference Result 593 states and 763 transitions. [2021-11-20 06:27:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:27:44,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2021-11-20 06:27:44,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:27:44,366 INFO L225 Difference]: With dead ends: 593 [2021-11-20 06:27:44,366 INFO L226 Difference]: Without dead ends: 291 [2021-11-20 06:27:44,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:27:44,369 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 165 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:27:44,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 336 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:27:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-20 06:27:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 269. [2021-11-20 06:27:44,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 221 states have (on average 1.2307692307692308) internal successors, (272), 239 states have internal predecessors, (272), 22 states have call successors, (22), 18 states have call predecessors, (22), 25 states have return successors, (40), 23 states have call predecessors, (40), 22 states have call successors, (40) [2021-11-20 06:27:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 334 transitions. [2021-11-20 06:27:44,409 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 334 transitions. Word has length 63 [2021-11-20 06:27:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:27:44,411 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 334 transitions. [2021-11-20 06:27:44,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:27:44,412 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 334 transitions. [2021-11-20 06:27:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 06:27:44,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:27:44,414 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:27:44,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:27:44,415 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:27:44,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:27:44,419 INFO L85 PathProgramCache]: Analyzing trace with hash 78012080, now seen corresponding path program 1 times [2021-11-20 06:27:44,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:27:44,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153747413] [2021-11-20 06:27:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:27:44,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:27:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:44,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-20 06:27:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:44,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:27:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:44,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 06:27:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:27:44,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:27:44,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153747413] [2021-11-20 06:27:44,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153747413] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:27:44,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516186178] [2021-11-20 06:27:44,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:27:44,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:27:44,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:27:44,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:27:44,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:27:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:27:44,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:27:44,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:27:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:27:45,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:27:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:27:45,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516186178] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:27:45,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:27:45,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 8 [2021-11-20 06:27:45,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013708811] [2021-11-20 06:27:45,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:27:45,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:27:45,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:27:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:27:45,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:27:45,203 INFO L87 Difference]: Start difference. First operand 269 states and 334 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 06:27:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:27:45,549 INFO L93 Difference]: Finished difference Result 596 states and 792 transitions. [2021-11-20 06:27:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:27:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2021-11-20 06:27:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:27:45,554 INFO L225 Difference]: With dead ends: 596 [2021-11-20 06:27:45,554 INFO L226 Difference]: Without dead ends: 372 [2021-11-20 06:27:45,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:27:45,559 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 257 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:27:45,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 455 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:27:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-11-20 06:27:45,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 342. [2021-11-20 06:27:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 278 states have (on average 1.2302158273381294) internal successors, (342), 300 states have internal predecessors, (342), 31 states have call successors, (31), 27 states have call predecessors, (31), 32 states have return successors, (58), 28 states have call predecessors, (58), 31 states have call successors, (58) [2021-11-20 06:27:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 431 transitions. [2021-11-20 06:27:45,597 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 431 transitions. Word has length 67 [2021-11-20 06:27:45,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:27:45,597 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 431 transitions. [2021-11-20 06:27:45,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 06:27:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 431 transitions. [2021-11-20 06:27:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-20 06:27:45,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:27:45,600 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:27:45,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:27:45,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-20 06:27:45,825 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:27:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:27:45,825 INFO L85 PathProgramCache]: Analyzing trace with hash -761796008, now seen corresponding path program 2 times [2021-11-20 06:27:45,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:27:45,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219555204] [2021-11-20 06:27:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:27:45,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:27:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:27:45,851 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:27:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:27:45,920 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:27:45,920 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:27:45,921 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:27:45,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:27:45,927 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:27:45,931 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:27:46,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:27:46 BoogieIcfgContainer [2021-11-20 06:27:46,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:27:46,028 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:27:46,028 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:27:46,028 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:27:46,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:27:41" (3/4) ... [2021-11-20 06:27:46,030 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 06:27:46,176 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:27:46,177 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:27:46,177 INFO L158 Benchmark]: Toolchain (without parser) took 5710.41ms. Allocated memory was 100.7MB in the beginning and 146.8MB in the end (delta: 46.1MB). Free memory was 61.8MB in the beginning and 111.0MB in the end (delta: -49.2MB). Peak memory consumption was 63.2MB. Max. memory is 16.1GB. [2021-11-20 06:27:46,178 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 79.3MB in the beginning and 79.3MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:27:46,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 605.65ms. Allocated memory is still 100.7MB. Free memory was 61.6MB in the beginning and 68.1MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:27:46,179 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.17ms. Allocated memory is still 100.7MB. Free memory was 68.1MB in the beginning and 65.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:27:46,180 INFO L158 Benchmark]: Boogie Preprocessor took 41.92ms. Allocated memory is still 100.7MB. Free memory was 65.5MB in the beginning and 64.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:27:46,184 INFO L158 Benchmark]: RCFGBuilder took 531.92ms. Allocated memory is still 100.7MB. Free memory was 64.0MB in the beginning and 48.6MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 06:27:46,185 INFO L158 Benchmark]: TraceAbstraction took 4300.75ms. Allocated memory was 100.7MB in the beginning and 146.8MB in the end (delta: 46.1MB). Free memory was 48.0MB in the beginning and 48.5MB in the end (delta: -476.7kB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2021-11-20 06:27:46,186 INFO L158 Benchmark]: Witness Printer took 149.19ms. Allocated memory is still 146.8MB. Free memory was 48.5MB in the beginning and 111.0MB in the end (delta: -62.5MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-11-20 06:27:46,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 79.3MB in the beginning and 79.3MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 605.65ms. Allocated memory is still 100.7MB. Free memory was 61.6MB in the beginning and 68.1MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.17ms. Allocated memory is still 100.7MB. Free memory was 68.1MB in the beginning and 65.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.92ms. Allocated memory is still 100.7MB. Free memory was 65.5MB in the beginning and 64.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 531.92ms. Allocated memory is still 100.7MB. Free memory was 64.0MB in the beginning and 48.6MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4300.75ms. Allocated memory was 100.7MB in the beginning and 146.8MB in the end (delta: 46.1MB). Free memory was 48.0MB in the beginning and 48.5MB in the end (delta: -476.7kB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. * Witness Printer took 149.19ms. Allocated memory is still 146.8MB. Free memory was 48.5MB in the beginning and 111.0MB in the end (delta: -62.5MB). Peak memory consumption was 3.3MB. 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: 934]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L583] int cleanupTimeShifts = 4; [L752] int pumpRunning = 0; [L753] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L659] int retValue_acc ; [L660] int tmp ; [L664] FCALL select_helpers() [L665] FCALL select_features() [L666] CALL, EXPR valid_product() [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L666] RET, EXPR valid_product() [L666] tmp = valid_product() [L668] COND TRUE \read(tmp) [L670] FCALL setup() [L671] CALL runTest() [L653] CALL test() [L684] int splverifierCounter ; [L685] int tmp ; [L686] int tmp___0 ; [L687] int tmp___1 ; [L688] int tmp___2 ; [L691] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L693] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L695] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L701] tmp = __VERIFIER_nondet_int() [L703] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L705] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L705] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L711] tmp___0 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L721] tmp___2 = __VERIFIER_nondet_int() [L723] COND FALSE !(\read(tmp___2)) [L729] tmp___1 = __VERIFIER_nondet_int() [L731] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L738] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L759] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L766] COND TRUE \read(systemActive) [L768] CALL processEnvironment() [L788] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L791] COND TRUE ! pumpRunning [L793] CALL, EXPR isHighWaterLevel() [L903] int retValue_acc ; [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L909] RET, EXPR isHighWaterSensorDry() [L909] tmp = isHighWaterSensorDry() [L911] COND FALSE !(\read(tmp)) [L914] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L916] retValue_acc = tmp___0 [L917] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L793] RET, EXPR isHighWaterLevel() [L793] tmp = isHighWaterLevel() [L795] COND TRUE \read(tmp) [L797] CALL activatePump() [L822] int tmp ; [L826] CALL, EXPR isMethaneAlarm() [L847] int retValue_acc ; [L851] CALL, EXPR isMethaneLevelCritical() [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L851] RET, EXPR isMethaneLevelCritical() [L851] retValue_acc = isMethaneLevelCritical() [L853] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L826] RET, EXPR isMethaneAlarm() [L826] tmp = isMethaneAlarm() [L828] COND FALSE !(\read(tmp)) [L832] CALL activatePump__wrappee__highWaterSensor() [L816] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L832] RET activatePump__wrappee__highWaterSensor() [L797] RET activatePump() [L768] RET processEnvironment() [L774] CALL __utac_acc__Specification4_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L563] CALL, EXPR getWaterLevel() [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L563] RET, EXPR getWaterLevel() [L563] tmp = getWaterLevel() [L565] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L774] RET __utac_acc__Specification4_spec__1() [L738] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L693] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L695] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L701] tmp = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L711] tmp___0 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L721] tmp___2 = __VERIFIER_nondet_int() [L723] COND FALSE !(\read(tmp___2)) [L729] tmp___1 = __VERIFIER_nondet_int() [L731] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L738] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L759] COND TRUE \read(pumpRunning) [L761] CALL lowerWaterLevel() [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L761] RET lowerWaterLevel() [L766] COND TRUE \read(systemActive) [L768] CALL processEnvironment() [L788] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L791] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L806] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L768] RET processEnvironment() [L774] CALL __utac_acc__Specification4_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L563] CALL, EXPR getWaterLevel() [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L563] RET, EXPR getWaterLevel() [L563] tmp = getWaterLevel() [L565] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L774] RET __utac_acc__Specification4_spec__1() [L738] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L693] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L695] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L701] tmp = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L711] tmp___0 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L721] tmp___2 = __VERIFIER_nondet_int() [L723] COND FALSE !(\read(tmp___2)) [L729] tmp___1 = __VERIFIER_nondet_int() [L731] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L738] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L759] COND TRUE \read(pumpRunning) [L761] CALL lowerWaterLevel() [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L761] RET lowerWaterLevel() [L766] COND TRUE \read(systemActive) [L768] CALL processEnvironment() [L788] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L791] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L806] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L768] RET processEnvironment() [L774] CALL __utac_acc__Specification4_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L563] CALL, EXPR getWaterLevel() [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L563] RET, EXPR getWaterLevel() [L563] tmp = getWaterLevel() [L565] COND TRUE tmp == 0 [L567] CALL, EXPR isPumpRunning() [L858] int retValue_acc ; [L861] retValue_acc = pumpRunning [L862] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L567] RET, EXPR isPumpRunning() [L567] tmp___0 = isPumpRunning() [L569] COND TRUE \read(tmp___0) [L571] CALL __automaton_fail() [L934] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 951 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 937 mSDsluCounter, 2201 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1493 mSDsCounter, 143 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 614 IncrementalHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 143 mSolverCounterUnsat, 708 mSDtfsCounter, 614 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=342occurred in iteration=9, InterpolantAutomatonStates: 67, 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, 9 MinimizatonAttempts, 159 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 518 NumberOfCodeBlocks, 518 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 482 ConstructedInterpolants, 0 QuantifiedInterpolants, 960 SizeOfPredicates, 4 NumberOfNonLiveVariables, 408 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 72/85 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! [2021-11-20 06:27:46,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c696060-3a8f-4404-832a-b1e3ea306d38/bin/uautomizer-DQz5hQGWxF/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