./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD --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 0619cf376c55d0c5059a9fcafc1519de09a8e72548b38d7587e0bc4190ad2779 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:18:39,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:18:39,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:18:39,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:18:39,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:18:39,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:18:39,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:18:39,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:18:39,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:18:39,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:18:39,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:18:39,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:18:39,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:18:39,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:18:39,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:18:39,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:18:39,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:18:39,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:18:39,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:18:39,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:18:39,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:18:39,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:18:39,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:18:39,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:18:39,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:18:39,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:18:39,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:18:39,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:18:39,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:18:39,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:18:39,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:18:39,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:18:39,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:18:39,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:18:39,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:18:39,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:18:39,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:18:39,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:18:39,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:18:39,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:18:39,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:18:39,232 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:18:39,274 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:18:39,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:18:39,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:18:39,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:18:39,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:18:39,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:18:39,277 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:18:39,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:18:39,277 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:18:39,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:18:39,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:18:39,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:18:39,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:18:39,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:18:39,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:18:39,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:18:39,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:18:39,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:18:39,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:18:39,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:18:39,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:18:39,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:18:39,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:18:39,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:18:39,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:18:39,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:18:39,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:18:39,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:18:39,282 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:18:39,283 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:18:39,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:18:39,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:18:39,283 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_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0619cf376c55d0c5059a9fcafc1519de09a8e72548b38d7587e0bc4190ad2779 [2021-10-28 23:18:39,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:18:39,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:18:39,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:18:39,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:18:39,662 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:18:39,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2021-10-28 23:18:39,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/data/d15ab23df/3679f03d4b8342839840172549ab9df9/FLAG4fd12bd24 [2021-10-28 23:18:40,391 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:18:40,392 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2021-10-28 23:18:40,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/data/d15ab23df/3679f03d4b8342839840172549ab9df9/FLAG4fd12bd24 [2021-10-28 23:18:40,639 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/data/d15ab23df/3679f03d4b8342839840172549ab9df9 [2021-10-28 23:18:40,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:18:40,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:18:40,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:18:40,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:18:40,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:18:40,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:18:40" (1/1) ... [2021-10-28 23:18:40,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15916b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:40, skipping insertion in model container [2021-10-28 23:18:40,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:18:40" (1/1) ... [2021-10-28 23:18:40,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:18:40,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:18:41,153 WARN L228 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_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c[16710,16723] [2021-10-28 23:18:41,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:18:41,196 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:18:41,327 WARN L228 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_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c[16710,16723] [2021-10-28 23:18:41,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:18:41,379 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:18:41,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41 WrapperNode [2021-10-28 23:18:41,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:18:41,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:18:41,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:18:41,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:18:41,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:18:41,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:18:41,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:18:41,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:18:41,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:18:41,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:18:41,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:18:41,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:18:41,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (1/1) ... [2021-10-28 23:18:41,606 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:18:41,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:41,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:41,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:18:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:18:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:18:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:18:41,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:18:42,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:18:42,869 INFO L299 CfgBuilder]: Removed 196 assume(true) statements. [2021-10-28 23:18:42,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:18:42 BoogieIcfgContainer [2021-10-28 23:18:42,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:18:42,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:18:42,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:18:42,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:18:42,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:18:40" (1/3) ... [2021-10-28 23:18:42,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b397281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:18:42, skipping insertion in model container [2021-10-28 23:18:42,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:41" (2/3) ... [2021-10-28 23:18:42,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b397281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:18:42, skipping insertion in model container [2021-10-28 23:18:42,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:18:42" (3/3) ... [2021-10-28 23:18:42,886 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2021-10-28 23:18:42,894 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:18:42,894 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 23:18:42,980 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:18:42,988 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 [2021-10-28 23:18:42,988 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 23:18:43,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 127 states have (on average 1.5354330708661417) internal successors, (195), 130 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:43,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:18:43,019 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:43,020 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:43,021 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:43,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:43,029 INFO L85 PathProgramCache]: Analyzing trace with hash -330245923, now seen corresponding path program 1 times [2021-10-28 23:18:43,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:43,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723258341] [2021-10-28 23:18:43,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:43,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:43,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:43,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723258341] [2021-10-28 23:18:43,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723258341] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:43,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:43,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:18:43,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659864627] [2021-10-28 23:18:43,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:18:43,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:43,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:18:43,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:18:43,509 INFO L87 Difference]: Start difference. First operand has 131 states, 127 states have (on average 1.5354330708661417) internal successors, (195), 130 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:43,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:43,592 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2021-10-28 23:18:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:18:43,594 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-28 23:18:43,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:18:43,614 INFO L225 Difference]: With dead ends: 256 [2021-10-28 23:18:43,615 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 23:18:43,620 INFO L786 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 [2021-10-28 23:18:43,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 23:18:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-28 23:18:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 124 states have (on average 1.4758064516129032) internal successors, (183), 126 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2021-10-28 23:18:43,694 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 16 [2021-10-28 23:18:43,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:18:43,698 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2021-10-28 23:18:43,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:43,699 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2021-10-28 23:18:43,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:18:43,702 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:43,702 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:43,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:18:43,703 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:43,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:43,706 INFO L85 PathProgramCache]: Analyzing trace with hash 450073546, now seen corresponding path program 1 times [2021-10-28 23:18:43,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:43,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018107026] [2021-10-28 23:18:43,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:43,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:43,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:43,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018107026] [2021-10-28 23:18:43,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018107026] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:43,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:43,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:18:43,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436496827] [2021-10-28 23:18:43,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:18:43,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:43,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:18:43,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:18:43,931 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:43,953 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2021-10-28 23:18:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:18:43,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-28 23:18:43,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:18:43,956 INFO L225 Difference]: With dead ends: 127 [2021-10-28 23:18:43,957 INFO L226 Difference]: Without dead ends: 53 [2021-10-28 23:18:43,959 INFO L786 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 [2021-10-28 23:18:43,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-28 23:18:43,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-28 23:18:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2021-10-28 23:18:43,969 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 17 [2021-10-28 23:18:43,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:18:43,970 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2021-10-28 23:18:43,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:43,970 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2021-10-28 23:18:43,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:18:43,971 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:43,972 INFO L513 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] [2021-10-28 23:18:43,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:18:43,972 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:43,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:43,973 INFO L85 PathProgramCache]: Analyzing trace with hash 445162074, now seen corresponding path program 1 times [2021-10-28 23:18:43,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:43,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816745877] [2021-10-28 23:18:43,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:43,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:44,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:44,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816745877] [2021-10-28 23:18:44,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816745877] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:44,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:44,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:18:44,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494044868] [2021-10-28 23:18:44,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:18:44,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:44,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:18:44,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:18:44,094 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:44,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:44,364 INFO L93 Difference]: Finished difference Result 170 states and 250 transitions. [2021-10-28 23:18:44,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:18:44,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-28 23:18:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:18:44,371 INFO L225 Difference]: With dead ends: 170 [2021-10-28 23:18:44,372 INFO L226 Difference]: Without dead ends: 123 [2021-10-28 23:18:44,373 INFO L786 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 [2021-10-28 23:18:44,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-28 23:18:44,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 72. [2021-10-28 23:18:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 71 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2021-10-28 23:18:44,400 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 22 [2021-10-28 23:18:44,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:18:44,401 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2021-10-28 23:18:44,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2021-10-28 23:18:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:18:44,403 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:44,403 INFO L513 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] [2021-10-28 23:18:44,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:18:44,404 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:44,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:44,405 INFO L85 PathProgramCache]: Analyzing trace with hash 96758808, now seen corresponding path program 1 times [2021-10-28 23:18:44,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:44,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587524525] [2021-10-28 23:18:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:44,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:44,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:44,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587524525] [2021-10-28 23:18:44,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587524525] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:44,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:44,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:18:44,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945349445] [2021-10-28 23:18:44,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:18:44,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:44,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:18:44,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:18:44,529 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:44,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:44,569 INFO L93 Difference]: Finished difference Result 159 states and 234 transitions. [2021-10-28 23:18:44,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:18:44,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-28 23:18:44,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:18:44,571 INFO L225 Difference]: With dead ends: 159 [2021-10-28 23:18:44,571 INFO L226 Difference]: Without dead ends: 93 [2021-10-28 23:18:44,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:18:44,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-28 23:18:44,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2021-10-28 23:18:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4333333333333333) internal successors, (129), 90 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2021-10-28 23:18:44,596 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 24 [2021-10-28 23:18:44,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:18:44,597 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2021-10-28 23:18:44,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:44,597 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2021-10-28 23:18:44,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:18:44,598 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:44,599 INFO L513 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] [2021-10-28 23:18:44,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:18:44,599 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:44,600 INFO L85 PathProgramCache]: Analyzing trace with hash -732744145, now seen corresponding path program 1 times [2021-10-28 23:18:44,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:44,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096400573] [2021-10-28 23:18:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:44,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:44,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:44,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096400573] [2021-10-28 23:18:44,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096400573] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:44,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:44,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:18:44,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843360690] [2021-10-28 23:18:44,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:18:44,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:44,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:18:44,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:18:44,708 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:45,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:45,172 INFO L93 Difference]: Finished difference Result 585 states and 851 transitions. [2021-10-28 23:18:45,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:18:45,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-28 23:18:45,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:18:45,177 INFO L225 Difference]: With dead ends: 585 [2021-10-28 23:18:45,177 INFO L226 Difference]: Without dead ends: 500 [2021-10-28 23:18:45,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:18:45,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-28 23:18:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 227. [2021-10-28 23:18:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.3982300884955752) internal successors, (316), 226 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:45,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 316 transitions. [2021-10-28 23:18:45,244 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 316 transitions. Word has length 25 [2021-10-28 23:18:45,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:18:45,245 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 316 transitions. [2021-10-28 23:18:45,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:45,247 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 316 transitions. [2021-10-28 23:18:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 23:18:45,253 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:45,253 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:45,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:18:45,254 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:45,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:45,255 INFO L85 PathProgramCache]: Analyzing trace with hash 32404688, now seen corresponding path program 1 times [2021-10-28 23:18:45,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:45,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204103852] [2021-10-28 23:18:45,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:45,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:45,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:45,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:45,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204103852] [2021-10-28 23:18:45,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204103852] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:18:45,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874710219] [2021-10-28 23:18:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:45,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:18:45,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:45,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:18:45,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:18:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:45,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:18:45,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:18:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:45,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874710219] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:45,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:18:45,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-10-28 23:18:45,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617325769] [2021-10-28 23:18:45,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:18:45,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:45,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:18:45,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:18:45,780 INFO L87 Difference]: Start difference. First operand 227 states and 316 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:45,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:45,958 INFO L93 Difference]: Finished difference Result 508 states and 721 transitions. [2021-10-28 23:18:45,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:18:45,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-28 23:18:45,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:18:45,962 INFO L225 Difference]: With dead ends: 508 [2021-10-28 23:18:45,962 INFO L226 Difference]: Without dead ends: 349 [2021-10-28 23:18:45,963 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:18:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-10-28 23:18:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 337. [2021-10-28 23:18:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.4136904761904763) internal successors, (475), 336 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 475 transitions. [2021-10-28 23:18:46,000 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 475 transitions. Word has length 40 [2021-10-28 23:18:46,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:18:46,001 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 475 transitions. [2021-10-28 23:18:46,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 475 transitions. [2021-10-28 23:18:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 23:18:46,004 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:46,004 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-10-28 23:18:46,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:18:46,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:18:46,230 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:46,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:46,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2114560073, now seen corresponding path program 1 times [2021-10-28 23:18:46,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:46,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066207563] [2021-10-28 23:18:46,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:46,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:18:46,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:46,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066207563] [2021-10-28 23:18:46,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066207563] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:46,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:46,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:18:46,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014212116] [2021-10-28 23:18:46,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:18:46,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:18:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:18:46,320 INFO L87 Difference]: Start difference. First operand 337 states and 475 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:46,460 INFO L93 Difference]: Finished difference Result 1043 states and 1460 transitions. [2021-10-28 23:18:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:18:46,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-28 23:18:46,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:18:46,474 INFO L225 Difference]: With dead ends: 1043 [2021-10-28 23:18:46,474 INFO L226 Difference]: Without dead ends: 712 [2021-10-28 23:18:46,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:18:46,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-10-28 23:18:46,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 358. [2021-10-28 23:18:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.3893557422969187) internal successors, (496), 357 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:46,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 496 transitions. [2021-10-28 23:18:46,536 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 496 transitions. Word has length 51 [2021-10-28 23:18:46,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:18:46,537 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 496 transitions. [2021-10-28 23:18:46,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 496 transitions. [2021-10-28 23:18:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 23:18:46,543 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:46,543 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-10-28 23:18:46,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:18:46,544 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:46,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:46,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1478807349, now seen corresponding path program 1 times [2021-10-28 23:18:46,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:46,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544056085] [2021-10-28 23:18:46,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:46,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:18:46,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:46,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544056085] [2021-10-28 23:18:46,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544056085] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:46,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:46,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:18:46,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541994571] [2021-10-28 23:18:46,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:18:46,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:46,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:18:46,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:18:46,632 INFO L87 Difference]: Start difference. First operand 358 states and 496 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:46,760 INFO L93 Difference]: Finished difference Result 832 states and 1157 transitions. [2021-10-28 23:18:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:18:46,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-28 23:18:46,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:18:46,766 INFO L225 Difference]: With dead ends: 832 [2021-10-28 23:18:46,766 INFO L226 Difference]: Without dead ends: 480 [2021-10-28 23:18:46,768 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:18:46,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-10-28 23:18:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 312. [2021-10-28 23:18:46,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.3762057877813505) internal successors, (428), 311 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:46,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 428 transitions. [2021-10-28 23:18:46,815 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 428 transitions. Word has length 51 [2021-10-28 23:18:46,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:18:46,816 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 428 transitions. [2021-10-28 23:18:46,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:46,816 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 428 transitions. [2021-10-28 23:18:46,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-28 23:18:46,819 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:46,819 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:46,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:18:46,820 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:46,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:46,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1966410639, now seen corresponding path program 1 times [2021-10-28 23:18:46,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:46,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935077665] [2021-10-28 23:18:46,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:46,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:46,949 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:18:46,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:46,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935077665] [2021-10-28 23:18:46,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935077665] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:46,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:46,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:18:46,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120788911] [2021-10-28 23:18:46,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:18:46,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:46,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:18:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:18:46,971 INFO L87 Difference]: Start difference. First operand 312 states and 428 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:47,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:47,196 INFO L93 Difference]: Finished difference Result 829 states and 1141 transitions. [2021-10-28 23:18:47,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:18:47,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-28 23:18:47,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:18:47,206 INFO L225 Difference]: With dead ends: 829 [2021-10-28 23:18:47,206 INFO L226 Difference]: Without dead ends: 827 [2021-10-28 23:18:47,207 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:18:47,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-10-28 23:18:47,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 312. [2021-10-28 23:18:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.360128617363344) internal successors, (423), 311 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 423 transitions. [2021-10-28 23:18:47,256 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 423 transitions. Word has length 52 [2021-10-28 23:18:47,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:18:47,256 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 423 transitions. [2021-10-28 23:18:47,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 423 transitions. [2021-10-28 23:18:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 23:18:47,258 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:47,258 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:47,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:18:47,259 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:47,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:47,260 INFO L85 PathProgramCache]: Analyzing trace with hash 134497996, now seen corresponding path program 1 times [2021-10-28 23:18:47,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:47,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646194317] [2021-10-28 23:18:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:47,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:47,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:47,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646194317] [2021-10-28 23:18:47,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646194317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:18:47,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409853226] [2021-10-28 23:18:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:47,378 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:18:47,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:47,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:18:47,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:18:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:47,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:18:47,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:18:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:18:47,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409853226] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:18:47,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:18:47,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 23:18:47,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694536473] [2021-10-28 23:18:47,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:18:47,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:47,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:18:47,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:18:47,775 INFO L87 Difference]: Start difference. First operand 312 states and 423 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:48,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:48,056 INFO L93 Difference]: Finished difference Result 692 states and 939 transitions. [2021-10-28 23:18:48,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:18:48,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-28 23:18:48,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:18:48,061 INFO L225 Difference]: With dead ends: 692 [2021-10-28 23:18:48,061 INFO L226 Difference]: Without dead ends: 428 [2021-10-28 23:18:48,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:18:48,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-10-28 23:18:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 274. [2021-10-28 23:18:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.336996336996337) internal successors, (365), 273 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 365 transitions. [2021-10-28 23:18:48,103 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 365 transitions. Word has length 53 [2021-10-28 23:18:48,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:18:48,103 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 365 transitions. [2021-10-28 23:18:48,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:48,104 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 365 transitions. [2021-10-28 23:18:48,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-28 23:18:48,106 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:48,106 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:18:48,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:18:48,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 23:18:48,325 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:48,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:48,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1809371945, now seen corresponding path program 2 times [2021-10-28 23:18:48,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:48,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498327675] [2021-10-28 23:18:48,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:48,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:48,418 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:18:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:48,604 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:18:48,605 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:18:48,606 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:18:48,608 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:18:48,609 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:18:48,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:18:48,614 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:48,619 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:18:48,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:18:48 BoogieIcfgContainer [2021-10-28 23:18:48,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:18:48,881 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:18:48,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:18:48,881 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:18:48,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:18:42" (3/4) ... [2021-10-28 23:18:48,885 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:18:49,084 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:18:49,084 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:18:49,086 INFO L168 Benchmark]: Toolchain (without parser) took 8428.66 ms. Allocated memory was 88.1 MB in the beginning and 167.8 MB in the end (delta: 79.7 MB). Free memory was 67.7 MB in the beginning and 104.3 MB in the end (delta: -36.6 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:49,087 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory is still 64.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:18:49,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.82 ms. Allocated memory is still 88.1 MB. Free memory was 67.5 MB in the beginning and 56.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:49,088 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.91 ms. Allocated memory is still 88.1 MB. Free memory was 56.3 MB in the beginning and 52.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:49,089 INFO L168 Benchmark]: Boogie Preprocessor took 101.84 ms. Allocated memory is still 88.1 MB. Free memory was 52.1 MB in the beginning and 49.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:49,089 INFO L168 Benchmark]: RCFGBuilder took 1278.00 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 49.3 MB in the beginning and 55.6 MB in the end (delta: -6.3 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:49,090 INFO L168 Benchmark]: TraceAbstraction took 6003.47 ms. Allocated memory was 107.0 MB in the beginning and 167.8 MB in the end (delta: 60.8 MB). Free memory was 55.1 MB in the beginning and 132.6 MB in the end (delta: -77.6 MB). Peak memory consumption was 59.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:49,090 INFO L168 Benchmark]: Witness Printer took 203.34 ms. Allocated memory is still 167.8 MB. Free memory was 132.6 MB in the beginning and 104.3 MB in the end (delta: 28.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:49,096 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory is still 64.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 722.82 ms. Allocated memory is still 88.1 MB. Free memory was 67.5 MB in the beginning and 56.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.91 ms. Allocated memory is still 88.1 MB. Free memory was 56.3 MB in the beginning and 52.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 101.84 ms. Allocated memory is still 88.1 MB. Free memory was 52.1 MB in the beginning and 49.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1278.00 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 49.3 MB in the beginning and 55.6 MB in the end (delta: -6.3 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6003.47 ms. Allocated memory was 107.0 MB in the beginning and 167.8 MB in the end (delta: 60.8 MB). Free memory was 55.1 MB in the beginning and 132.6 MB in the end (delta: -77.6 MB). Peak memory consumption was 59.3 MB. Max. memory is 16.1 GB. * Witness Printer took 203.34 ms. Allocated memory is still 167.8 MB. Free memory was 132.6 MB in the beginning and 104.3 MB in the end (delta: 28.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * 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: 838]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L609] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L878] int waterLevel = 1; [L879] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L869] int retValue_acc ; [L872] retValue_acc = 1 [L873] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L156] int splverifierCounter ; [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L160] int tmp___2 ; [L163] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L165] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L167] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L173] tmp = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L896] COND TRUE waterLevel < 2 [L897] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L237] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L244] COND TRUE \read(systemActive) [L292] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L295] COND FALSE !(\read(pumpRunning)) [L266] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L269] COND TRUE ! pumpRunning [L406] int retValue_acc ; [L407] int tmp ; [L408] int tmp___0 ; [L958] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L961] COND FALSE !(waterLevel < 2) [L965] retValue_acc = 0 [L966] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L412] tmp = isHighWaterSensorDry() [L414] COND FALSE !(\read(tmp)) [L417] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L419] retValue_acc = tmp___0 [L420] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) [L325] int tmp ; [L350] int retValue_acc ; [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L354] retValue_acc = isMethaneLevelCritical() [L356] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L329] tmp = isMethaneAlarm() [L331] COND FALSE !(\read(tmp)) [L320] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L809] int tmp ; [L810] int tmp___0 ; [L949] int retValue_acc ; [L952] retValue_acc = waterLevel [L953] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L814] tmp = getWaterLevel() [L816] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L165] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L167] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L173] tmp = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L237] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L884] COND TRUE waterLevel > 0 [L885] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L244] COND TRUE \read(systemActive) [L292] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L295] COND TRUE \read(pumpRunning) [L350] int retValue_acc ; [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L354] retValue_acc = isMethaneLevelCritical() [L356] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L297] tmp = isMethaneAlarm() [L299] COND FALSE !(\read(tmp)) [L266] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L269] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L809] int tmp ; [L810] int tmp___0 ; [L949] int retValue_acc ; [L952] retValue_acc = waterLevel [L953] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L814] tmp = getWaterLevel() [L816] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L167] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L173] tmp = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L237] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L884] COND TRUE waterLevel > 0 [L885] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L244] COND TRUE \read(systemActive) [L292] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L295] COND TRUE \read(pumpRunning) [L350] int retValue_acc ; [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L354] retValue_acc = isMethaneLevelCritical() [L356] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L297] tmp = isMethaneAlarm() [L299] COND FALSE !(\read(tmp)) [L266] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L269] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L809] int tmp ; [L810] int tmp___0 ; [L949] int retValue_acc ; [L952] retValue_acc = waterLevel [L953] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L814] tmp = getWaterLevel() [L816] COND TRUE tmp == 0 [L361] int retValue_acc ; [L364] retValue_acc = pumpRunning [L365] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L818] tmp___0 = isPumpRunning() [L820] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L838] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 838]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 838]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1163 SDtfs, 1881 SDslu, 2148 SDs, 0 SdLazy, 315 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=7, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 1529 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 516 NumberOfCodeBlocks, 516 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 432 ConstructedInterpolants, 0 QuantifiedInterpolants, 818 SizeOfPredicates, 3 NumberOfNonLiveVariables, 814 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 87/98 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! [2021-10-28 23:18:49,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f7ac16-98e8-45e4-bc53-00f0c001ceb2/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...