./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be --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 5399744cbc243992ccbbf21bf0e09dd5dced55fce1050770392b2964c31c4145 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-e943c26 [2021-10-21 19:04:15,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:04:15,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:04:15,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:04:15,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:04:15,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:04:15,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:04:15,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:04:15,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:04:15,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:04:15,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:04:15,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:04:15,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:04:15,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:04:15,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:04:15,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:04:15,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:04:15,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:04:15,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:04:15,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:04:15,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:04:15,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:04:15,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:04:15,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:04:15,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:04:15,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:04:15,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:04:15,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:04:15,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:04:15,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:04:15,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:04:15,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:04:15,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:04:15,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:04:15,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:04:15,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:04:15,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:04:15,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:04:15,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:04:15,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:04:15,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:04:15,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:04:15,401 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:04:15,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:04:15,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:04:15,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:04:15,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:04:15,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:04:15,403 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:04:15,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:04:15,403 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:04:15,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:04:15,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:04:15,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:04:15,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:04:15,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:04:15,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:04:15,405 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:04:15,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:04:15,405 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:04:15,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:04:15,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:04:15,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:04:15,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:04:15,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:04:15,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:04:15,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:04:15,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:04:15,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:04:15,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:04:15,408 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:04:15,408 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:04:15,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:04:15,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:04:15,438 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_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5399744cbc243992ccbbf21bf0e09dd5dced55fce1050770392b2964c31c4145 [2021-10-21 19:04:15,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:04:15,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:04:15,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:04:15,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:04:15,753 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:04:15,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2021-10-21 19:04:15,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/data/e3e6d1318/9821a96a674943dd9d4f0ce950a17f4b/FLAGf0b7aa498 [2021-10-21 19:04:16,380 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:04:16,381 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2021-10-21 19:04:16,394 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/data/e3e6d1318/9821a96a674943dd9d4f0ce950a17f4b/FLAGf0b7aa498 [2021-10-21 19:04:16,668 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/data/e3e6d1318/9821a96a674943dd9d4f0ce950a17f4b [2021-10-21 19:04:16,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:04:16,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:04:16,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:04:16,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:04:16,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:04:16,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:04:16" (1/1) ... [2021-10-21 19:04:16,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b56a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:16, skipping insertion in model container [2021-10-21 19:04:16,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:04:16" (1/1) ... [2021-10-21 19:04:16,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:04:16,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:04:17,015 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_55c23790-1db9-4239-8409-5c165fb81daa/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c[17260,17273] [2021-10-21 19:04:17,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:04:17,029 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:04:17,110 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_55c23790-1db9-4239-8409-5c165fb81daa/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c[17260,17273] [2021-10-21 19:04:17,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:04:17,130 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:04:17,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:17 WrapperNode [2021-10-21 19:04:17,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:04:17,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:04:17,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:04:17,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:04:17,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:17" (1/1) ... [2021-10-21 19:04:17,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:17" (1/1) ... [2021-10-21 19:04:17,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:04:17,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:04:17,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:04:17,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:04:17,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:17" (1/1) ... [2021-10-21 19:04:17,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:17" (1/1) ... [2021-10-21 19:04:17,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:17" (1/1) ... [2021-10-21 19:04:17,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:17" (1/1) ... [2021-10-21 19:04:17,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:17" (1/1) ... [2021-10-21 19:04:17,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:17" (1/1) ... [2021-10-21 19:04:17,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:17" (1/1) ... [2021-10-21 19:04:17,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:04:17,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:04:17,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:04:17,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:04:17,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:17" (1/1) ... [2021-10-21 19:04:17,263 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:04:17,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:04:17,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:04:17,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:04:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:04:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:04:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:04:17,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:04:18,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:04:18,153 INFO L299 CfgBuilder]: Removed 96 assume(true) statements. [2021-10-21 19:04:18,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:04:18 BoogieIcfgContainer [2021-10-21 19:04:18,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:04:18,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:04:18,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:04:18,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:04:18,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:04:16" (1/3) ... [2021-10-21 19:04:18,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739e40c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:04:18, skipping insertion in model container [2021-10-21 19:04:18,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:04:17" (2/3) ... [2021-10-21 19:04:18,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739e40c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:04:18, skipping insertion in model container [2021-10-21 19:04:18,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:04:18" (3/3) ... [2021-10-21 19:04:18,164 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2021-10-21 19:04:18,169 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:04:18,169 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-21 19:04:18,217 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:04:18,224 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 [2021-10-21 19:04:18,224 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 19:04:18,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 74 states have (on average 1.5810810810810811) internal successors, (117), 77 states have internal predecessors, (117), 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) [2021-10-21 19:04:18,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:04:18,246 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:04:18,246 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:04:18,247 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:04:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:18,252 INFO L82 PathProgramCache]: Analyzing trace with hash 768274677, now seen corresponding path program 1 times [2021-10-21 19:04:18,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:18,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912517766] [2021-10-21 19:04:18,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:18,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:18,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:18,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912517766] [2021-10-21 19:04:18,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912517766] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:18,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:18,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:04:18,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429463282] [2021-10-21 19:04:18,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:04:18,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:18,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:04:18,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:04:18,633 INFO L87 Difference]: Start difference. First operand has 78 states, 74 states have (on average 1.5810810810810811) internal successors, (117), 77 states have internal predecessors, (117), 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) [2021-10-21 19:04:18,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:04:18,657 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2021-10-21 19:04:18,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:04:18,658 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 [2021-10-21 19:04:18,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:04:18,668 INFO L225 Difference]: With dead ends: 150 [2021-10-21 19:04:18,668 INFO L226 Difference]: Without dead ends: 74 [2021-10-21 19:04:18,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:04:18,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-21 19:04:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-21 19:04:18,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 73 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) [2021-10-21 19:04:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2021-10-21 19:04:18,710 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2021-10-21 19:04:18,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:04:18,710 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-10-21 19:04:18,711 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) [2021-10-21 19:04:18,711 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2021-10-21 19:04:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:04:18,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:04:18,712 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:04:18,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:04:18,713 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:04:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:18,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1484097871, now seen corresponding path program 1 times [2021-10-21 19:04:18,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:18,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496222605] [2021-10-21 19:04:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:18,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:18,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:18,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496222605] [2021-10-21 19:04:18,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496222605] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:18,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:18,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:04:18,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408843182] [2021-10-21 19:04:18,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:04:18,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:04:18,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:04:18,837 INFO L87 Difference]: Start difference. First operand 74 states and 105 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) [2021-10-21 19:04:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:04:18,855 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2021-10-21 19:04:18,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:04:18,855 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 [2021-10-21 19:04:18,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:04:18,857 INFO L225 Difference]: With dead ends: 74 [2021-10-21 19:04:18,858 INFO L226 Difference]: Without dead ends: 34 [2021-10-21 19:04:18,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:04:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-21 19:04:18,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-21 19:04:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 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) [2021-10-21 19:04:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2021-10-21 19:04:18,869 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2021-10-21 19:04:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:04:18,869 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2021-10-21 19:04:18,870 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) [2021-10-21 19:04:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2021-10-21 19:04:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:04:18,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:04:18,872 INFO L512 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] [2021-10-21 19:04:18,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:04:18,873 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:04:18,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:18,876 INFO L82 PathProgramCache]: Analyzing trace with hash 670124178, now seen corresponding path program 1 times [2021-10-21 19:04:18,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:18,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852852948] [2021-10-21 19:04:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:18,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:19,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:19,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852852948] [2021-10-21 19:04:19,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852852948] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:19,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:19,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:04:19,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200188780] [2021-10-21 19:04:19,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:04:19,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:19,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:04:19,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:04:19,049 INFO L87 Difference]: Start difference. First operand 34 states and 48 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) [2021-10-21 19:04:19,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:04:19,228 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2021-10-21 19:04:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:04:19,228 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 [2021-10-21 19:04:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:04:19,229 INFO L225 Difference]: With dead ends: 62 [2021-10-21 19:04:19,229 INFO L226 Difference]: Without dead ends: 34 [2021-10-21 19:04:19,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.8ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:04:19,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-21 19:04:19,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-21 19:04:19,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 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) [2021-10-21 19:04:19,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2021-10-21 19:04:19,235 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2021-10-21 19:04:19,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:04:19,236 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2021-10-21 19:04:19,236 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) [2021-10-21 19:04:19,236 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2021-10-21 19:04:19,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:04:19,237 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:04:19,237 INFO L512 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] [2021-10-21 19:04:19,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:04:19,238 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:04:19,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:19,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1804645939, now seen corresponding path program 1 times [2021-10-21 19:04:19,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:19,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042106144] [2021-10-21 19:04:19,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:19,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:19,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:19,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:19,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042106144] [2021-10-21 19:04:19,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042106144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:19,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:19,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:04:19,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725092830] [2021-10-21 19:04:19,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:04:19,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:19,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:04:19,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:04:19,293 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2021-10-21 19:04:19,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:04:19,313 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2021-10-21 19:04:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:04:19,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2021-10-21 19:04:19,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:04:19,319 INFO L225 Difference]: With dead ends: 83 [2021-10-21 19:04:19,320 INFO L226 Difference]: Without dead ends: 55 [2021-10-21 19:04:19,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:04:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-21 19:04:19,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-10-21 19:04:19,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 52 states have internal predecessors, (74), 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) [2021-10-21 19:04:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2021-10-21 19:04:19,337 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2021-10-21 19:04:19,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:04:19,338 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2021-10-21 19:04:19,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2021-10-21 19:04:19,338 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2021-10-21 19:04:19,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 19:04:19,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:04:19,340 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:04:19,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:04:19,341 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:04:19,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:19,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1746371458, now seen corresponding path program 1 times [2021-10-21 19:04:19,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:19,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513151855] [2021-10-21 19:04:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:19,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:19,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:19,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513151855] [2021-10-21 19:04:19,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513151855] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:19,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:19,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:04:19,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593171737] [2021-10-21 19:04:19,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:04:19,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:19,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:04:19,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:04:19,457 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-10-21 19:04:19,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:04:19,557 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2021-10-21 19:04:19,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:04:19,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2021-10-21 19:04:19,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:04:19,559 INFO L225 Difference]: With dead ends: 139 [2021-10-21 19:04:19,559 INFO L226 Difference]: Without dead ends: 92 [2021-10-21 19:04:19,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:04:19,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-21 19:04:19,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2021-10-21 19:04:19,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 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) [2021-10-21 19:04:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2021-10-21 19:04:19,568 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2021-10-21 19:04:19,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:04:19,568 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2021-10-21 19:04:19,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-10-21 19:04:19,569 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2021-10-21 19:04:19,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 19:04:19,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:04:19,570 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:04:19,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:04:19,570 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:04:19,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:19,571 INFO L82 PathProgramCache]: Analyzing trace with hash 916139585, now seen corresponding path program 1 times [2021-10-21 19:04:19,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:19,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501082419] [2021-10-21 19:04:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:19,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:19,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:19,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501082419] [2021-10-21 19:04:19,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501082419] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:19,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:19,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:04:19,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991115702] [2021-10-21 19:04:19,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:04:19,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:19,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:04:19,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:04:19,673 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-10-21 19:04:20,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:04:20,095 INFO L93 Difference]: Finished difference Result 347 states and 497 transitions. [2021-10-21 19:04:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:04:20,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 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 29 [2021-10-21 19:04:20,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:04:20,104 INFO L225 Difference]: With dead ends: 347 [2021-10-21 19:04:20,105 INFO L226 Difference]: Without dead ends: 297 [2021-10-21 19:04:20,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 100.5ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:04:20,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-10-21 19:04:20,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 140. [2021-10-21 19:04:20,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.3669064748201438) internal successors, (190), 139 states have internal predecessors, (190), 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) [2021-10-21 19:04:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2021-10-21 19:04:20,159 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 29 [2021-10-21 19:04:20,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:04:20,160 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2021-10-21 19:04:20,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-10-21 19:04:20,160 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2021-10-21 19:04:20,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-21 19:04:20,162 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:04:20,162 INFO L512 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] [2021-10-21 19:04:20,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:04:20,163 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:04:20,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:20,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1650264504, now seen corresponding path program 1 times [2021-10-21 19:04:20,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:20,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180284034] [2021-10-21 19:04:20,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:20,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:04:20,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:20,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180284034] [2021-10-21 19:04:20,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180284034] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:04:20,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:04:20,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:04:20,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930879812] [2021-10-21 19:04:20,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:04:20,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:20,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:04:20,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:04:20,253 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-10-21 19:04:20,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:04:20,345 INFO L93 Difference]: Finished difference Result 325 states and 442 transitions. [2021-10-21 19:04:20,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:04:20,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 44 [2021-10-21 19:04:20,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:04:20,348 INFO L225 Difference]: With dead ends: 325 [2021-10-21 19:04:20,348 INFO L226 Difference]: Without dead ends: 191 [2021-10-21 19:04:20,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 44.2ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:04:20,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-21 19:04:20,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 120. [2021-10-21 19:04:20,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.3445378151260505) internal successors, (160), 119 states have internal predecessors, (160), 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) [2021-10-21 19:04:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 160 transitions. [2021-10-21 19:04:20,384 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 160 transitions. Word has length 44 [2021-10-21 19:04:20,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:04:20,386 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 160 transitions. [2021-10-21 19:04:20,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-10-21 19:04:20,387 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 160 transitions. [2021-10-21 19:04:20,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-21 19:04:20,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:04:20,394 INFO L512 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] [2021-10-21 19:04:20,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:04:20,395 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:04:20,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:20,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1693810360, now seen corresponding path program 1 times [2021-10-21 19:04:20,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:20,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043081963] [2021-10-21 19:04:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:20,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:20,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:04:20,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043081963] [2021-10-21 19:04:20,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043081963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:04:20,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386412731] [2021-10-21 19:04:20,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:20,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:04:20,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:04:20,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:04:20,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:04:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:04:20,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:04:20,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:04:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:04:20,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386412731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:04:20,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:04:20,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-21 19:04:20,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608383774] [2021-10-21 19:04:20,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:04:20,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:04:20,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:04:20,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:04:20,870 INFO L87 Difference]: Start difference. First operand 120 states and 160 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2021-10-21 19:04:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:04:21,081 INFO L93 Difference]: Finished difference Result 337 states and 464 transitions. [2021-10-21 19:04:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:04:21,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 45 [2021-10-21 19:04:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:04:21,084 INFO L225 Difference]: With dead ends: 337 [2021-10-21 19:04:21,085 INFO L226 Difference]: Without dead ends: 246 [2021-10-21 19:04:21,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:04:21,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-10-21 19:04:21,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 159. [2021-10-21 19:04:21,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.3354430379746836) internal successors, (211), 158 states have internal predecessors, (211), 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) [2021-10-21 19:04:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 211 transitions. [2021-10-21 19:04:21,120 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 211 transitions. Word has length 45 [2021-10-21 19:04:21,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:04:21,120 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 211 transitions. [2021-10-21 19:04:21,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2021-10-21 19:04:21,121 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 211 transitions. [2021-10-21 19:04:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-21 19:04:21,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:04:21,124 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-21 19:04:21,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:04:21,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:04:21,339 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:04:21,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:04:21,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1880584764, now seen corresponding path program 2 times [2021-10-21 19:04:21,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:04:21,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501689395] [2021-10-21 19:04:21,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:04:21,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:04:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:04:21,403 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:04:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:04:21,523 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:04:21,523 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:04:21,525 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:04:21,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:04:21,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:04:21,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:04:21,535 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:04:21,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:04:21 BoogieIcfgContainer [2021-10-21 19:04:21,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:04:21,734 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:04:21,737 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:04:21,737 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:04:21,738 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:04:18" (3/4) ... [2021-10-21 19:04:21,739 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:04:21,880 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:04:21,880 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:04:21,882 INFO L168 Benchmark]: Toolchain (without parser) took 5209.29 ms. Allocated memory was 88.1 MB in the beginning and 167.8 MB in the end (delta: 79.7 MB). Free memory was 64.0 MB in the beginning and 100.3 MB in the end (delta: -36.3 MB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:21,882 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 62.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:04:21,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 458.14 ms. Allocated memory was 88.1 MB in the beginning and 127.9 MB in the end (delta: 39.8 MB). Free memory was 63.7 MB in the beginning and 90.9 MB in the end (delta: -27.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:21,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.69 ms. Allocated memory is still 127.9 MB. Free memory was 90.9 MB in the beginning and 88.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:21,884 INFO L168 Benchmark]: Boogie Preprocessor took 39.59 ms. Allocated memory is still 127.9 MB. Free memory was 88.0 MB in the beginning and 85.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:21,884 INFO L168 Benchmark]: RCFGBuilder took 913.65 ms. Allocated memory is still 127.9 MB. Free memory was 85.9 MB in the beginning and 79.8 MB in the end (delta: 6.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:21,884 INFO L168 Benchmark]: TraceAbstraction took 3576.65 ms. Allocated memory was 127.9 MB in the beginning and 167.8 MB in the end (delta: 39.8 MB). Free memory was 79.2 MB in the beginning and 123.3 MB in the end (delta: -44.2 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:21,885 INFO L168 Benchmark]: Witness Printer took 146.29 ms. Allocated memory is still 167.8 MB. Free memory was 123.3 MB in the beginning and 100.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:04:21,888 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 62.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 458.14 ms. Allocated memory was 88.1 MB in the beginning and 127.9 MB in the end (delta: 39.8 MB). Free memory was 63.7 MB in the beginning and 90.9 MB in the end (delta: -27.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.69 ms. Allocated memory is still 127.9 MB. Free memory was 90.9 MB in the beginning and 88.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.59 ms. Allocated memory is still 127.9 MB. Free memory was 88.0 MB in the beginning and 85.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 913.65 ms. Allocated memory is still 127.9 MB. Free memory was 85.9 MB in the beginning and 79.8 MB in the end (delta: 6.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3576.65 ms. Allocated memory was 127.9 MB in the beginning and 167.8 MB in the end (delta: 39.8 MB). Free memory was 79.2 MB in the beginning and 123.3 MB in the end (delta: -44.2 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. * Witness Printer took 146.29 ms. Allocated memory is still 167.8 MB. Free memory was 123.3 MB in the beginning and 100.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 879]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int cleanupTimeShifts = 4; [L625] int waterLevel = 1; [L626] int methaneLevelCritical = 0; [L722] int pumpRunning = 0; [L723] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L497] int retValue_acc ; [L498] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L504] tmp = valid_product() [L506] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L556] int splverifierCounter ; [L557] int tmp ; [L558] int tmp___0 ; [L559] int tmp___1 ; [L560] int tmp___2 ; [L563] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L565] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L567] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L573] tmp = __VERIFIER_nondet_int() [L575] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L643] COND TRUE waterLevel < 2 [L644] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L730] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L737] COND TRUE \read(systemActive) [L759] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L762] COND TRUE ! pumpRunning [L856] int retValue_acc ; [L857] int tmp ; [L858] int tmp___0 ; [L705] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L708] COND FALSE !(waterLevel < 2) [L712] retValue_acc = 0 [L713] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L862] tmp = isHighWaterSensorDry() [L864] COND FALSE !(\read(tmp)) [L867] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L869] retValue_acc = tmp___0 [L870] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L764] tmp = isHighWaterLevel() [L766] COND TRUE \read(tmp) [L787] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L885] int tmp ; [L886] int tmp___0 ; [L696] int retValue_acc ; [L699] retValue_acc = waterLevel [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L890] tmp = getWaterLevel() [L892] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L565] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L567] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L573] tmp = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L730] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L631] COND TRUE waterLevel > 0 [L632] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L737] COND TRUE \read(systemActive) [L759] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L762] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L885] int tmp ; [L886] int tmp___0 ; [L696] int retValue_acc ; [L699] retValue_acc = waterLevel [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L890] tmp = getWaterLevel() [L892] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L565] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L567] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L573] tmp = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L730] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L631] COND TRUE waterLevel > 0 [L632] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L737] COND TRUE \read(systemActive) [L759] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L762] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L885] int tmp ; [L886] int tmp___0 ; [L696] int retValue_acc ; [L699] retValue_acc = waterLevel [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L890] tmp = getWaterLevel() [L892] COND TRUE tmp == 0 [L811] int retValue_acc ; [L814] retValue_acc = pumpRunning [L815] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L894] tmp___0 = isPumpRunning() [L896] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L879] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 879]: 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: 879]: 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, 78 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3316.7ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 28.6ms, AutomataDifference: 1151.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 552 SDtfs, 1004 SDslu, 848 SDs, 0 SdLazy, 181 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 522.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 290.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=8, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 181.8ms AutomataMinimizationTime, 8 MinimizatonAttempts, 353 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 59.6ms SsaConstructionTime, 442.2ms SatisfiabilityAnalysisTime, 807.4ms InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 517 SizeOfPredicates, 3 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 36/42 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! [2021-10-21 19:04:21,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55c23790-1db9-4239-8409-5c165fb81daa/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...