./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer --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 51759f83c5c8a18147c4d3cfcc22a931ec36cde5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-a4ecdab [2020-11-29 20:28:29,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:28:29,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:28:29,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:28:29,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:28:29,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:28:29,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:28:29,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:28:29,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:28:29,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:28:29,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:28:29,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:28:29,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:28:29,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:28:29,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:28:29,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:28:29,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:28:29,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:28:29,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:28:29,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:28:29,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:28:29,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:28:29,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:28:29,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:28:29,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:28:29,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:28:29,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:28:29,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:28:29,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:28:29,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:28:29,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:28:29,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:28:29,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:28:29,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:28:29,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:28:29,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:28:29,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:28:29,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:28:29,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:28:29,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:28:29,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:28:29,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:28:29,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:28:29,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:28:29,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:28:29,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:28:29,228 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:28:29,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:28:29,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:28:29,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:28:29,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:28:29,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:28:29,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:28:29,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:28:29,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:28:29,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:28:29,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:28:29,231 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:28:29,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:28:29,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:28:29,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:28:29,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:28:29,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:28:29,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:28:29,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:28:29,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:28:29,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:28:29,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:28:29,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:28:29,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:28:29,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:28:29,241 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-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51759f83c5c8a18147c4d3cfcc22a931ec36cde5 [2020-11-29 20:28:29,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:28:29,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:28:29,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:28:29,558 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:28:29,559 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:28:29,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2020-11-29 20:28:29,625 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer/data/2dc4a7954/1e87627f2a0c4220849745d8fef77b85/FLAGe097a2501 [2020-11-29 20:28:30,082 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:28:30,083 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2020-11-29 20:28:30,100 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer/data/2dc4a7954/1e87627f2a0c4220849745d8fef77b85/FLAGe097a2501 [2020-11-29 20:28:30,438 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer/data/2dc4a7954/1e87627f2a0c4220849745d8fef77b85 [2020-11-29 20:28:30,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:28:30,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:28:30,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:28:30,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:28:30,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:28:30,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:28:30" (1/1) ... [2020-11-29 20:28:30,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af40c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:30, skipping insertion in model container [2020-11-29 20:28:30,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:28:30" (1/1) ... [2020-11-29 20:28:30,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:28:30,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:28:30,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:28:30,927 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:28:30,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:28:31,030 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:28:31,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:31 WrapperNode [2020-11-29 20:28:31,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:28:31,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:28:31,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:28:31,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:28:31,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:31" (1/1) ... [2020-11-29 20:28:31,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:31" (1/1) ... [2020-11-29 20:28:31,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:28:31,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:28:31,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:28:31,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:28:31,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:31" (1/1) ... [2020-11-29 20:28:31,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:31" (1/1) ... [2020-11-29 20:28:31,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:31" (1/1) ... [2020-11-29 20:28:31,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:31" (1/1) ... [2020-11-29 20:28:31,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:31" (1/1) ... [2020-11-29 20:28:31,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:31" (1/1) ... [2020-11-29 20:28:31,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:31" (1/1) ... [2020-11-29 20:28:31,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:28:31,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:28:31,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:28:31,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:28:31,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:28:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:28:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:28:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:28:31,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:28:32,291 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:28:32,291 INFO L298 CfgBuilder]: Removed 162 assume(true) statements. [2020-11-29 20:28:32,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:28:32 BoogieIcfgContainer [2020-11-29 20:28:32,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:28:32,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:28:32,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:28:32,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:28:32,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:28:30" (1/3) ... [2020-11-29 20:28:32,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493b8381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:28:32, skipping insertion in model container [2020-11-29 20:28:32,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:31" (2/3) ... [2020-11-29 20:28:32,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493b8381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:28:32, skipping insertion in model container [2020-11-29 20:28:32,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:28:32" (3/3) ... [2020-11-29 20:28:32,303 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2020-11-29 20:28:32,315 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:28:32,320 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 20:28:32,333 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 20:28:32,360 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:28:32,361 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:28:32,361 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:28:32,361 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:28:32,361 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:28:32,361 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:28:32,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:28:32,362 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:28:32,380 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states. [2020-11-29 20:28:32,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:28:32,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:32,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:32,387 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:32,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:32,394 INFO L82 PathProgramCache]: Analyzing trace with hash -948451738, now seen corresponding path program 1 times [2020-11-29 20:28:32,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:32,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947914926] [2020-11-29 20:28:32,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:32,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:32,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947914926] [2020-11-29 20:28:32,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:32,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:28:32,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296085040] [2020-11-29 20:28:32,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:28:32,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:32,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:28:32,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:28:32,681 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 2 states. [2020-11-29 20:28:32,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:32,736 INFO L93 Difference]: Finished difference Result 231 states and 350 transitions. [2020-11-29 20:28:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:28:32,738 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-29 20:28:32,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:32,754 INFO L225 Difference]: With dead ends: 231 [2020-11-29 20:28:32,755 INFO L226 Difference]: Without dead ends: 113 [2020-11-29 20:28:32,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:28:32,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-29 20:28:32,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-11-29 20:28:32,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 20:28:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2020-11-29 20:28:32,811 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 16 [2020-11-29 20:28:32,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:32,812 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2020-11-29 20:28:32,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:28:32,812 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2020-11-29 20:28:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 20:28:32,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:32,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:32,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:28:32,814 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:32,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:32,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1995208635, now seen corresponding path program 1 times [2020-11-29 20:28:32,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:32,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88160755] [2020-11-29 20:28:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:32,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88160755] [2020-11-29 20:28:32,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:32,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:28:32,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914428532] [2020-11-29 20:28:32,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:28:32,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:32,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:28:32,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:28:32,999 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand 3 states. [2020-11-29 20:28:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:33,012 INFO L93 Difference]: Finished difference Result 113 states and 165 transitions. [2020-11-29 20:28:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:28:33,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-29 20:28:33,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:33,014 INFO L225 Difference]: With dead ends: 113 [2020-11-29 20:28:33,014 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 20:28:33,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:28:33,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 20:28:33,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-29 20:28:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 20:28:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-11-29 20:28:33,026 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-11-29 20:28:33,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:33,026 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-11-29 20:28:33,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:28:33,027 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-11-29 20:28:33,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:28:33,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:33,030 INFO L422 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] [2020-11-29 20:28:33,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:28:33,032 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:33,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:33,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1404483435, now seen corresponding path program 1 times [2020-11-29 20:28:33,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:33,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651936641] [2020-11-29 20:28:33,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:33,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651936641] [2020-11-29 20:28:33,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:33,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:28:33,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564001371] [2020-11-29 20:28:33,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:28:33,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:33,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:28:33,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:28:33,177 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 6 states. [2020-11-29 20:28:33,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:33,482 INFO L93 Difference]: Finished difference Result 88 states and 130 transitions. [2020-11-29 20:28:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:28:33,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-29 20:28:33,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:33,483 INFO L225 Difference]: With dead ends: 88 [2020-11-29 20:28:33,483 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 20:28:33,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:28:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 20:28:33,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-29 20:28:33,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 20:28:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2020-11-29 20:28:33,495 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 22 [2020-11-29 20:28:33,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:33,496 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2020-11-29 20:28:33,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:28:33,497 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2020-11-29 20:28:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 20:28:33,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:33,499 INFO L422 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] [2020-11-29 20:28:33,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:28:33,499 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:33,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:33,501 INFO L82 PathProgramCache]: Analyzing trace with hash -764351347, now seen corresponding path program 1 times [2020-11-29 20:28:33,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:33,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724539831] [2020-11-29 20:28:33,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:33,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724539831] [2020-11-29 20:28:33,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:33,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:28:33,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210550574] [2020-11-29 20:28:33,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:28:33,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:33,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:28:33,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:28:33,601 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand 3 states. [2020-11-29 20:28:33,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:33,662 INFO L93 Difference]: Finished difference Result 109 states and 158 transitions. [2020-11-29 20:28:33,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:28:33,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-29 20:28:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:33,664 INFO L225 Difference]: With dead ends: 109 [2020-11-29 20:28:33,664 INFO L226 Difference]: Without dead ends: 68 [2020-11-29 20:28:33,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:28:33,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-29 20:28:33,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-11-29 20:28:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-29 20:28:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2020-11-29 20:28:33,675 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 24 [2020-11-29 20:28:33,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:33,676 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2020-11-29 20:28:33,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:28:33,676 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2020-11-29 20:28:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 20:28:33,679 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:33,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:33,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:28:33,679 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:33,680 INFO L82 PathProgramCache]: Analyzing trace with hash -805303330, now seen corresponding path program 1 times [2020-11-29 20:28:33,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:33,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115005545] [2020-11-29 20:28:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:33,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115005545] [2020-11-29 20:28:33,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:33,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:28:33,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572241193] [2020-11-29 20:28:33,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:28:33,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:33,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:28:33,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:28:33,753 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand 5 states. [2020-11-29 20:28:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:33,835 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2020-11-29 20:28:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:28:33,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-29 20:28:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:33,837 INFO L225 Difference]: With dead ends: 175 [2020-11-29 20:28:33,838 INFO L226 Difference]: Without dead ends: 115 [2020-11-29 20:28:33,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:28:33,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-29 20:28:33,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 72. [2020-11-29 20:28:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-29 20:28:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2020-11-29 20:28:33,861 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 30 [2020-11-29 20:28:33,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:33,866 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2020-11-29 20:28:33,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:28:33,867 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2020-11-29 20:28:33,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 20:28:33,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:33,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:33,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:28:33,868 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:33,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:33,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1857207713, now seen corresponding path program 1 times [2020-11-29 20:28:33,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:33,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538351232] [2020-11-29 20:28:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:33,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538351232] [2020-11-29 20:28:33,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:33,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:28:33,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650089816] [2020-11-29 20:28:33,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:28:33,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:33,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:28:33,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:28:33,963 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand 5 states. [2020-11-29 20:28:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:34,083 INFO L93 Difference]: Finished difference Result 382 states and 538 transitions. [2020-11-29 20:28:34,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:28:34,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-29 20:28:34,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:34,088 INFO L225 Difference]: With dead ends: 382 [2020-11-29 20:28:34,088 INFO L226 Difference]: Without dead ends: 316 [2020-11-29 20:28:34,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:28:34,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-11-29 20:28:34,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 132. [2020-11-29 20:28:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-11-29 20:28:34,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 181 transitions. [2020-11-29 20:28:34,131 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 181 transitions. Word has length 30 [2020-11-29 20:28:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:34,135 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 181 transitions. [2020-11-29 20:28:34,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:28:34,136 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 181 transitions. [2020-11-29 20:28:34,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 20:28:34,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:34,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:34,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:28:34,139 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:34,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:34,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1765991081, now seen corresponding path program 1 times [2020-11-29 20:28:34,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:34,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683461377] [2020-11-29 20:28:34,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:34,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683461377] [2020-11-29 20:28:34,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:34,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:28:34,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491476310] [2020-11-29 20:28:34,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:28:34,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:34,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:28:34,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:28:34,245 INFO L87 Difference]: Start difference. First operand 132 states and 181 transitions. Second operand 5 states. [2020-11-29 20:28:34,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:34,387 INFO L93 Difference]: Finished difference Result 378 states and 520 transitions. [2020-11-29 20:28:34,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:28:34,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-29 20:28:34,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:34,390 INFO L225 Difference]: With dead ends: 378 [2020-11-29 20:28:34,390 INFO L226 Difference]: Without dead ends: 376 [2020-11-29 20:28:34,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:28:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-11-29 20:28:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 132. [2020-11-29 20:28:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-11-29 20:28:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 180 transitions. [2020-11-29 20:28:34,409 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 180 transitions. Word has length 31 [2020-11-29 20:28:34,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:34,410 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 180 transitions. [2020-11-29 20:28:34,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:28:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 180 transitions. [2020-11-29 20:28:34,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 20:28:34,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:34,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:34,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:28:34,412 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:34,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:34,413 INFO L82 PathProgramCache]: Analyzing trace with hash -526561838, now seen corresponding path program 1 times [2020-11-29 20:28:34,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:34,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933065023] [2020-11-29 20:28:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:34,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933065023] [2020-11-29 20:28:34,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:34,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:28:34,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248641483] [2020-11-29 20:28:34,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:28:34,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:34,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:28:34,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:28:34,487 INFO L87 Difference]: Start difference. First operand 132 states and 180 transitions. Second operand 6 states. [2020-11-29 20:28:34,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:34,610 INFO L93 Difference]: Finished difference Result 354 states and 478 transitions. [2020-11-29 20:28:34,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:28:34,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-11-29 20:28:34,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:34,612 INFO L225 Difference]: With dead ends: 354 [2020-11-29 20:28:34,612 INFO L226 Difference]: Without dead ends: 228 [2020-11-29 20:28:34,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:28:34,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-11-29 20:28:34,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 140. [2020-11-29 20:28:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-29 20:28:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2020-11-29 20:28:34,634 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 31 [2020-11-29 20:28:34,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:34,634 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2020-11-29 20:28:34,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:28:34,634 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2020-11-29 20:28:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 20:28:34,635 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:34,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:34,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 20:28:34,636 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:34,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:34,637 INFO L82 PathProgramCache]: Analyzing trace with hash -268396400, now seen corresponding path program 1 times [2020-11-29 20:28:34,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:34,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408436751] [2020-11-29 20:28:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:34,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408436751] [2020-11-29 20:28:34,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:34,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:28:34,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312007310] [2020-11-29 20:28:34,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:28:34,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:34,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:28:34,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:28:34,681 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand 3 states. [2020-11-29 20:28:34,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:34,718 INFO L93 Difference]: Finished difference Result 324 states and 434 transitions. [2020-11-29 20:28:34,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:28:34,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-11-29 20:28:34,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:34,720 INFO L225 Difference]: With dead ends: 324 [2020-11-29 20:28:34,720 INFO L226 Difference]: Without dead ends: 190 [2020-11-29 20:28:34,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:28:34,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-11-29 20:28:34,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-11-29 20:28:34,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-11-29 20:28:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 248 transitions. [2020-11-29 20:28:34,741 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 248 transitions. Word has length 31 [2020-11-29 20:28:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:34,741 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 248 transitions. [2020-11-29 20:28:34,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:28:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 248 transitions. [2020-11-29 20:28:34,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 20:28:34,743 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:34,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:34,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 20:28:34,743 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:34,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:34,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1913811026, now seen corresponding path program 1 times [2020-11-29 20:28:34,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:34,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285174459] [2020-11-29 20:28:34,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:28:34,804 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:28:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:28:34,883 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:28:34,938 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:28:34,938 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:28:34,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 20:28:35,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:28:35 BoogieIcfgContainer [2020-11-29 20:28:35,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:28:35,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:28:35,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:28:35,088 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:28:35,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:28:32" (3/4) ... [2020-11-29 20:28:35,095 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:28:35,192 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_be0bfaa5-0651-4e30-896c-ee118ffe4f45/bin/uautomizer/witness.graphml [2020-11-29 20:28:35,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:28:35,195 INFO L168 Benchmark]: Toolchain (without parser) took 4752.15 ms. Allocated memory was 98.6 MB in the beginning and 153.1 MB in the end (delta: 54.5 MB). Free memory was 67.1 MB in the beginning and 93.6 MB in the end (delta: -26.4 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:35,195 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory was 57.3 MB in the beginning and 57.3 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:28:35,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.97 ms. Allocated memory is still 98.6 MB. Free memory was 67.1 MB in the beginning and 64.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:35,196 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.72 ms. Allocated memory is still 98.6 MB. Free memory was 64.3 MB in the beginning and 60.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:35,196 INFO L168 Benchmark]: Boogie Preprocessor took 43.09 ms. Allocated memory is still 98.6 MB. Free memory was 60.9 MB in the beginning and 58.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:35,197 INFO L168 Benchmark]: RCFGBuilder took 1151.79 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 58.0 MB in the beginning and 87.7 MB in the end (delta: -29.7 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:35,198 INFO L168 Benchmark]: TraceAbstraction took 2792.14 ms. Allocated memory was 119.5 MB in the beginning and 153.1 MB in the end (delta: 33.6 MB). Free memory was 87.0 MB in the beginning and 107.2 MB in the end (delta: -20.2 MB). Peak memory consumption was 73.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:35,198 INFO L168 Benchmark]: Witness Printer took 104.77 ms. Allocated memory is still 153.1 MB. Free memory was 106.2 MB in the beginning and 93.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:35,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory was 57.3 MB in the beginning and 57.3 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 587.97 ms. Allocated memory is still 98.6 MB. Free memory was 67.1 MB in the beginning and 64.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.72 ms. Allocated memory is still 98.6 MB. Free memory was 64.3 MB in the beginning and 60.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.09 ms. Allocated memory is still 98.6 MB. Free memory was 60.9 MB in the beginning and 58.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1151.79 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 58.0 MB in the beginning and 87.7 MB in the end (delta: -29.7 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2792.14 ms. Allocated memory was 119.5 MB in the beginning and 153.1 MB in the end (delta: 33.6 MB). Free memory was 87.0 MB in the beginning and 107.2 MB in the end (delta: -20.2 MB). Peak memory consumption was 73.0 MB. Max. memory is 16.1 GB. * Witness Printer took 104.77 ms. Allocated memory is still 153.1 MB. Free memory was 106.2 MB in the beginning and 93.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L71] int cleanupTimeShifts = 4; [L344] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L547] int pumpRunning = 0; [L548] int systemActive = 1; [L845] int waterLevel = 1; [L846] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L152] int retValue_acc ; [L153] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L835] int retValue_acc ; [L838] retValue_acc = 1 [L839] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L159] tmp = valid_product() [L161] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L745] int splverifierCounter ; [L746] int tmp ; [L747] int tmp___0 ; [L748] int tmp___1 ; [L749] int tmp___2 ; [L752] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L754] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L756] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L762] tmp = __VERIFIER_nondet_int() [L764] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L863] COND TRUE waterLevel < 2 [L864] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L772] tmp___0 = __VERIFIER_nondet_int() [L774] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L875] COND FALSE !(\read(methaneLevelCritical)) [L878] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L782] tmp___2 = __VERIFIER_nondet_int() [L784] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L554] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L561] COND TRUE \read(systemActive) [L609] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L612] COND FALSE !(\read(pumpRunning)) [L583] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L586] COND TRUE ! pumpRunning [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L925] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L928] COND FALSE !(waterLevel < 2) [L932] retValue_acc = 0 [L933] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L588] tmp = isHighWaterLevel() [L590] COND TRUE \read(tmp) [L637] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L46] int tmp ; [L47] int tmp___0 ; [L884] int retValue_acc ; [L887] retValue_acc = methaneLevelCritical [L888] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L3] __assert_fail("0", "minepump_spec1_product49.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 120 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 826 SDtfs, 1234 SDslu, 1056 SDs, 0 SdLazy, 148 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 561 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 12402 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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! Received shutdown request...