./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 46490a57ce91137af910512252196515ce511def .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-5485861 [2020-10-25 23:04:46,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 23:04:46,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 23:04:46,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 23:04:46,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 23:04:46,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 23:04:46,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 23:04:46,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 23:04:46,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 23:04:46,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 23:04:46,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 23:04:46,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 23:04:46,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 23:04:46,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 23:04:46,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 23:04:46,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 23:04:46,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 23:04:46,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 23:04:46,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 23:04:46,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 23:04:46,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 23:04:46,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 23:04:46,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 23:04:46,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 23:04:46,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 23:04:46,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 23:04:46,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 23:04:46,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 23:04:46,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 23:04:46,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 23:04:46,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 23:04:46,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 23:04:46,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 23:04:46,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 23:04:46,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 23:04:46,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 23:04:46,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 23:04:46,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 23:04:46,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 23:04:46,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 23:04:46,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 23:04:46,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 23:04:46,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 23:04:46,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 23:04:46,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 23:04:46,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 23:04:46,290 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 23:04:46,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 23:04:46,291 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 23:04:46,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 23:04:46,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 23:04:46,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 23:04:46,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 23:04:46,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 23:04:46,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 23:04:46,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 23:04:46,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 23:04:46,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 23:04:46,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 23:04:46,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 23:04:46,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 23:04:46,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 23:04:46,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 23:04:46,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 23:04:46,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 23:04:46,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 23:04:46,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 23:04:46,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 23:04:46,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 23:04:46,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 23:04:46,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 23:04:46,300 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46490a57ce91137af910512252196515ce511def [2020-10-25 23:04:46,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 23:04:46,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 23:04:46,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 23:04:46,835 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 23:04:46,840 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 23:04:46,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2020-10-25 23:04:46,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664b71db7/5faa57efe793425db33f37aa7a02ed4d/FLAGaf33f7fa9 [2020-10-25 23:04:47,720 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 23:04:47,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2020-10-25 23:04:47,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664b71db7/5faa57efe793425db33f37aa7a02ed4d/FLAGaf33f7fa9 [2020-10-25 23:04:47,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664b71db7/5faa57efe793425db33f37aa7a02ed4d [2020-10-25 23:04:47,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 23:04:47,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 23:04:47,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 23:04:47,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 23:04:47,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 23:04:47,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:04:47" (1/1) ... [2020-10-25 23:04:47,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e906a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:04:47, skipping insertion in model container [2020-10-25 23:04:47,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:04:47" (1/1) ... [2020-10-25 23:04:48,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 23:04:48,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 23:04:48,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:04:48,435 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 23:04:48,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:04:48,623 INFO L208 MainTranslator]: Completed translation [2020-10-25 23:04:48,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:04:48 WrapperNode [2020-10-25 23:04:48,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 23:04:48,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 23:04:48,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 23:04:48,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 23:04:48,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:04:48" (1/1) ... [2020-10-25 23:04:48,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:04:48" (1/1) ... [2020-10-25 23:04:48,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 23:04:48,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 23:04:48,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 23:04:48,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 23:04:48,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:04:48" (1/1) ... [2020-10-25 23:04:48,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:04:48" (1/1) ... [2020-10-25 23:04:48,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:04:48" (1/1) ... [2020-10-25 23:04:48,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:04:48" (1/1) ... [2020-10-25 23:04:48,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:04:48" (1/1) ... [2020-10-25 23:04:48,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:04:48" (1/1) ... [2020-10-25 23:04:48,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:04:48" (1/1) ... [2020-10-25 23:04:48,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 23:04:48,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 23:04:48,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 23:04:48,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 23:04:48,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:04:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 23:04:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 23:04:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 23:04:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 23:04:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 23:04:50,171 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 23:04:50,171 INFO L298 CfgBuilder]: Removed 164 assume(true) statements. [2020-10-25 23:04:50,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:04:50 BoogieIcfgContainer [2020-10-25 23:04:50,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 23:04:50,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 23:04:50,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 23:04:50,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 23:04:50,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 11:04:47" (1/3) ... [2020-10-25 23:04:50,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687b8605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:04:50, skipping insertion in model container [2020-10-25 23:04:50,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:04:48" (2/3) ... [2020-10-25 23:04:50,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687b8605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:04:50, skipping insertion in model container [2020-10-25 23:04:50,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:04:50" (3/3) ... [2020-10-25 23:04:50,183 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2020-10-25 23:04:50,195 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 23:04:50,201 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-25 23:04:50,214 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-25 23:04:50,242 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 23:04:50,242 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 23:04:50,242 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 23:04:50,243 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 23:04:50,243 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 23:04:50,243 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 23:04:50,243 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 23:04:50,243 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 23:04:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states. [2020-10-25 23:04:50,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 23:04:50,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:04:50,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:04:50,270 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:04:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:04:50,277 INFO L82 PathProgramCache]: Analyzing trace with hash -96008729, now seen corresponding path program 1 times [2020-10-25 23:04:50,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:04:50,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43700843] [2020-10-25 23:04:50,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:04:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:04:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:04:50,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43700843] [2020-10-25 23:04:50,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:04:50,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:04:50,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023999490] [2020-10-25 23:04:50,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 23:04:50,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:04:50,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 23:04:50,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 23:04:50,629 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 2 states. [2020-10-25 23:04:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:04:50,666 INFO L93 Difference]: Finished difference Result 231 states and 350 transitions. [2020-10-25 23:04:50,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 23:04:50,668 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-25 23:04:50,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:04:50,681 INFO L225 Difference]: With dead ends: 231 [2020-10-25 23:04:50,682 INFO L226 Difference]: Without dead ends: 113 [2020-10-25 23:04:50,686 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 [2020-10-25 23:04:50,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-25 23:04:50,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-25 23:04:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-25 23:04:50,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2020-10-25 23:04:50,739 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 16 [2020-10-25 23:04:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:04:50,740 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2020-10-25 23:04:50,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 23:04:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2020-10-25 23:04:50,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 23:04:50,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:04:50,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:04:50,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 23:04:50,743 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:04:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:04:50,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1142765626, now seen corresponding path program 1 times [2020-10-25 23:04:50,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:04:50,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578283181] [2020-10-25 23:04:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:04:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:04:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:04:50,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578283181] [2020-10-25 23:04:50,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:04:50,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 23:04:50,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798918785] [2020-10-25 23:04:50,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:04:50,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:04:50,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:04:50,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:04:50,902 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand 3 states. [2020-10-25 23:04:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:04:50,939 INFO L93 Difference]: Finished difference Result 113 states and 165 transitions. [2020-10-25 23:04:50,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:04:50,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 23:04:50,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:04:50,942 INFO L225 Difference]: With dead ends: 113 [2020-10-25 23:04:50,944 INFO L226 Difference]: Without dead ends: 47 [2020-10-25 23:04:50,946 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 [2020-10-25 23:04:50,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-25 23:04:50,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-25 23:04:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-25 23:04:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-10-25 23:04:50,958 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-10-25 23:04:50,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:04:50,958 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-10-25 23:04:50,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:04:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-10-25 23:04:50,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 23:04:50,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:04:50,963 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] [2020-10-25 23:04:50,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 23:04:50,964 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:04:50,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:04:50,967 INFO L82 PathProgramCache]: Analyzing trace with hash -230586389, now seen corresponding path program 1 times [2020-10-25 23:04:50,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:04:50,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101854304] [2020-10-25 23:04:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:04:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:04:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:04:51,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101854304] [2020-10-25 23:04:51,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:04:51,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:04:51,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585125001] [2020-10-25 23:04:51,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:04:51,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:04:51,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:04:51,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:04:51,158 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 5 states. [2020-10-25 23:04:51,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:04:51,217 INFO L93 Difference]: Finished difference Result 88 states and 130 transitions. [2020-10-25 23:04:51,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 23:04:51,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-25 23:04:51,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:04:51,219 INFO L225 Difference]: With dead ends: 88 [2020-10-25 23:04:51,219 INFO L226 Difference]: Without dead ends: 47 [2020-10-25 23:04:51,220 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 [2020-10-25 23:04:51,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-25 23:04:51,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-25 23:04:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-25 23:04:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2020-10-25 23:04:51,228 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 22 [2020-10-25 23:04:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:04:51,229 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2020-10-25 23:04:51,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:04:51,229 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2020-10-25 23:04:51,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 23:04:51,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:04:51,230 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] [2020-10-25 23:04:51,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 23:04:51,231 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:04:51,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:04:51,232 INFO L82 PathProgramCache]: Analyzing trace with hash -108421843, now seen corresponding path program 1 times [2020-10-25 23:04:51,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:04:51,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783673870] [2020-10-25 23:04:51,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:04:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:04:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:04:51,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783673870] [2020-10-25 23:04:51,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:04:51,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:04:51,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871759154] [2020-10-25 23:04:51,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:04:51,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:04:51,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:04:51,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:04:51,323 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand 3 states. [2020-10-25 23:04:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:04:51,409 INFO L93 Difference]: Finished difference Result 109 states and 158 transitions. [2020-10-25 23:04:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:04:51,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-25 23:04:51,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:04:51,412 INFO L225 Difference]: With dead ends: 109 [2020-10-25 23:04:51,412 INFO L226 Difference]: Without dead ends: 68 [2020-10-25 23:04:51,413 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 [2020-10-25 23:04:51,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-25 23:04:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-25 23:04:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-25 23:04:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2020-10-25 23:04:51,439 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 24 [2020-10-25 23:04:51,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:04:51,440 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2020-10-25 23:04:51,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:04:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2020-10-25 23:04:51,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-25 23:04:51,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:04:51,444 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] [2020-10-25 23:04:51,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 23:04:51,444 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:04:51,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:04:51,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1619186466, now seen corresponding path program 1 times [2020-10-25 23:04:51,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:04:51,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652277926] [2020-10-25 23:04:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:04:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:04:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:04:51,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652277926] [2020-10-25 23:04:51,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:04:51,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:04:51,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552233398] [2020-10-25 23:04:51,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:04:51,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:04:51,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:04:51,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:04:51,578 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand 5 states. [2020-10-25 23:04:51,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:04:51,716 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2020-10-25 23:04:51,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:04:51,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-25 23:04:51,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:04:51,719 INFO L225 Difference]: With dead ends: 175 [2020-10-25 23:04:51,719 INFO L226 Difference]: Without dead ends: 115 [2020-10-25 23:04:51,720 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 [2020-10-25 23:04:51,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-25 23:04:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 72. [2020-10-25 23:04:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-25 23:04:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2020-10-25 23:04:51,733 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 30 [2020-10-25 23:04:51,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:04:51,733 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2020-10-25 23:04:51,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:04:51,734 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2020-10-25 23:04:51,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-25 23:04:51,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:04:51,735 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] [2020-10-25 23:04:51,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 23:04:51,736 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:04:51,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:04:51,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1043324577, now seen corresponding path program 1 times [2020-10-25 23:04:51,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:04:51,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70712039] [2020-10-25 23:04:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:04:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:04:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:04:51,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70712039] [2020-10-25 23:04:51,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:04:51,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 23:04:51,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597754446] [2020-10-25 23:04:51,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:04:51,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:04:51,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:04:51,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:04:51,810 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand 5 states. [2020-10-25 23:04:51,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:04:51,919 INFO L93 Difference]: Finished difference Result 382 states and 538 transitions. [2020-10-25 23:04:51,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-25 23:04:51,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-25 23:04:51,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:04:51,923 INFO L225 Difference]: With dead ends: 382 [2020-10-25 23:04:51,923 INFO L226 Difference]: Without dead ends: 316 [2020-10-25 23:04:51,924 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 [2020-10-25 23:04:51,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-25 23:04:51,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 132. [2020-10-25 23:04:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-25 23:04:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 181 transitions. [2020-10-25 23:04:51,948 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 181 transitions. Word has length 30 [2020-10-25 23:04:51,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:04:51,948 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 181 transitions. [2020-10-25 23:04:51,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:04:51,949 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 181 transitions. [2020-10-25 23:04:51,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 23:04:51,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:04:51,950 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] [2020-10-25 23:04:51,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 23:04:51,951 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:04:51,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:04:51,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1715093079, now seen corresponding path program 1 times [2020-10-25 23:04:51,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:04:51,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536424208] [2020-10-25 23:04:51,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:04:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:04:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:04:52,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536424208] [2020-10-25 23:04:52,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:04:52,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 23:04:52,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337955328] [2020-10-25 23:04:52,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:04:52,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:04:52,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:04:52,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:04:52,028 INFO L87 Difference]: Start difference. First operand 132 states and 181 transitions. Second operand 5 states. [2020-10-25 23:04:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:04:52,197 INFO L93 Difference]: Finished difference Result 378 states and 520 transitions. [2020-10-25 23:04:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 23:04:52,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-25 23:04:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:04:52,201 INFO L225 Difference]: With dead ends: 378 [2020-10-25 23:04:52,202 INFO L226 Difference]: Without dead ends: 376 [2020-10-25 23:04:52,203 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 [2020-10-25 23:04:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-25 23:04:52,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 132. [2020-10-25 23:04:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-25 23:04:52,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 180 transitions. [2020-10-25 23:04:52,226 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 180 transitions. Word has length 31 [2020-10-25 23:04:52,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:04:52,227 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 180 transitions. [2020-10-25 23:04:52,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:04:52,227 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 180 transitions. [2020-10-25 23:04:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 23:04:52,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:04:52,229 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] [2020-10-25 23:04:52,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 23:04:52,230 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:04:52,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:04:52,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1340444974, now seen corresponding path program 1 times [2020-10-25 23:04:52,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:04:52,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702402381] [2020-10-25 23:04:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:04:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:04:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:04:52,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702402381] [2020-10-25 23:04:52,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:04:52,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-25 23:04:52,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031311895] [2020-10-25 23:04:52,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 23:04:52,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:04:52,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 23:04:52,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 23:04:52,315 INFO L87 Difference]: Start difference. First operand 132 states and 180 transitions. Second operand 6 states. [2020-10-25 23:04:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:04:52,435 INFO L93 Difference]: Finished difference Result 354 states and 478 transitions. [2020-10-25 23:04:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 23:04:52,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-25 23:04:52,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:04:52,438 INFO L225 Difference]: With dead ends: 354 [2020-10-25 23:04:52,438 INFO L226 Difference]: Without dead ends: 228 [2020-10-25 23:04:52,439 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 [2020-10-25 23:04:52,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-25 23:04:52,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 140. [2020-10-25 23:04:52,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-25 23:04:52,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2020-10-25 23:04:52,463 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 31 [2020-10-25 23:04:52,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:04:52,463 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2020-10-25 23:04:52,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 23:04:52,464 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2020-10-25 23:04:52,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 23:04:52,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:04:52,466 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] [2020-10-25 23:04:52,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-25 23:04:52,466 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:04:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:04:52,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1082279536, now seen corresponding path program 1 times [2020-10-25 23:04:52,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:04:52,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362446358] [2020-10-25 23:04:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:04:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:04:52,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:04:52,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362446358] [2020-10-25 23:04:52,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:04:52,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:04:52,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561066862] [2020-10-25 23:04:52,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:04:52,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:04:52,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:04:52,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:04:52,542 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand 3 states. [2020-10-25 23:04:52,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:04:52,592 INFO L93 Difference]: Finished difference Result 324 states and 434 transitions. [2020-10-25 23:04:52,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:04:52,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-25 23:04:52,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:04:52,595 INFO L225 Difference]: With dead ends: 324 [2020-10-25 23:04:52,595 INFO L226 Difference]: Without dead ends: 190 [2020-10-25 23:04:52,596 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 [2020-10-25 23:04:52,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-25 23:04:52,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-10-25 23:04:52,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-25 23:04:52,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 248 transitions. [2020-10-25 23:04:52,623 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 248 transitions. Word has length 31 [2020-10-25 23:04:52,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:04:52,623 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 248 transitions. [2020-10-25 23:04:52,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:04:52,624 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 248 transitions. [2020-10-25 23:04:52,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-25 23:04:52,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:04:52,626 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] [2020-10-25 23:04:52,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-25 23:04:52,626 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:04:52,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:04:52,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1099927890, now seen corresponding path program 1 times [2020-10-25 23:04:52,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:04:52,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298128110] [2020-10-25 23:04:52,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:04:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:04:52,699 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:04:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:04:52,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:04:52,818 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 23:04:52,818 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 23:04:52,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-25 23:04:52,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 11:04:52 BoogieIcfgContainer [2020-10-25 23:04:52,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 23:04:52,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 23:04:52,988 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 23:04:52,988 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 23:04:52,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:04:50" (3/4) ... [2020-10-25 23:04:52,995 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 23:04:53,127 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 23:04:53,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 23:04:53,133 INFO L168 Benchmark]: Toolchain (without parser) took 5155.08 ms. Allocated memory was 48.2 MB in the beginning and 92.3 MB in the end (delta: 44.0 MB). Free memory was 31.5 MB in the beginning and 45.9 MB in the end (delta: -14.4 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2020-10-25 23:04:53,134 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 37.7 MB. Free memory was 20.3 MB in the beginning and 20.3 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:04:53,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.59 ms. Allocated memory is still 48.2 MB. Free memory was 30.8 MB in the beginning and 21.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-10-25 23:04:53,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 170.36 ms. Allocated memory is still 48.2 MB. Free memory was 21.2 MB in the beginning and 29.3 MB in the end (delta: -8.1 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-10-25 23:04:53,138 INFO L168 Benchmark]: Boogie Preprocessor took 97.83 ms. Allocated memory is still 48.2 MB. Free memory was 29.3 MB in the beginning and 26.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:04:53,138 INFO L168 Benchmark]: RCFGBuilder took 1277.15 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 26.6 MB in the beginning and 35.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2020-10-25 23:04:53,139 INFO L168 Benchmark]: TraceAbstraction took 2811.50 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 35.1 MB in the beginning and 59.5 MB in the end (delta: -24.4 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. [2020-10-25 23:04:53,140 INFO L168 Benchmark]: Witness Printer took 140.26 ms. Allocated memory is still 92.3 MB. Free memory was 59.5 MB in the beginning and 45.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-25 23:04:53,146 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 37.7 MB. Free memory was 20.3 MB in the beginning and 20.3 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 641.59 ms. Allocated memory is still 48.2 MB. Free memory was 30.8 MB in the beginning and 21.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 170.36 ms. Allocated memory is still 48.2 MB. Free memory was 21.2 MB in the beginning and 29.3 MB in the end (delta: -8.1 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.83 ms. Allocated memory is still 48.2 MB. Free memory was 29.3 MB in the beginning and 26.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1277.15 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 26.6 MB in the beginning and 35.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2811.50 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 35.1 MB in the beginning and 59.5 MB in the end (delta: -24.4 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. * Witness Printer took 140.26 ms. Allocated memory is still 92.3 MB. Free memory was 59.5 MB in the beginning and 45.9 MB in the end (delta: 13.6 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: [L78] int waterLevel = 1; [L79] int methaneLevelCritical = 0; [L181] int cleanupTimeShifts = 4; [L397] int pumpRunning = 0; [L398] int systemActive = 1; [L771] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L260] int retValue_acc ; [L261] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L309] int retValue_acc ; [L312] retValue_acc = 1 [L313] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L267] tmp = valid_product() [L269] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L320] int splverifierCounter ; [L321] int tmp ; [L322] int tmp___0 ; [L323] int tmp___1 ; [L324] int tmp___2 ; [L327] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L329] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L331] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L337] tmp = __VERIFIER_nondet_int() [L339] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L96] COND TRUE waterLevel < 2 [L97] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L347] tmp___0 = __VERIFIER_nondet_int() [L349] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L108] COND FALSE !(\read(methaneLevelCritical)) [L111] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L357] tmp___2 = __VERIFIER_nondet_int() [L359] COND TRUE \read(tmp___2) [L597] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L404] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L411] COND TRUE \read(systemActive) [L459] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L462] COND FALSE !(\read(pumpRunning)) [L433] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L436] COND TRUE ! pumpRunning [L556] int retValue_acc ; [L557] int tmp ; [L558] int tmp___0 ; [L158] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L161] COND FALSE !(waterLevel < 2) [L165] retValue_acc = 0 [L166] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L562] tmp = isHighWaterSensorDry() [L564] COND FALSE !(\read(tmp)) [L567] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L569] retValue_acc = tmp___0 [L570] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L438] tmp = isHighWaterLevel() [L440] COND TRUE \read(tmp) [L487] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L46] int tmp ; [L47] int tmp___0 ; [L117] int retValue_acc ; [L120] retValue_acc = methaneLevelCritical [L121] 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) [L511] int retValue_acc ; [L514] retValue_acc = pumpRunning [L515] 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_product50.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: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 826 SDtfs, 1232 SDslu, 1058 SDs, 0 SdLazy, 146 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s 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, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 11751 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...