./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product41.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_bb17f2bd-d687-4240-91a5-dc67b5c0d940/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/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 08266259dc0ecf0b11540043fa73fc4406b9f127 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 01:27:09,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:27:09,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:27:09,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:27:09,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:27:09,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:27:09,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:27:09,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:27:09,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:27:09,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:27:09,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:27:09,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:27:09,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:27:09,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:27:09,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:27:09,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:27:09,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:27:09,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:27:09,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:27:09,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:27:09,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:27:09,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:27:09,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:27:09,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:27:09,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:27:09,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:27:09,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:27:09,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:27:09,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:27:09,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:27:09,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:27:09,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:27:09,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:27:09,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:27:09,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:27:09,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:27:09,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:27:09,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:27:09,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:27:09,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:27:09,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:27:09,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:27:09,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:27:09,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:27:09,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:27:09,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:27:09,700 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:27:09,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:27:09,701 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:27:09,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:27:09,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:27:09,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:27:09,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:27:09,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:27:09,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:27:09,705 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:27:09,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:27:09,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:27:09,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:27:09,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:27:09,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:27:09,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:27:09,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:27:09,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:27:09,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:27:09,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:27:09,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:27:09,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:27:09,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:27:09,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:27:09,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:27:09,710 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_bb17f2bd-d687-4240-91a5-dc67b5c0d940/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08266259dc0ecf0b11540043fa73fc4406b9f127 [2020-11-30 01:27:10,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:27:10,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:27:10,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:27:10,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:27:10,134 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:27:10,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2020-11-30 01:27:10,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/bin/uautomizer/data/31e4aa609/de088df3a5774c13a5c0b0a9ab919be2/FLAG76906ccb6 [2020-11-30 01:27:10,948 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:27:10,949 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2020-11-30 01:27:10,966 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/bin/uautomizer/data/31e4aa609/de088df3a5774c13a5c0b0a9ab919be2/FLAG76906ccb6 [2020-11-30 01:27:11,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/bin/uautomizer/data/31e4aa609/de088df3a5774c13a5c0b0a9ab919be2 [2020-11-30 01:27:11,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:27:11,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:27:11,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:27:11,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:27:11,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:27:11,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:27:11" (1/1) ... [2020-11-30 01:27:11,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5903a71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:11, skipping insertion in model container [2020-11-30 01:27:11,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:27:11" (1/1) ... [2020-11-30 01:27:11,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:27:11,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:27:11,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:27:11,746 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:27:11,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:27:11,938 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:27:11,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:11 WrapperNode [2020-11-30 01:27:11,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:27:11,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:27:11,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:27:11,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:27:11,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:11" (1/1) ... [2020-11-30 01:27:11,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:11" (1/1) ... [2020-11-30 01:27:12,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:27:12,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:27:12,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:27:12,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:27:12,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:11" (1/1) ... [2020-11-30 01:27:12,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:11" (1/1) ... [2020-11-30 01:27:12,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:11" (1/1) ... [2020-11-30 01:27:12,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:11" (1/1) ... [2020-11-30 01:27:12,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:11" (1/1) ... [2020-11-30 01:27:12,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:11" (1/1) ... [2020-11-30 01:27:12,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:11" (1/1) ... [2020-11-30 01:27:12,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:27:12,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:27:12,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:27:12,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:27:12,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/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 [2020-11-30 01:27:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:27:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:27:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:27:12,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:27:13,493 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:27:13,494 INFO L298 CfgBuilder]: Removed 120 assume(true) statements. [2020-11-30 01:27:13,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:13 BoogieIcfgContainer [2020-11-30 01:27:13,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:27:13,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:27:13,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:27:13,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:27:13,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:27:11" (1/3) ... [2020-11-30 01:27:13,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bcc479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:27:13, skipping insertion in model container [2020-11-30 01:27:13,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:11" (2/3) ... [2020-11-30 01:27:13,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bcc479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:27:13, skipping insertion in model container [2020-11-30 01:27:13,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:13" (3/3) ... [2020-11-30 01:27:13,510 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2020-11-30 01:27:13,525 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:27:13,531 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 01:27:13,546 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 01:27:13,589 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:27:13,589 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:27:13,589 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:27:13,590 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:27:13,590 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:27:13,591 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:27:13,591 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:27:13,591 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:27:13,618 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-11-30 01:27:13,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:27:13,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:13,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:13,628 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:13,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:13,636 INFO L82 PathProgramCache]: Analyzing trace with hash -742459830, now seen corresponding path program 1 times [2020-11-30 01:27:13,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:13,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502580249] [2020-11-30 01:27:13,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:14,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502580249] [2020-11-30 01:27:14,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:14,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:27:14,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096031337] [2020-11-30 01:27:14,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:27:14,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:14,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:27:14,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:27:14,088 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-11-30 01:27:14,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:14,142 INFO L93 Difference]: Finished difference Result 171 states and 254 transitions. [2020-11-30 01:27:14,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:27:14,144 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-30 01:27:14,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:14,164 INFO L225 Difference]: With dead ends: 171 [2020-11-30 01:27:14,164 INFO L226 Difference]: Without dead ends: 83 [2020-11-30 01:27:14,177 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 [2020-11-30 01:27:14,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-30 01:27:14,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-11-30 01:27:14,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-30 01:27:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2020-11-30 01:27:14,228 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2020-11-30 01:27:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:14,228 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2020-11-30 01:27:14,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:27:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2020-11-30 01:27:14,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:27:14,230 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:14,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:14,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:27:14,231 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:14,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:14,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1789216727, now seen corresponding path program 1 times [2020-11-30 01:27:14,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:14,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157339476] [2020-11-30 01:27:14,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:14,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157339476] [2020-11-30 01:27:14,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:14,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:27:14,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719414987] [2020-11-30 01:27:14,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:27:14,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:14,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:27:14,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:27:14,375 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand 3 states. [2020-11-30 01:27:14,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:14,393 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2020-11-30 01:27:14,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:27:14,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-30 01:27:14,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:14,404 INFO L225 Difference]: With dead ends: 83 [2020-11-30 01:27:14,404 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 01:27:14,405 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 [2020-11-30 01:27:14,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 01:27:14,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-30 01:27:14,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-30 01:27:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2020-11-30 01:27:14,412 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2020-11-30 01:27:14,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:14,412 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2020-11-30 01:27:14,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:27:14,413 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2020-11-30 01:27:14,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:27:14,419 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:14,419 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] [2020-11-30 01:27:14,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:27:14,421 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:14,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:14,422 INFO L82 PathProgramCache]: Analyzing trace with hash -2126819203, now seen corresponding path program 1 times [2020-11-30 01:27:14,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:14,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035558911] [2020-11-30 01:27:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:14,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035558911] [2020-11-30 01:27:14,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:14,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:27:14,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597580551] [2020-11-30 01:27:14,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:27:14,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:14,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:27:14,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:27:14,600 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand 3 states. [2020-11-30 01:27:14,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:14,620 INFO L93 Difference]: Finished difference Result 68 states and 98 transitions. [2020-11-30 01:27:14,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:27:14,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-30 01:27:14,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:14,625 INFO L225 Difference]: With dead ends: 68 [2020-11-30 01:27:14,627 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 01:27:14,628 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 [2020-11-30 01:27:14,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 01:27:14,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-30 01:27:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-30 01:27:14,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2020-11-30 01:27:14,641 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 22 [2020-11-30 01:27:14,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:14,642 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2020-11-30 01:27:14,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:27:14,642 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2020-11-30 01:27:14,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 01:27:14,643 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:14,643 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] [2020-11-30 01:27:14,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:27:14,644 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:14,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:14,645 INFO L82 PathProgramCache]: Analyzing trace with hash -306622024, now seen corresponding path program 1 times [2020-11-30 01:27:14,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:14,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348968474] [2020-11-30 01:27:14,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:14,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348968474] [2020-11-30 01:27:14,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:14,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:27:14,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479011372] [2020-11-30 01:27:14,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:27:14,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:14,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:27:14,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:27:14,811 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2020-11-30 01:27:14,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:14,872 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2020-11-30 01:27:14,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:27:14,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-30 01:27:14,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:14,874 INFO L225 Difference]: With dead ends: 89 [2020-11-30 01:27:14,874 INFO L226 Difference]: Without dead ends: 58 [2020-11-30 01:27:14,875 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 [2020-11-30 01:27:14,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-30 01:27:14,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-11-30 01:27:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-30 01:27:14,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2020-11-30 01:27:14,893 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 23 [2020-11-30 01:27:14,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:14,893 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2020-11-30 01:27:14,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:27:14,894 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2020-11-30 01:27:14,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 01:27:14,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:14,896 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] [2020-11-30 01:27:14,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:27:14,896 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:14,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:14,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1880803796, now seen corresponding path program 1 times [2020-11-30 01:27:14,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:14,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670579245] [2020-11-30 01:27:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:15,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670579245] [2020-11-30 01:27:15,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:15,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:15,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888549574] [2020-11-30 01:27:15,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:27:15,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:15,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:27:15,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:27:15,083 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand 5 states. [2020-11-30 01:27:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:15,258 INFO L93 Difference]: Finished difference Result 203 states and 292 transitions. [2020-11-30 01:27:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:27:15,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-30 01:27:15,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:15,261 INFO L225 Difference]: With dead ends: 203 [2020-11-30 01:27:15,261 INFO L226 Difference]: Without dead ends: 153 [2020-11-30 01:27:15,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:27:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-30 01:27:15,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 98. [2020-11-30 01:27:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-30 01:27:15,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 134 transitions. [2020-11-30 01:27:15,298 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 134 transitions. Word has length 29 [2020-11-30 01:27:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:15,298 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 134 transitions. [2020-11-30 01:27:15,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:27:15,299 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 134 transitions. [2020-11-30 01:27:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:27:15,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:15,306 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] [2020-11-30 01:27:15,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:27:15,306 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:15,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:15,307 INFO L82 PathProgramCache]: Analyzing trace with hash 548279918, now seen corresponding path program 1 times [2020-11-30 01:27:15,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:15,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583661300] [2020-11-30 01:27:15,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:15,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583661300] [2020-11-30 01:27:15,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:15,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:27:15,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584260382] [2020-11-30 01:27:15,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:15,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:15,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:15,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:15,430 INFO L87 Difference]: Start difference. First operand 98 states and 134 transitions. Second operand 4 states. [2020-11-30 01:27:15,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:15,667 INFO L93 Difference]: Finished difference Result 196 states and 275 transitions. [2020-11-30 01:27:15,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:27:15,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-30 01:27:15,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:15,670 INFO L225 Difference]: With dead ends: 196 [2020-11-30 01:27:15,670 INFO L226 Difference]: Without dead ends: 146 [2020-11-30 01:27:15,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:15,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-30 01:27:15,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2020-11-30 01:27:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-30 01:27:15,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 197 transitions. [2020-11-30 01:27:15,711 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 197 transitions. Word has length 30 [2020-11-30 01:27:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:15,711 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 197 transitions. [2020-11-30 01:27:15,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:15,711 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 197 transitions. [2020-11-30 01:27:15,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:27:15,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:15,713 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] [2020-11-30 01:27:15,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:27:15,713 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:15,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:15,714 INFO L82 PathProgramCache]: Analyzing trace with hash 806445356, now seen corresponding path program 1 times [2020-11-30 01:27:15,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:15,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712736950] [2020-11-30 01:27:15,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:15,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712736950] [2020-11-30 01:27:15,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:15,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:27:15,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845659551] [2020-11-30 01:27:15,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:27:15,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:15,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:27:15,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:27:15,803 INFO L87 Difference]: Start difference. First operand 143 states and 197 transitions. Second operand 4 states. [2020-11-30 01:27:15,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:15,881 INFO L93 Difference]: Finished difference Result 382 states and 537 transitions. [2020-11-30 01:27:15,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:27:15,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-30 01:27:15,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:15,892 INFO L225 Difference]: With dead ends: 382 [2020-11-30 01:27:15,892 INFO L226 Difference]: Without dead ends: 286 [2020-11-30 01:27:15,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:27:15,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-11-30 01:27:15,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 143. [2020-11-30 01:27:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-30 01:27:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 196 transitions. [2020-11-30 01:27:15,929 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 196 transitions. Word has length 30 [2020-11-30 01:27:15,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:15,932 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 196 transitions. [2020-11-30 01:27:15,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:27:15,932 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 196 transitions. [2020-11-30 01:27:15,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:27:15,938 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:15,938 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] [2020-11-30 01:27:15,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:27:15,939 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:15,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:15,940 INFO L82 PathProgramCache]: Analyzing trace with hash 413418346, now seen corresponding path program 1 times [2020-11-30 01:27:15,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:15,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138298472] [2020-11-30 01:27:15,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:16,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138298472] [2020-11-30 01:27:16,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:16,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:27:16,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138914706] [2020-11-30 01:27:16,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:27:16,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:16,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:27:16,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:27:16,065 INFO L87 Difference]: Start difference. First operand 143 states and 196 transitions. Second operand 6 states. [2020-11-30 01:27:16,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:16,213 INFO L93 Difference]: Finished difference Result 484 states and 677 transitions. [2020-11-30 01:27:16,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:27:16,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-30 01:27:16,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:16,217 INFO L225 Difference]: With dead ends: 484 [2020-11-30 01:27:16,217 INFO L226 Difference]: Without dead ends: 347 [2020-11-30 01:27:16,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:27:16,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-11-30 01:27:16,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 149. [2020-11-30 01:27:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-30 01:27:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 201 transitions. [2020-11-30 01:27:16,265 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 201 transitions. Word has length 30 [2020-11-30 01:27:16,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:16,266 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 201 transitions. [2020-11-30 01:27:16,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:27:16,266 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 201 transitions. [2020-11-30 01:27:16,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 01:27:16,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:16,267 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, 1] [2020-11-30 01:27:16,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:27:16,268 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:16,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:16,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1022834337, now seen corresponding path program 1 times [2020-11-30 01:27:16,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:16,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516236075] [2020-11-30 01:27:16,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:16,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:16,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516236075] [2020-11-30 01:27:16,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:16,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:27:16,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821879119] [2020-11-30 01:27:16,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:27:16,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:16,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:27:16,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:27:16,371 INFO L87 Difference]: Start difference. First operand 149 states and 201 transitions. Second operand 6 states. [2020-11-30 01:27:16,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:16,575 INFO L93 Difference]: Finished difference Result 773 states and 1048 transitions. [2020-11-30 01:27:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:27:16,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-11-30 01:27:16,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:16,580 INFO L225 Difference]: With dead ends: 773 [2020-11-30 01:27:16,581 INFO L226 Difference]: Without dead ends: 630 [2020-11-30 01:27:16,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:27:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-11-30 01:27:16,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 280. [2020-11-30 01:27:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-11-30 01:27:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 373 transitions. [2020-11-30 01:27:16,633 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 373 transitions. Word has length 33 [2020-11-30 01:27:16,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:16,634 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 373 transitions. [2020-11-30 01:27:16,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:27:16,635 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 373 transitions. [2020-11-30 01:27:16,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 01:27:16,638 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:16,638 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, 1] [2020-11-30 01:27:16,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 01:27:16,641 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:16,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:16,641 INFO L82 PathProgramCache]: Analyzing trace with hash 752173025, now seen corresponding path program 1 times [2020-11-30 01:27:16,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:16,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766495350] [2020-11-30 01:27:16,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:16,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766495350] [2020-11-30 01:27:16,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:16,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:27:16,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176773167] [2020-11-30 01:27:16,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:27:16,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:16,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:27:16,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:27:16,776 INFO L87 Difference]: Start difference. First operand 280 states and 373 transitions. Second operand 5 states. [2020-11-30 01:27:17,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:17,006 INFO L93 Difference]: Finished difference Result 580 states and 779 transitions. [2020-11-30 01:27:17,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:27:17,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-11-30 01:27:17,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:17,016 INFO L225 Difference]: With dead ends: 580 [2020-11-30 01:27:17,016 INFO L226 Difference]: Without dead ends: 394 [2020-11-30 01:27:17,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:27:17,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-11-30 01:27:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 274. [2020-11-30 01:27:17,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-11-30 01:27:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 361 transitions. [2020-11-30 01:27:17,051 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 361 transitions. Word has length 33 [2020-11-30 01:27:17,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:17,052 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 361 transitions. [2020-11-30 01:27:17,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:27:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 361 transitions. [2020-11-30 01:27:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-30 01:27:17,054 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:17,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:17,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 01:27:17,055 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:17,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:17,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1819696723, now seen corresponding path program 1 times [2020-11-30 01:27:17,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:17,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623473892] [2020-11-30 01:27:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 01:27:17,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623473892] [2020-11-30 01:27:17,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:17,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:27:17,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556698331] [2020-11-30 01:27:17,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:27:17,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:17,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:27:17,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:27:17,138 INFO L87 Difference]: Start difference. First operand 274 states and 361 transitions. Second operand 5 states. [2020-11-30 01:27:17,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:17,235 INFO L93 Difference]: Finished difference Result 618 states and 817 transitions. [2020-11-30 01:27:17,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:27:17,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-11-30 01:27:17,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:17,240 INFO L225 Difference]: With dead ends: 618 [2020-11-30 01:27:17,240 INFO L226 Difference]: Without dead ends: 350 [2020-11-30 01:27:17,241 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 [2020-11-30 01:27:17,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-11-30 01:27:17,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 274. [2020-11-30 01:27:17,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-11-30 01:27:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 357 transitions. [2020-11-30 01:27:17,276 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 357 transitions. Word has length 47 [2020-11-30 01:27:17,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:17,277 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 357 transitions. [2020-11-30 01:27:17,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:27:17,277 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 357 transitions. [2020-11-30 01:27:17,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-30 01:27:17,279 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:17,279 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:17,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 01:27:17,279 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:17,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:17,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1965797483, now seen corresponding path program 1 times [2020-11-30 01:27:17,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:17,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990712395] [2020-11-30 01:27:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 01:27:17,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990712395] [2020-11-30 01:27:17,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:17,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:27:17,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768237223] [2020-11-30 01:27:17,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:27:17,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:17,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:27:17,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:27:17,373 INFO L87 Difference]: Start difference. First operand 274 states and 357 transitions. Second operand 5 states. [2020-11-30 01:27:17,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:17,457 INFO L93 Difference]: Finished difference Result 532 states and 697 transitions. [2020-11-30 01:27:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:27:17,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-11-30 01:27:17,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:17,460 INFO L225 Difference]: With dead ends: 532 [2020-11-30 01:27:17,460 INFO L226 Difference]: Without dead ends: 264 [2020-11-30 01:27:17,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:27:17,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-11-30 01:27:17,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 220. [2020-11-30 01:27:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-11-30 01:27:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 286 transitions. [2020-11-30 01:27:17,492 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 286 transitions. Word has length 47 [2020-11-30 01:27:17,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:17,493 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 286 transitions. [2020-11-30 01:27:17,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:27:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 286 transitions. [2020-11-30 01:27:17,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-30 01:27:17,494 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:17,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:17,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 01:27:17,495 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:17,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:17,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2134697109, now seen corresponding path program 1 times [2020-11-30 01:27:17,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:17,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787699167] [2020-11-30 01:27:17,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:17,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787699167] [2020-11-30 01:27:17,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021993422] [2020-11-30 01:27:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:27:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:17,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:27:17,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:27:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:17,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:27:17,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-30 01:27:17,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588254590] [2020-11-30 01:27:17,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:27:17,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:17,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:27:17,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:27:17,981 INFO L87 Difference]: Start difference. First operand 220 states and 286 transitions. Second operand 6 states. [2020-11-30 01:27:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:18,478 INFO L93 Difference]: Finished difference Result 635 states and 843 transitions. [2020-11-30 01:27:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:27:18,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-11-30 01:27:18,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:18,483 INFO L225 Difference]: With dead ends: 635 [2020-11-30 01:27:18,483 INFO L226 Difference]: Without dead ends: 467 [2020-11-30 01:27:18,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:27:18,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-11-30 01:27:18,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 302. [2020-11-30 01:27:18,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-11-30 01:27:18,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 396 transitions. [2020-11-30 01:27:18,538 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 396 transitions. Word has length 48 [2020-11-30 01:27:18,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:18,539 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 396 transitions. [2020-11-30 01:27:18,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:27:18,539 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 396 transitions. [2020-11-30 01:27:18,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-30 01:27:18,540 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:18,541 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:18,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-30 01:27:18,770 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:18,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:18,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1767540063, now seen corresponding path program 2 times [2020-11-30 01:27:18,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:18,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380389539] [2020-11-30 01:27:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:27:18,878 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:27:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:27:18,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:27:19,069 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:27:19,070 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:27:19,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 01:27:19,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:27:19 BoogieIcfgContainer [2020-11-30 01:27:19,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:27:19,295 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:27:19,295 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:27:19,296 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:27:19,296 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:13" (3/4) ... [2020-11-30 01:27:19,299 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:27:19,456 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bb17f2bd-d687-4240-91a5-dc67b5c0d940/bin/uautomizer/witness.graphml [2020-11-30 01:27:19,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:27:19,458 INFO L168 Benchmark]: Toolchain (without parser) took 8226.81 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 70.0 MB in the beginning and 62.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 51.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:19,459 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 98.6 MB. Free memory is still 55.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:27:19,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.43 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 64.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:19,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.56 ms. Allocated memory is still 98.6 MB. Free memory was 64.6 MB in the beginning and 61.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:19,461 INFO L168 Benchmark]: Boogie Preprocessor took 87.28 ms. Allocated memory is still 98.6 MB. Free memory was 61.3 MB in the beginning and 59.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:19,461 INFO L168 Benchmark]: RCFGBuilder took 1349.28 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 59.2 MB in the beginning and 92.4 MB in the end (delta: -33.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:19,462 INFO L168 Benchmark]: TraceAbstraction took 5796.58 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 92.4 MB in the beginning and 87.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 83.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:19,462 INFO L168 Benchmark]: Witness Printer took 160.54 ms. Allocated memory is still 144.7 MB. Free memory was 87.0 MB in the beginning and 62.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:19,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 98.6 MB. Free memory is still 55.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 698.43 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 64.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 115.56 ms. Allocated memory is still 98.6 MB. Free memory was 64.6 MB in the beginning and 61.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.28 ms. Allocated memory is still 98.6 MB. Free memory was 61.3 MB in the beginning and 59.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1349.28 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 59.2 MB in the beginning and 92.4 MB in the end (delta: -33.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5796.58 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 92.4 MB in the beginning and 87.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 83.0 MB. Max. memory is 16.1 GB. * Witness Printer took 160.54 ms. Allocated memory is still 144.7 MB. Free memory was 87.0 MB in the beginning and 62.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L387] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L654] int pumpRunning = 0; [L655] int systemActive = 1; [L824] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L897] int retValue_acc ; [L898] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L200] int retValue_acc ; [L203] retValue_acc = 1 [L204] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L587] int splverifierCounter ; [L588] int tmp ; [L589] int tmp___0 ; [L590] int tmp___1 ; [L591] int tmp___2 ; [L594] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L596] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L598] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L604] tmp = __VERIFIER_nondet_int() [L606] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L614] tmp___0 = __VERIFIER_nondet_int() [L616] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L624] tmp___2 = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L661] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L668] COND TRUE \read(systemActive) [L690] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L693] COND TRUE ! pumpRunning [L805] int retValue_acc ; [L806] int tmp ; [L807] int tmp___0 ; [L129] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L811] tmp = isHighWaterSensorDry() [L813] COND FALSE !(\read(tmp)) [L816] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L818] retValue_acc = tmp___0 [L819] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L695] tmp = isHighWaterLevel() [L697] COND TRUE \read(tmp) [L724] int tmp ; [L749] int retValue_acc ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L753] retValue_acc = isMethaneLevelCritical() [L755] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L728] tmp = isMethaneAlarm() [L730] COND FALSE !(\read(tmp)) [L718] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L146] int tmp ; [L147] int tmp___0 ; [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L151] tmp = getWaterLevel() [L153] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L596] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L598] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L604] tmp = __VERIFIER_nondet_int() [L606] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L614] tmp___0 = __VERIFIER_nondet_int() [L616] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L624] tmp___2 = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L661] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L668] COND TRUE \read(systemActive) [L690] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L693] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L146] int tmp ; [L147] int tmp___0 ; [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L151] tmp = getWaterLevel() [L153] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L596] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L598] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L604] tmp = __VERIFIER_nondet_int() [L606] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L614] tmp___0 = __VERIFIER_nondet_int() [L616] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L624] tmp___2 = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L661] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L668] COND TRUE \read(systemActive) [L690] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L693] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L146] int tmp ; [L147] int tmp___0 ; [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L151] tmp = getWaterLevel() [L153] COND TRUE tmp == 0 [L760] int retValue_acc ; [L763] retValue_acc = pumpRunning [L764] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L155] tmp___0 = isPumpRunning() [L157] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product41.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 90 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.4s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1063 SDtfs, 1392 SDslu, 1649 SDs, 0 SdLazy, 238 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=302occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 1156 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 516 NumberOfCodeBlocks, 516 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 439 ConstructedInterpolants, 0 QuantifiedInterpolants, 29746 SizeOfPredicates, 4 NumberOfNonLiveVariables, 413 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 50/56 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...