./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.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_e737b740-e15b-4966-9e92-d58c7180efca/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/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 9380fcd5e8279275d54611c820c997d6cd3c87ac ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:35:49,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:35:49,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:35:49,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:35:49,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:35:49,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:35:49,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:35:49,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:35:49,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:35:49,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:35:49,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:35:49,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:35:49,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:35:49,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:35:49,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:35:49,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:35:49,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:35:49,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:35:49,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:35:49,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:35:49,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:35:49,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:35:49,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:35:49,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:35:49,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:35:49,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:35:49,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:35:49,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:35:49,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:35:49,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:35:49,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:35:49,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:35:49,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:35:49,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:35:49,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:35:49,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:35:49,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:35:49,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:35:49,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:35:49,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:35:49,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:35:49,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:35:49,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:35:49,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:35:49,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:35:49,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:35:49,863 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:35:49,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:35:49,864 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:35:49,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:35:49,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:35:49,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:35:49,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:35:49,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:35:49,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:35:49,867 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:35:49,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:35:49,868 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:35:49,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:35:49,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:35:49,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:35:49,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:35:49,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:35:49,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:35:49,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:35:49,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:35:49,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:35:49,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:35:49,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:35:49,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:35:49,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:35:49,872 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_e737b740-e15b-4966-9e92-d58c7180efca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9380fcd5e8279275d54611c820c997d6cd3c87ac [2020-11-29 20:35:50,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:35:50,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:35:50,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:35:50,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:35:50,302 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:35:50,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2020-11-29 20:35:50,399 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/bin/uautomizer/data/24fb71a2e/0568bd508a3d4ca4b1ceba62099f8d07/FLAG5bcd2046d [2020-11-29 20:35:50,963 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:35:50,964 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2020-11-29 20:35:50,974 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/bin/uautomizer/data/24fb71a2e/0568bd508a3d4ca4b1ceba62099f8d07/FLAG5bcd2046d [2020-11-29 20:35:51,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/bin/uautomizer/data/24fb71a2e/0568bd508a3d4ca4b1ceba62099f8d07 [2020-11-29 20:35:51,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:35:51,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:35:51,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:35:51,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:35:51,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:35:51,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:35:51" (1/1) ... [2020-11-29 20:35:51,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a61500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:35:51, skipping insertion in model container [2020-11-29 20:35:51,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:35:51" (1/1) ... [2020-11-29 20:35:51,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:35:51,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:35:51,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:35:51,680 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:35:51,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:35:51,821 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:35:51,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:35:51 WrapperNode [2020-11-29 20:35:51,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:35:51,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:35:51,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:35:51,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:35:51,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:35:51" (1/1) ... [2020-11-29 20:35:51,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:35:51" (1/1) ... [2020-11-29 20:35:51,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:35:51,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:35:51,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:35:51,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:35:51,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:35:51" (1/1) ... [2020-11-29 20:35:51,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:35:51" (1/1) ... [2020-11-29 20:35:51,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:35:51" (1/1) ... [2020-11-29 20:35:51,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:35:51" (1/1) ... [2020-11-29 20:35:51,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:35:51" (1/1) ... [2020-11-29 20:35:52,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:35:51" (1/1) ... [2020-11-29 20:35:52,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:35:51" (1/1) ... [2020-11-29 20:35:52,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:35:52,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:35:52,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:35:52,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:35:52,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:35:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:35:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:35:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:35:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:35:52,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:35:53,279 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:35:53,280 INFO L298 CfgBuilder]: Removed 198 assume(true) statements. [2020-11-29 20:35:53,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:35:53 BoogieIcfgContainer [2020-11-29 20:35:53,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:35:53,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:35:53,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:35:53,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:35:53,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:35:51" (1/3) ... [2020-11-29 20:35:53,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20111c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:35:53, skipping insertion in model container [2020-11-29 20:35:53,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:35:51" (2/3) ... [2020-11-29 20:35:53,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20111c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:35:53, skipping insertion in model container [2020-11-29 20:35:53,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:35:53" (3/3) ... [2020-11-29 20:35:53,292 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2020-11-29 20:35:53,304 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:35:53,309 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 20:35:53,322 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 20:35:53,363 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:35:53,363 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:35:53,363 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:35:53,363 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:35:53,363 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:35:53,363 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:35:53,363 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:35:53,364 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:35:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-11-29 20:35:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:35:53,403 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:53,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:35:53,404 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:53,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:53,410 INFO L82 PathProgramCache]: Analyzing trace with hash -175303324, now seen corresponding path program 1 times [2020-11-29 20:35:53,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:53,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861398872] [2020-11-29 20:35:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:35:53,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861398872] [2020-11-29 20:35:53,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:35:53,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:35:53,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957539748] [2020-11-29 20:35:53,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:35:53,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:53,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:35:53,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:35:53,714 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 2 states. [2020-11-29 20:35:53,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:53,782 INFO L93 Difference]: Finished difference Result 255 states and 380 transitions. [2020-11-29 20:35:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:35:53,784 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-29 20:35:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:53,816 INFO L225 Difference]: With dead ends: 255 [2020-11-29 20:35:53,822 INFO L226 Difference]: Without dead ends: 125 [2020-11-29 20:35:53,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:35:53,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-29 20:35:53,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-11-29 20:35:53,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-29 20:35:53,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2020-11-29 20:35:53,876 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 16 [2020-11-29 20:35:53,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:53,877 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2020-11-29 20:35:53,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:35:53,877 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2020-11-29 20:35:53,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 20:35:53,878 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:53,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:35:53,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:35:53,879 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:53,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:53,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1222060221, now seen corresponding path program 1 times [2020-11-29 20:35:53,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:53,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056503632] [2020-11-29 20:35:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:35:54,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056503632] [2020-11-29 20:35:54,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:35:54,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:35:54,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192643721] [2020-11-29 20:35:54,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:35:54,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:54,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:35:54,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:35:54,079 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. Second operand 3 states. [2020-11-29 20:35:54,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:54,091 INFO L93 Difference]: Finished difference Result 125 states and 180 transitions. [2020-11-29 20:35:54,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:35:54,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-29 20:35:54,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:54,094 INFO L225 Difference]: With dead ends: 125 [2020-11-29 20:35:54,094 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 20:35:54,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:35:54,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 20:35:54,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-29 20:35:54,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-29 20:35:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2020-11-29 20:35:54,103 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 17 [2020-11-29 20:35:54,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:54,104 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2020-11-29 20:35:54,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:35:54,104 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2020-11-29 20:35:54,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:35:54,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:54,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:35:54,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:35:54,106 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:54,107 INFO L82 PathProgramCache]: Analyzing trace with hash -2019078694, now seen corresponding path program 1 times [2020-11-29 20:35:54,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:54,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436379672] [2020-11-29 20:35:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:54,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:35:54,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436379672] [2020-11-29 20:35:54,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:35:54,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:35:54,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270545900] [2020-11-29 20:35:54,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:35:54,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:54,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:35:54,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:35:54,249 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand 3 states. [2020-11-29 20:35:54,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:54,267 INFO L93 Difference]: Finished difference Result 96 states and 140 transitions. [2020-11-29 20:35:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:35:54,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-29 20:35:54,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:54,270 INFO L225 Difference]: With dead ends: 96 [2020-11-29 20:35:54,272 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 20:35:54,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:35:54,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 20:35:54,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-29 20:35:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-29 20:35:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2020-11-29 20:35:54,279 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 22 [2020-11-29 20:35:54,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:54,279 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2020-11-29 20:35:54,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:35:54,280 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2020-11-29 20:35:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 20:35:54,281 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:54,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:35:54,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:35:54,281 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:54,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:54,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1511639432, now seen corresponding path program 1 times [2020-11-29 20:35:54,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:54,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249163136] [2020-11-29 20:35:54,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:35:54,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249163136] [2020-11-29 20:35:54,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:35:54,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:35:54,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44785495] [2020-11-29 20:35:54,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:35:54,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:54,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:35:54,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:35:54,368 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand 3 states. [2020-11-29 20:35:54,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:54,432 INFO L93 Difference]: Finished difference Result 117 states and 168 transitions. [2020-11-29 20:35:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:35:54,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-29 20:35:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:54,434 INFO L225 Difference]: With dead ends: 117 [2020-11-29 20:35:54,434 INFO L226 Difference]: Without dead ends: 72 [2020-11-29 20:35:54,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:35:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-29 20:35:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-11-29 20:35:54,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-29 20:35:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2020-11-29 20:35:54,445 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 24 [2020-11-29 20:35:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:54,445 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2020-11-29 20:35:54,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:35:54,446 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2020-11-29 20:35:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 20:35:54,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:54,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:35:54,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:35:54,448 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:54,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:54,448 INFO L82 PathProgramCache]: Analyzing trace with hash 406595852, now seen corresponding path program 1 times [2020-11-29 20:35:54,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:54,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393638139] [2020-11-29 20:35:54,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:35:54,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393638139] [2020-11-29 20:35:54,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:35:54,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:35:54,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426785787] [2020-11-29 20:35:54,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:35:54,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:54,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:35:54,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:35:54,538 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand 5 states. [2020-11-29 20:35:54,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:54,696 INFO L93 Difference]: Finished difference Result 247 states and 354 transitions. [2020-11-29 20:35:54,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:35:54,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-29 20:35:54,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:54,700 INFO L225 Difference]: With dead ends: 247 [2020-11-29 20:35:54,700 INFO L226 Difference]: Without dead ends: 183 [2020-11-29 20:35:54,701 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 [2020-11-29 20:35:54,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-29 20:35:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2020-11-29 20:35:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 20:35:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2020-11-29 20:35:54,741 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 30 [2020-11-29 20:35:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:54,742 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2020-11-29 20:35:54,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:35:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2020-11-29 20:35:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 20:35:54,746 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:54,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:35:54,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:35:54,747 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:54,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:54,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1601220342, now seen corresponding path program 1 times [2020-11-29 20:35:54,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:54,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177582334] [2020-11-29 20:35:54,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:35:54,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177582334] [2020-11-29 20:35:54,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:35:54,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:35:54,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130917138] [2020-11-29 20:35:54,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:35:54,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:54,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:35:54,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:35:54,853 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand 4 states. [2020-11-29 20:35:54,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:54,991 INFO L93 Difference]: Finished difference Result 234 states and 328 transitions. [2020-11-29 20:35:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:35:54,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 20:35:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:54,993 INFO L225 Difference]: With dead ends: 234 [2020-11-29 20:35:54,994 INFO L226 Difference]: Without dead ends: 170 [2020-11-29 20:35:54,995 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 [2020-11-29 20:35:54,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-29 20:35:55,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2020-11-29 20:35:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-29 20:35:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 230 transitions. [2020-11-29 20:35:55,031 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 230 transitions. Word has length 31 [2020-11-29 20:35:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:55,036 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 230 transitions. [2020-11-29 20:35:55,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:35:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 230 transitions. [2020-11-29 20:35:55,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 20:35:55,042 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:55,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:35:55,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:35:55,042 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:55,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:55,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1343054904, now seen corresponding path program 1 times [2020-11-29 20:35:55,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:55,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909368095] [2020-11-29 20:35:55,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:35:55,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909368095] [2020-11-29 20:35:55,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:35:55,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:35:55,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787351046] [2020-11-29 20:35:55,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:35:55,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:55,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:35:55,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:35:55,126 INFO L87 Difference]: Start difference. First operand 167 states and 230 transitions. Second operand 4 states. [2020-11-29 20:35:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:55,219 INFO L93 Difference]: Finished difference Result 465 states and 652 transitions. [2020-11-29 20:35:55,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:35:55,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 20:35:55,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:55,223 INFO L225 Difference]: With dead ends: 465 [2020-11-29 20:35:55,224 INFO L226 Difference]: Without dead ends: 346 [2020-11-29 20:35:55,225 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 [2020-11-29 20:35:55,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-11-29 20:35:55,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 167. [2020-11-29 20:35:55,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-29 20:35:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2020-11-29 20:35:55,253 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 31 [2020-11-29 20:35:55,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:55,254 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2020-11-29 20:35:55,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:35:55,254 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2020-11-29 20:35:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 20:35:55,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:55,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:35:55,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:35:55,262 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:55,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:55,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1736081914, now seen corresponding path program 1 times [2020-11-29 20:35:55,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:55,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491911314] [2020-11-29 20:35:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:35:55,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491911314] [2020-11-29 20:35:55,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:35:55,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:35:55,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037409295] [2020-11-29 20:35:55,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:35:55,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:55,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:35:55,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:35:55,375 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand 6 states. [2020-11-29 20:35:55,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:55,513 INFO L93 Difference]: Finished difference Result 582 states and 811 transitions. [2020-11-29 20:35:55,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:35:55,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-11-29 20:35:55,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:55,517 INFO L225 Difference]: With dead ends: 582 [2020-11-29 20:35:55,518 INFO L226 Difference]: Without dead ends: 421 [2020-11-29 20:35:55,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:35:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-11-29 20:35:55,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 176. [2020-11-29 20:35:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-11-29 20:35:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 235 transitions. [2020-11-29 20:35:55,546 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 235 transitions. Word has length 31 [2020-11-29 20:35:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:55,548 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 235 transitions. [2020-11-29 20:35:55,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:35:55,549 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 235 transitions. [2020-11-29 20:35:55,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 20:35:55,551 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:55,551 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, 1] [2020-11-29 20:35:55,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 20:35:55,551 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:55,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:55,552 INFO L82 PathProgramCache]: Analyzing trace with hash -468355170, now seen corresponding path program 1 times [2020-11-29 20:35:55,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:55,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085112708] [2020-11-29 20:35:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:35:55,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085112708] [2020-11-29 20:35:55,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:35:55,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:35:55,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847732297] [2020-11-29 20:35:55,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:35:55,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:55,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:35:55,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:35:55,630 INFO L87 Difference]: Start difference. First operand 176 states and 235 transitions. Second operand 6 states. [2020-11-29 20:35:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:55,821 INFO L93 Difference]: Finished difference Result 834 states and 1114 transitions. [2020-11-29 20:35:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:35:55,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-11-29 20:35:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:55,828 INFO L225 Difference]: With dead ends: 834 [2020-11-29 20:35:55,828 INFO L226 Difference]: Without dead ends: 664 [2020-11-29 20:35:55,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:35:55,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-11-29 20:35:55,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 334. [2020-11-29 20:35:55,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-11-29 20:35:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 439 transitions. [2020-11-29 20:35:55,865 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 439 transitions. Word has length 34 [2020-11-29 20:35:55,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:55,866 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 439 transitions. [2020-11-29 20:35:55,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:35:55,867 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 439 transitions. [2020-11-29 20:35:55,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 20:35:55,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:55,869 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, 1] [2020-11-29 20:35:55,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 20:35:55,871 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:55,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:55,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1306652192, now seen corresponding path program 1 times [2020-11-29 20:35:55,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:55,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268654324] [2020-11-29 20:35:55,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:35:55,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268654324] [2020-11-29 20:35:55,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:35:55,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:35:55,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893111505] [2020-11-29 20:35:55,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:35:55,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:55,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:35:55,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:35:55,954 INFO L87 Difference]: Start difference. First operand 334 states and 439 transitions. Second operand 5 states. [2020-11-29 20:35:56,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:56,159 INFO L93 Difference]: Finished difference Result 740 states and 975 transitions. [2020-11-29 20:35:56,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:35:56,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-11-29 20:35:56,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:56,166 INFO L225 Difference]: With dead ends: 740 [2020-11-29 20:35:56,166 INFO L226 Difference]: Without dead ends: 502 [2020-11-29 20:35:56,167 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 [2020-11-29 20:35:56,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-11-29 20:35:56,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 328. [2020-11-29 20:35:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-11-29 20:35:56,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 427 transitions. [2020-11-29 20:35:56,199 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 427 transitions. Word has length 34 [2020-11-29 20:35:56,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:56,200 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 427 transitions. [2020-11-29 20:35:56,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:35:56,200 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 427 transitions. [2020-11-29 20:35:56,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-29 20:35:56,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:56,202 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, 1, 1, 1, 1] [2020-11-29 20:35:56,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 20:35:56,202 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:56,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:56,203 INFO L82 PathProgramCache]: Analyzing trace with hash -334162626, now seen corresponding path program 1 times [2020-11-29 20:35:56,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:56,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685231554] [2020-11-29 20:35:56,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 20:35:56,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685231554] [2020-11-29 20:35:56,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:35:56,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:35:56,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605868971] [2020-11-29 20:35:56,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:35:56,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:56,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:35:56,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:35:56,278 INFO L87 Difference]: Start difference. First operand 328 states and 427 transitions. Second operand 5 states. [2020-11-29 20:35:56,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:56,375 INFO L93 Difference]: Finished difference Result 745 states and 973 transitions. [2020-11-29 20:35:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:35:56,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-11-29 20:35:56,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:56,378 INFO L225 Difference]: With dead ends: 745 [2020-11-29 20:35:56,379 INFO L226 Difference]: Without dead ends: 423 [2020-11-29 20:35:56,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:35:56,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-11-29 20:35:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 328. [2020-11-29 20:35:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-11-29 20:35:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 421 transitions. [2020-11-29 20:35:56,418 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 421 transitions. Word has length 51 [2020-11-29 20:35:56,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:56,419 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 421 transitions. [2020-11-29 20:35:56,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:35:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 421 transitions. [2020-11-29 20:35:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-29 20:35:56,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:56,420 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, 1, 1, 1, 1] [2020-11-29 20:35:56,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 20:35:56,421 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:56,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:56,422 INFO L82 PathProgramCache]: Analyzing trace with hash 367437248, now seen corresponding path program 1 times [2020-11-29 20:35:56,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:56,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830001651] [2020-11-29 20:35:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 20:35:56,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830001651] [2020-11-29 20:35:56,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:35:56,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:35:56,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759379313] [2020-11-29 20:35:56,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:35:56,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:56,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:35:56,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:35:56,497 INFO L87 Difference]: Start difference. First operand 328 states and 421 transitions. Second operand 4 states. [2020-11-29 20:35:56,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:56,559 INFO L93 Difference]: Finished difference Result 668 states and 867 transitions. [2020-11-29 20:35:56,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:35:56,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-11-29 20:35:56,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:56,562 INFO L225 Difference]: With dead ends: 668 [2020-11-29 20:35:56,563 INFO L226 Difference]: Without dead ends: 346 [2020-11-29 20:35:56,563 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 [2020-11-29 20:35:56,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-11-29 20:35:56,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 262. [2020-11-29 20:35:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-11-29 20:35:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 335 transitions. [2020-11-29 20:35:56,589 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 335 transitions. Word has length 51 [2020-11-29 20:35:56,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:56,589 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 335 transitions. [2020-11-29 20:35:56,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:35:56,590 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 335 transitions. [2020-11-29 20:35:56,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-29 20:35:56,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:56,591 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, 1, 1, 1, 1] [2020-11-29 20:35:56,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 20:35:56,591 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:56,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:56,607 INFO L82 PathProgramCache]: Analyzing trace with hash -482312060, now seen corresponding path program 1 times [2020-11-29 20:35:56,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:56,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114709636] [2020-11-29 20:35:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:56,688 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:35:56,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114709636] [2020-11-29 20:35:56,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:35:56,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:35:56,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779956415] [2020-11-29 20:35:56,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:35:56,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:56,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:35:56,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:35:56,690 INFO L87 Difference]: Start difference. First operand 262 states and 335 transitions. Second operand 5 states. [2020-11-29 20:35:56,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:56,865 INFO L93 Difference]: Finished difference Result 678 states and 868 transitions. [2020-11-29 20:35:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:35:56,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-11-29 20:35:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:56,870 INFO L225 Difference]: With dead ends: 678 [2020-11-29 20:35:56,870 INFO L226 Difference]: Without dead ends: 676 [2020-11-29 20:35:56,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:35:56,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-11-29 20:35:56,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 262. [2020-11-29 20:35:56,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-11-29 20:35:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 333 transitions. [2020-11-29 20:35:56,902 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 333 transitions. Word has length 52 [2020-11-29 20:35:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:56,903 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 333 transitions. [2020-11-29 20:35:56,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:35:56,903 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 333 transitions. [2020-11-29 20:35:56,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-29 20:35:56,904 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:56,905 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, 1, 1, 1, 1, 1] [2020-11-29 20:35:56,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 20:35:56,906 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:56,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:56,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1533505646, now seen corresponding path program 1 times [2020-11-29 20:35:56,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:56,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74587191] [2020-11-29 20:35:56,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:35:56,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74587191] [2020-11-29 20:35:56,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265036752] [2020-11-29 20:35:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/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 [2020-11-29 20:35:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:35:57,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:35:57,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:35:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:35:57,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:35:57,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-29 20:35:57,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597496011] [2020-11-29 20:35:57,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:35:57,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:35:57,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:35:57,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:35:57,266 INFO L87 Difference]: Start difference. First operand 262 states and 333 transitions. Second operand 6 states. [2020-11-29 20:35:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:35:57,562 INFO L93 Difference]: Finished difference Result 805 states and 1042 transitions. [2020-11-29 20:35:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:35:57,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-11-29 20:35:57,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:35:57,566 INFO L225 Difference]: With dead ends: 805 [2020-11-29 20:35:57,567 INFO L226 Difference]: Without dead ends: 597 [2020-11-29 20:35:57,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:35:57,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-11-29 20:35:57,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 366. [2020-11-29 20:35:57,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-11-29 20:35:57,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 471 transitions. [2020-11-29 20:35:57,619 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 471 transitions. Word has length 53 [2020-11-29 20:35:57,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:35:57,619 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 471 transitions. [2020-11-29 20:35:57,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:35:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 471 transitions. [2020-11-29 20:35:57,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-29 20:35:57,621 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:35:57,621 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:35:57,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 20:35:57,834 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:35:57,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:35:57,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1340997472, now seen corresponding path program 2 times [2020-11-29 20:35:57,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:35:57,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95604376] [2020-11-29 20:35:57,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:35:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:35:57,943 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:35:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:35:58,020 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:35:58,096 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:35:58,099 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:35:58,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 20:35:58,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:35:58 BoogieIcfgContainer [2020-11-29 20:35:58,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:35:58,290 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:35:58,290 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:35:58,290 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:35:58,291 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:35:53" (3/4) ... [2020-11-29 20:35:58,292 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:35:58,450 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e737b740-e15b-4966-9e92-d58c7180efca/bin/uautomizer/witness.graphml [2020-11-29 20:35:58,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:35:58,452 INFO L168 Benchmark]: Toolchain (without parser) took 7202.55 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 68.5 MB in the beginning and 67.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 74.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:35:58,453 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory was 56.2 MB in the beginning and 56.1 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:35:58,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 563.92 ms. Allocated memory is still 96.5 MB. Free memory was 68.2 MB in the beginning and 62.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:35:58,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.88 ms. Allocated memory is still 96.5 MB. Free memory was 62.7 MB in the beginning and 58.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:35:58,454 INFO L168 Benchmark]: Boogie Preprocessor took 58.30 ms. Allocated memory is still 96.5 MB. Free memory was 58.5 MB in the beginning and 55.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:35:58,455 INFO L168 Benchmark]: RCFGBuilder took 1270.00 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 55.6 MB in the beginning and 76.3 MB in the end (delta: -20.7 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:35:58,456 INFO L168 Benchmark]: TraceAbstraction took 5003.25 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 75.6 MB in the beginning and 95.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:35:58,456 INFO L168 Benchmark]: Witness Printer took 160.88 ms. Allocated memory is still 172.0 MB. Free memory was 95.7 MB in the beginning and 67.4 MB in the end (delta: 28.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:35:58,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory was 56.2 MB in the beginning and 56.1 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 563.92 ms. Allocated memory is still 96.5 MB. Free memory was 68.2 MB in the beginning and 62.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 128.88 ms. Allocated memory is still 96.5 MB. Free memory was 62.7 MB in the beginning and 58.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.30 ms. Allocated memory is still 96.5 MB. Free memory was 58.5 MB in the beginning and 55.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1270.00 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 55.6 MB in the beginning and 76.3 MB in the end (delta: -20.7 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5003.25 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 75.6 MB in the beginning and 95.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. * Witness Printer took 160.88 ms. Allocated memory is still 172.0 MB. Free memory was 95.7 MB in the beginning and 67.4 MB in the end (delta: 28.3 MB). Peak memory consumption was 27.3 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: [L119] int pumpRunning = 0; [L120] int systemActive = 1; [L493] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L717] int cleanupTimeShifts = 4; [L816] int waterLevel = 1; [L817] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L793] int retValue_acc ; [L794] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L936] int retValue_acc ; [L939] retValue_acc = 1 [L940] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L800] tmp = valid_product() [L802] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L834] COND TRUE waterLevel < 2 [L835] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L127] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L185] COND FALSE !(\read(pumpRunning)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L159] COND TRUE ! pumpRunning [L296] int retValue_acc ; [L297] int tmp ; [L298] int tmp___0 ; [L896] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L899] COND FALSE !(waterLevel < 2) [L903] retValue_acc = 0 [L904] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L302] tmp = isHighWaterSensorDry() [L304] COND FALSE !(\read(tmp)) [L307] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L309] retValue_acc = tmp___0 [L310] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L161] tmp = isHighWaterLevel() [L163] COND TRUE \read(tmp) [L215] int tmp ; [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L219] tmp = isMethaneAlarm() [L221] COND FALSE !(\read(tmp)) [L210] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L697] tmp = getWaterLevel() [L699] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L127] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L822] COND TRUE waterLevel > 0 [L823] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L185] COND TRUE \read(pumpRunning) [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L187] tmp = isMethaneAlarm() [L189] COND FALSE !(\read(tmp)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L159] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L697] tmp = getWaterLevel() [L699] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L127] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L822] COND TRUE waterLevel > 0 [L823] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L185] COND TRUE \read(pumpRunning) [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L187] tmp = isMethaneAlarm() [L189] COND FALSE !(\read(tmp)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L159] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L697] tmp = getWaterLevel() [L699] COND TRUE tmp == 0 [L251] int retValue_acc ; [L254] retValue_acc = pumpRunning [L255] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L701] tmp___0 = isPumpRunning() [L703] 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_product45.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, 132 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1590 SDtfs, 2103 SDslu, 2472 SDs, 0 SdLazy, 372 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 1827 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 602 NumberOfCodeBlocks, 602 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 35411 SizeOfPredicates, 4 NumberOfNonLiveVariables, 432 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 64/70 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...