./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product56.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_c27f3b90-a41e-4892-8214-f1fd6055a473/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/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 8d89cb30057b8721685c80693144eb2455c18c87 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2020-11-28 03:00:03,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:00:03,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:00:03,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:00:03,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:00:03,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:00:03,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:00:03,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:00:03,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:00:03,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:00:03,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:00:03,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:00:03,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:00:03,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:00:03,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:00:03,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:00:03,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:00:03,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:00:03,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:00:03,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:00:03,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:00:03,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:00:03,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:00:03,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:00:03,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:00:03,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:00:03,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:00:03,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:00:03,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:00:03,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:00:03,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:00:03,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:00:03,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:00:03,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:00:03,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:00:03,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:00:03,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:00:03,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:00:03,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:00:03,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:00:03,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:00:03,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:00:03,402 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:00:03,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:00:03,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:00:03,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:00:03,405 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:00:03,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:00:03,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:00:03,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:00:03,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:00:03,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:00:03,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:00:03,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:00:03,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:00:03,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:00:03,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:00:03,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:00:03,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:00:03,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:00:03,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:00:03,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:00:03,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:00:03,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:00:03,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:00:03,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:00:03,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:00:03,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:00:03,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:00:03,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:00:03,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:00:03,415 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_c27f3b90-a41e-4892-8214-f1fd6055a473/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d89cb30057b8721685c80693144eb2455c18c87 [2020-11-28 03:00:03,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:00:03,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:00:03,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:00:03,792 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:00:03,795 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:00:03,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c [2020-11-28 03:00:03,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/bin/uautomizer/data/6b6bcd732/ede5fdc3a6034d55a4f4c1d80778af23/FLAGc4f91b151 [2020-11-28 03:00:04,622 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:00:04,623 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c [2020-11-28 03:00:04,647 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/bin/uautomizer/data/6b6bcd732/ede5fdc3a6034d55a4f4c1d80778af23/FLAGc4f91b151 [2020-11-28 03:00:04,867 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/bin/uautomizer/data/6b6bcd732/ede5fdc3a6034d55a4f4c1d80778af23 [2020-11-28 03:00:04,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:00:04,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:00:04,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:04,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:00:04,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:00:04,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:04" (1/1) ... [2020-11-28 03:00:04,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77210846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:04, skipping insertion in model container [2020-11-28 03:00:04,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:04" (1/1) ... [2020-11-28 03:00:04,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:00:04,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:00:05,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:05,469 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:00:05,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:05,609 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:00:05,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:05 WrapperNode [2020-11-28 03:00:05,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:05,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:05,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:00:05,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:00:05,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:05" (1/1) ... [2020-11-28 03:00:05,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:05" (1/1) ... [2020-11-28 03:00:05,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:05,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:00:05,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:00:05,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:00:05,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:05" (1/1) ... [2020-11-28 03:00:05,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:05" (1/1) ... [2020-11-28 03:00:05,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:05" (1/1) ... [2020-11-28 03:00:05,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:05" (1/1) ... [2020-11-28 03:00:05,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:05" (1/1) ... [2020-11-28 03:00:05,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:05" (1/1) ... [2020-11-28 03:00:05,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:05" (1/1) ... [2020-11-28 03:00:05,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:00:05,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:00:05,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:00:05,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:00:05,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/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 [2020-11-28 03:00:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:00:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:00:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:00:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:00:07,616 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:00:07,616 INFO L298 CfgBuilder]: Removed 288 assume(true) statements. [2020-11-28 03:00:07,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:07 BoogieIcfgContainer [2020-11-28 03:00:07,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:00:07,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:00:07,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:00:07,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:00:07,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:00:04" (1/3) ... [2020-11-28 03:00:07,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4970456e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:07, skipping insertion in model container [2020-11-28 03:00:07,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:05" (2/3) ... [2020-11-28 03:00:07,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4970456e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:07, skipping insertion in model container [2020-11-28 03:00:07,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:07" (3/3) ... [2020-11-28 03:00:07,629 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2020-11-28 03:00:07,642 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:00:07,648 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 03:00:07,663 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 03:00:07,695 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:00:07,696 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:00:07,696 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:00:07,696 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:00:07,696 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:00:07,696 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:00:07,696 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:00:07,697 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:00:07,722 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states. [2020-11-28 03:00:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:00:07,737 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:07,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:07,738 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:07,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:07,745 INFO L82 PathProgramCache]: Analyzing trace with hash 326185497, now seen corresponding path program 1 times [2020-11-28 03:00:07,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:07,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483621836] [2020-11-28 03:00:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:08,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483621836] [2020-11-28 03:00:08,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:08,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:00:08,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533494470] [2020-11-28 03:00:08,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:00:08,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:08,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:00:08,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:00:08,226 INFO L87 Difference]: Start difference. First operand 194 states. Second operand 2 states. [2020-11-28 03:00:08,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:08,314 INFO L93 Difference]: Finished difference Result 379 states and 578 transitions. [2020-11-28 03:00:08,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:00:08,315 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-28 03:00:08,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:08,330 INFO L225 Difference]: With dead ends: 379 [2020-11-28 03:00:08,330 INFO L226 Difference]: Without dead ends: 187 [2020-11-28 03:00:08,335 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 [2020-11-28 03:00:08,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-28 03:00:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-11-28 03:00:08,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-28 03:00:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 279 transitions. [2020-11-28 03:00:08,407 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 279 transitions. Word has length 16 [2020-11-28 03:00:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:08,407 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 279 transitions. [2020-11-28 03:00:08,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:00:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 279 transitions. [2020-11-28 03:00:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:00:08,409 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:08,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:08,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:00:08,410 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:08,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:08,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1699548539, now seen corresponding path program 1 times [2020-11-28 03:00:08,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:08,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351125977] [2020-11-28 03:00:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:08,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351125977] [2020-11-28 03:00:08,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:08,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:00:08,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599887674] [2020-11-28 03:00:08,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:00:08,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:08,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:00:08,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:00:08,566 INFO L87 Difference]: Start difference. First operand 187 states and 279 transitions. Second operand 3 states. [2020-11-28 03:00:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:08,588 INFO L93 Difference]: Finished difference Result 187 states and 279 transitions. [2020-11-28 03:00:08,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:00:08,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:00:08,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:08,590 INFO L225 Difference]: With dead ends: 187 [2020-11-28 03:00:08,590 INFO L226 Difference]: Without dead ends: 73 [2020-11-28 03:00:08,591 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 [2020-11-28 03:00:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-28 03:00:08,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-11-28 03:00:08,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 03:00:08,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2020-11-28 03:00:08,599 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 17 [2020-11-28 03:00:08,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:08,600 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2020-11-28 03:00:08,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:00:08,600 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2020-11-28 03:00:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:00:08,602 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:08,602 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] [2020-11-28 03:00:08,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:00:08,602 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:08,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1577730230, now seen corresponding path program 1 times [2020-11-28 03:00:08,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:08,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603702929] [2020-11-28 03:00:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:08,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603702929] [2020-11-28 03:00:08,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:08,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:00:08,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73314614] [2020-11-28 03:00:08,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:00:08,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:08,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:00:08,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:00:08,788 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand 5 states. [2020-11-28 03:00:08,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:08,924 INFO L93 Difference]: Finished difference Result 163 states and 244 transitions. [2020-11-28 03:00:08,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:00:08,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-28 03:00:08,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:08,929 INFO L225 Difference]: With dead ends: 163 [2020-11-28 03:00:08,931 INFO L226 Difference]: Without dead ends: 96 [2020-11-28 03:00:08,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:00:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-28 03:00:08,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2020-11-28 03:00:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-28 03:00:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 137 transitions. [2020-11-28 03:00:08,959 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 137 transitions. Word has length 22 [2020-11-28 03:00:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:08,959 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 137 transitions. [2020-11-28 03:00:08,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:00:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 137 transitions. [2020-11-28 03:00:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:00:08,961 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:08,962 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] [2020-11-28 03:00:08,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:00:08,962 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:08,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:08,963 INFO L82 PathProgramCache]: Analyzing trace with hash 792163456, now seen corresponding path program 1 times [2020-11-28 03:00:08,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:08,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561811500] [2020-11-28 03:00:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:09,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561811500] [2020-11-28 03:00:09,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:09,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:00:09,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768417325] [2020-11-28 03:00:09,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:00:09,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:09,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:00:09,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:00:09,046 INFO L87 Difference]: Start difference. First operand 92 states and 137 transitions. Second operand 3 states. [2020-11-28 03:00:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:09,124 INFO L93 Difference]: Finished difference Result 187 states and 280 transitions. [2020-11-28 03:00:09,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:00:09,125 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-28 03:00:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:09,127 INFO L225 Difference]: With dead ends: 187 [2020-11-28 03:00:09,127 INFO L226 Difference]: Without dead ends: 101 [2020-11-28 03:00:09,128 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 [2020-11-28 03:00:09,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-28 03:00:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-11-28 03:00:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-28 03:00:09,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 141 transitions. [2020-11-28 03:00:09,141 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 141 transitions. Word has length 25 [2020-11-28 03:00:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:09,142 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 141 transitions. [2020-11-28 03:00:09,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:00:09,142 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 141 transitions. [2020-11-28 03:00:09,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:00:09,143 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:09,144 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] [2020-11-28 03:00:09,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:00:09,144 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:09,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:09,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1022954699, now seen corresponding path program 1 times [2020-11-28 03:00:09,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:09,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012310570] [2020-11-28 03:00:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:09,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012310570] [2020-11-28 03:00:09,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:09,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:09,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62408642] [2020-11-28 03:00:09,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:00:09,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:09,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:00:09,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:00:09,247 INFO L87 Difference]: Start difference. First operand 99 states and 141 transitions. Second operand 5 states. [2020-11-28 03:00:09,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:09,375 INFO L93 Difference]: Finished difference Result 485 states and 703 transitions. [2020-11-28 03:00:09,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:00:09,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-28 03:00:09,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:09,381 INFO L225 Difference]: With dead ends: 485 [2020-11-28 03:00:09,381 INFO L226 Difference]: Without dead ends: 392 [2020-11-28 03:00:09,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:00:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-11-28 03:00:09,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 184. [2020-11-28 03:00:09,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-11-28 03:00:09,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 260 transitions. [2020-11-28 03:00:09,436 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 260 transitions. Word has length 25 [2020-11-28 03:00:09,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:09,437 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 260 transitions. [2020-11-28 03:00:09,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:00:09,437 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 260 transitions. [2020-11-28 03:00:09,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:00:09,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:09,440 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] [2020-11-28 03:00:09,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:00:09,440 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:09,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:09,441 INFO L82 PathProgramCache]: Analyzing trace with hash 819147605, now seen corresponding path program 1 times [2020-11-28 03:00:09,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:09,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66943809] [2020-11-28 03:00:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:09,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66943809] [2020-11-28 03:00:09,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:09,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:09,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409420638] [2020-11-28 03:00:09,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:00:09,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:09,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:00:09,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:00:09,584 INFO L87 Difference]: Start difference. First operand 184 states and 260 transitions. Second operand 5 states. [2020-11-28 03:00:09,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:09,818 INFO L93 Difference]: Finished difference Result 522 states and 741 transitions. [2020-11-28 03:00:09,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:00:09,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-28 03:00:09,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:09,823 INFO L225 Difference]: With dead ends: 522 [2020-11-28 03:00:09,823 INFO L226 Difference]: Without dead ends: 520 [2020-11-28 03:00:09,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:00:09,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-11-28 03:00:09,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 184. [2020-11-28 03:00:09,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-11-28 03:00:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 258 transitions. [2020-11-28 03:00:09,857 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 258 transitions. Word has length 26 [2020-11-28 03:00:09,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:09,862 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 258 transitions. [2020-11-28 03:00:09,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:00:09,862 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 258 transitions. [2020-11-28 03:00:09,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:00:09,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:09,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:09,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:00:09,870 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:09,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:09,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1010263109, now seen corresponding path program 1 times [2020-11-28 03:00:09,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:09,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164200425] [2020-11-28 03:00:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:09,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164200425] [2020-11-28 03:00:09,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:09,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:00:09,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009111497] [2020-11-28 03:00:09,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:00:09,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:09,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:00:09,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:00:09,949 INFO L87 Difference]: Start difference. First operand 184 states and 258 transitions. Second operand 5 states. [2020-11-28 03:00:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:10,095 INFO L93 Difference]: Finished difference Result 534 states and 740 transitions. [2020-11-28 03:00:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:00:10,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-11-28 03:00:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:10,099 INFO L225 Difference]: With dead ends: 534 [2020-11-28 03:00:10,099 INFO L226 Difference]: Without dead ends: 356 [2020-11-28 03:00:10,100 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 [2020-11-28 03:00:10,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-11-28 03:00:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 202. [2020-11-28 03:00:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-28 03:00:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 276 transitions. [2020-11-28 03:00:10,141 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 276 transitions. Word has length 32 [2020-11-28 03:00:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:10,143 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 276 transitions. [2020-11-28 03:00:10,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:00:10,146 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 276 transitions. [2020-11-28 03:00:10,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:00:10,152 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:10,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:10,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:00:10,153 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:10,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:10,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1403290119, now seen corresponding path program 1 times [2020-11-28 03:00:10,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:10,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73672538] [2020-11-28 03:00:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:10,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73672538] [2020-11-28 03:00:10,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:10,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:00:10,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108973181] [2020-11-28 03:00:10,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:00:10,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:10,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:00:10,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:00:10,268 INFO L87 Difference]: Start difference. First operand 202 states and 276 transitions. Second operand 6 states. [2020-11-28 03:00:10,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:10,479 INFO L93 Difference]: Finished difference Result 584 states and 790 transitions. [2020-11-28 03:00:10,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:00:10,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-11-28 03:00:10,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:10,482 INFO L225 Difference]: With dead ends: 584 [2020-11-28 03:00:10,483 INFO L226 Difference]: Without dead ends: 388 [2020-11-28 03:00:10,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:00:10,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-11-28 03:00:10,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 214. [2020-11-28 03:00:10,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-11-28 03:00:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 288 transitions. [2020-11-28 03:00:10,511 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 288 transitions. Word has length 32 [2020-11-28 03:00:10,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:10,512 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 288 transitions. [2020-11-28 03:00:10,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:00:10,512 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 288 transitions. [2020-11-28 03:00:10,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:00:10,513 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:10,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:10,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:00:10,513 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:10,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:10,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1145124681, now seen corresponding path program 1 times [2020-11-28 03:00:10,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:10,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621050119] [2020-11-28 03:00:10,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:10,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621050119] [2020-11-28 03:00:10,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:10,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:00:10,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054559404] [2020-11-28 03:00:10,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:00:10,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:10,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:00:10,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:00:10,576 INFO L87 Difference]: Start difference. First operand 214 states and 288 transitions. Second operand 3 states. [2020-11-28 03:00:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:10,662 INFO L93 Difference]: Finished difference Result 512 states and 688 transitions. [2020-11-28 03:00:10,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:00:10,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-11-28 03:00:10,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:10,665 INFO L225 Difference]: With dead ends: 512 [2020-11-28 03:00:10,667 INFO L226 Difference]: Without dead ends: 304 [2020-11-28 03:00:10,668 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 [2020-11-28 03:00:10,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-11-28 03:00:10,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2020-11-28 03:00:10,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-11-28 03:00:10,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 400 transitions. [2020-11-28 03:00:10,705 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 400 transitions. Word has length 32 [2020-11-28 03:00:10,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:10,706 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 400 transitions. [2020-11-28 03:00:10,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:00:10,707 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 400 transitions. [2020-11-28 03:00:10,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 03:00:10,709 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:10,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:10,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:00:10,709 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:10,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:10,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2078796085, now seen corresponding path program 1 times [2020-11-28 03:00:10,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:10,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794539452] [2020-11-28 03:00:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:10,830 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:10,917 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:10,996 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:10,996 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:00:10,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:00:11,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:00:11 BoogieIcfgContainer [2020-11-28 03:00:11,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:00:11,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:00:11,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:00:11,163 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:00:11,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:07" (3/4) ... [2020-11-28 03:00:11,166 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:00:11,312 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c27f3b90-a41e-4892-8214-f1fd6055a473/bin/uautomizer/witness.graphml [2020-11-28 03:00:11,312 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:00:11,315 INFO L168 Benchmark]: Toolchain (without parser) took 6439.38 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 82.8 MB in the beginning and 50.2 MB in the end (delta: 32.6 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:11,316 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 79.7 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:11,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.95 ms. Allocated memory is still 111.1 MB. Free memory was 82.8 MB in the beginning and 77.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:11,317 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.27 ms. Allocated memory is still 111.1 MB. Free memory was 77.6 MB in the beginning and 72.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:11,319 INFO L168 Benchmark]: Boogie Preprocessor took 92.49 ms. Allocated memory is still 111.1 MB. Free memory was 72.5 MB in the beginning and 68.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:11,322 INFO L168 Benchmark]: RCFGBuilder took 1819.70 ms. Allocated memory is still 111.1 MB. Free memory was 68.7 MB in the beginning and 78.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:11,322 INFO L168 Benchmark]: TraceAbstraction took 3541.01 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 78.2 MB in the beginning and 63.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:11,323 INFO L168 Benchmark]: Witness Printer took 149.98 ms. Allocated memory is still 140.5 MB. Free memory was 63.8 MB in the beginning and 50.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:11,327 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 79.7 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 731.95 ms. Allocated memory is still 111.1 MB. Free memory was 82.8 MB in the beginning and 77.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.27 ms. Allocated memory is still 111.1 MB. Free memory was 77.6 MB in the beginning and 72.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 92.49 ms. Allocated memory is still 111.1 MB. Free memory was 72.5 MB in the beginning and 68.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1819.70 ms. Allocated memory is still 111.1 MB. Free memory was 68.7 MB in the beginning and 78.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3541.01 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 78.2 MB in the beginning and 63.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. * Witness Printer took 149.98 ms. Allocated memory is still 140.5 MB. Free memory was 63.8 MB in the beginning and 50.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 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: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L492] int pumpRunning = 0; [L493] int systemActive = 1; [L813] int cleanupTimeShifts = 4; [L910] int waterLevel = 1; [L911] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L886] int retValue_acc ; [L887] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L768] int retValue_acc ; [L771] retValue_acc = 1 [L772] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L893] tmp = valid_product() [L895] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L415] int splverifierCounter ; [L416] int tmp ; [L417] int tmp___0 ; [L418] int tmp___1 ; [L419] int tmp___2 ; [L422] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L424] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L426] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] tmp = __VERIFIER_nondet_int() [L434] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L928] COND TRUE waterLevel < 2 [L929] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L442] tmp___0 = __VERIFIER_nondet_int() [L444] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L940] COND FALSE !(\read(methaneLevelCritical)) [L943] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L452] tmp___2 = __VERIFIER_nondet_int() [L454] COND TRUE \read(tmp___2) [L734] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L500] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L507] COND TRUE \read(systemActive) [L581] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L584] COND FALSE !(\read(pumpRunning)) [L555] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L558] COND FALSE !(\read(pumpRunning)) [L529] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L532] COND TRUE ! pumpRunning [L678] int retValue_acc ; [L679] int tmp ; [L680] int tmp___0 ; [L990] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L993] COND FALSE !(waterLevel < 2) [L997] retValue_acc = 0 [L998] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L684] tmp = isHighWaterSensorDry() [L686] COND FALSE !(\read(tmp)) [L689] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L691] retValue_acc = tmp___0 [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L534] tmp = isHighWaterLevel() [L536] COND TRUE \read(tmp) [L609] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L779] int tmp ; [L780] int tmp___0 ; [L949] int retValue_acc ; [L952] retValue_acc = methaneLevelCritical [L953] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L784] tmp = isMethaneLevelCritical() [L786] COND TRUE \read(tmp) [L633] int retValue_acc ; [L636] retValue_acc = pumpRunning [L637] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L788] tmp___0 = isPumpRunning() [L790] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L3] __assert_fail("0", "minepump_spec1_product56.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 194 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1182 SDtfs, 1711 SDslu, 1365 SDs, 0 SdLazy, 207 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=304occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 878 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 260 NumberOfCodeBlocks, 260 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 10664 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...