./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.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_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/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 e155c6ff67a88d7a4e2430bd4435eb1c3cafcd71 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:56:39,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:56:39,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:56:39,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:56:39,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:56:39,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:56:39,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:56:39,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:56:39,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:56:39,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:56:39,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:56:39,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:56:39,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:56:39,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:56:39,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:56:39,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:56:39,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:56:39,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:56:39,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:56:39,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:56:39,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:56:39,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:56:39,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:56:39,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:56:39,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:56:39,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:56:39,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:56:39,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:56:39,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:56:39,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:56:39,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:56:39,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:56:39,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:56:39,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:56:39,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:56:39,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:56:39,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:56:39,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:56:39,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:56:39,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:56:39,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:56:39,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:56:39,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:56:39,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:56:39,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:56:39,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:56:39,407 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:56:39,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:56:39,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:56:39,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:56:39,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:56:39,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:56:39,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:56:39,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:56:39,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:56:39,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:56:39,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:56:39,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:56:39,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:56:39,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:56:39,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:56:39,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:56:39,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:56:39,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:56:39,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:56:39,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:56:39,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:56:39,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:56:39,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:56:39,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:56:39,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:56:39,415 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_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e155c6ff67a88d7a4e2430bd4435eb1c3cafcd71 [2020-11-29 19:56:39,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:56:39,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:56:39,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:56:39,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:56:39,783 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:56:39,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2020-11-29 19:56:39,870 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/bin/uautomizer/data/eb5529ddd/72ba5e40e48e428babad7945d5aaf0fc/FLAGcf345210b [2020-11-29 19:56:40,513 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:56:40,513 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2020-11-29 19:56:40,541 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/bin/uautomizer/data/eb5529ddd/72ba5e40e48e428babad7945d5aaf0fc/FLAGcf345210b [2020-11-29 19:56:40,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/bin/uautomizer/data/eb5529ddd/72ba5e40e48e428babad7945d5aaf0fc [2020-11-29 19:56:40,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:56:40,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:56:40,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:56:40,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:56:40,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:56:40,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:56:40" (1/1) ... [2020-11-29 19:56:40,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e137d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:56:40, skipping insertion in model container [2020-11-29 19:56:40,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:56:40" (1/1) ... [2020-11-29 19:56:40,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:56:40,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:56:41,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:56:41,213 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:56:41,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:56:41,434 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:56:41,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:56:41 WrapperNode [2020-11-29 19:56:41,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:56:41,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:56:41,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:56:41,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:56:41,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:56:41" (1/1) ... [2020-11-29 19:56:41,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:56:41" (1/1) ... [2020-11-29 19:56:41,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:56:41,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:56:41,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:56:41,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:56:41,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:56:41" (1/1) ... [2020-11-29 19:56:41,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:56:41" (1/1) ... [2020-11-29 19:56:41,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:56:41" (1/1) ... [2020-11-29 19:56:41,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:56:41" (1/1) ... [2020-11-29 19:56:41,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:56:41" (1/1) ... [2020-11-29 19:56:41,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:56:41" (1/1) ... [2020-11-29 19:56:41,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:56:41" (1/1) ... [2020-11-29 19:56:41,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:56:41,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:56:41,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:56:41,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:56:41,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:56:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/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 19:56:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:56:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:56:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:56:41,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:56:42,936 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:56:42,937 INFO L298 CfgBuilder]: Removed 162 assume(true) statements. [2020-11-29 19:56:42,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:56:42 BoogieIcfgContainer [2020-11-29 19:56:42,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:56:42,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:56:42,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:56:42,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:56:42,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:56:40" (1/3) ... [2020-11-29 19:56:42,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192a56e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:56:42, skipping insertion in model container [2020-11-29 19:56:42,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:56:41" (2/3) ... [2020-11-29 19:56:42,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192a56e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:56:42, skipping insertion in model container [2020-11-29 19:56:42,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:56:42" (3/3) ... [2020-11-29 19:56:42,953 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2020-11-29 19:56:42,967 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:56:42,973 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 19:56:42,988 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 19:56:43,028 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:56:43,028 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:56:43,028 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:56:43,029 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:56:43,029 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:56:43,029 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:56:43,029 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:56:43,029 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:56:43,049 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-11-29 19:56:43,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:56:43,054 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:43,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:56:43,056 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:43,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:43,062 INFO L82 PathProgramCache]: Analyzing trace with hash -450260872, now seen corresponding path program 1 times [2020-11-29 19:56:43,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:43,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025549103] [2020-11-29 19:56:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:43,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025549103] [2020-11-29 19:56:43,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:43,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:56:43,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972734438] [2020-11-29 19:56:43,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:56:43,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:43,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:56:43,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:56:43,463 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 2 states. [2020-11-29 19:56:43,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:43,521 INFO L93 Difference]: Finished difference Result 219 states and 332 transitions. [2020-11-29 19:56:43,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:56:43,523 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-29 19:56:43,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:43,536 INFO L225 Difference]: With dead ends: 219 [2020-11-29 19:56:43,536 INFO L226 Difference]: Without dead ends: 107 [2020-11-29 19:56:43,540 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 19:56:43,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-29 19:56:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-11-29 19:56:43,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-29 19:56:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2020-11-29 19:56:43,624 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2020-11-29 19:56:43,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:43,625 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2020-11-29 19:56:43,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:56:43,626 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2020-11-29 19:56:43,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 19:56:43,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:43,631 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 19:56:43,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:56:43,633 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:43,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:43,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1497017769, now seen corresponding path program 1 times [2020-11-29 19:56:43,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:43,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214813742] [2020-11-29 19:56:43,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:43,864 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 19:56:43,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214813742] [2020-11-29 19:56:43,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:43,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:56:43,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272127117] [2020-11-29 19:56:43,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:56:43,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:43,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:56:43,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:56:43,868 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand 3 states. [2020-11-29 19:56:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:43,882 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2020-11-29 19:56:43,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:56:43,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-29 19:56:43,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:43,884 INFO L225 Difference]: With dead ends: 107 [2020-11-29 19:56:43,884 INFO L226 Difference]: Without dead ends: 45 [2020-11-29 19:56:43,886 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 19:56:43,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-29 19:56:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-29 19:56:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 19:56:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2020-11-29 19:56:43,893 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 17 [2020-11-29 19:56:43,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:43,893 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2020-11-29 19:56:43,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:56:43,894 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2020-11-29 19:56:43,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:56:43,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:43,895 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 19:56:43,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:56:43,896 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:43,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:43,897 INFO L82 PathProgramCache]: Analyzing trace with hash -720159228, now seen corresponding path program 1 times [2020-11-29 19:56:43,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:43,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023334120] [2020-11-29 19:56:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:44,068 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 19:56:44,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023334120] [2020-11-29 19:56:44,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:44,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:56:44,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033649989] [2020-11-29 19:56:44,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:56:44,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:44,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:56:44,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:56:44,071 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand 6 states. [2020-11-29 19:56:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:44,301 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2020-11-29 19:56:44,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:56:44,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-29 19:56:44,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:44,306 INFO L225 Difference]: With dead ends: 84 [2020-11-29 19:56:44,308 INFO L226 Difference]: Without dead ends: 45 [2020-11-29 19:56:44,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:56:44,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-29 19:56:44,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-29 19:56:44,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 19:56:44,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2020-11-29 19:56:44,320 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 22 [2020-11-29 19:56:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:44,321 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2020-11-29 19:56:44,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:56:44,322 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2020-11-29 19:56:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 19:56:44,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:44,325 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 19:56:44,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:56:44,327 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:44,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:44,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2091202829, now seen corresponding path program 1 times [2020-11-29 19:56:44,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:44,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954489756] [2020-11-29 19:56:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:44,433 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 19:56:44,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954489756] [2020-11-29 19:56:44,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:44,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:56:44,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321422543] [2020-11-29 19:56:44,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:56:44,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:44,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:56:44,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:56:44,436 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 3 states. [2020-11-29 19:56:44,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:44,490 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2020-11-29 19:56:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:56:44,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-29 19:56:44,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:44,492 INFO L225 Difference]: With dead ends: 105 [2020-11-29 19:56:44,492 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 19:56:44,493 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 19:56:44,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 19:56:44,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-11-29 19:56:44,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-29 19:56:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2020-11-29 19:56:44,516 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 24 [2020-11-29 19:56:44,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:44,516 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2020-11-29 19:56:44,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:56:44,517 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2020-11-29 19:56:44,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 19:56:44,518 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:44,519 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 19:56:44,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:56:44,519 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:44,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:44,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1013899842, now seen corresponding path program 1 times [2020-11-29 19:56:44,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:44,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901800199] [2020-11-29 19:56:44,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:44,644 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 19:56:44,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901800199] [2020-11-29 19:56:44,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:44,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:56:44,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904182317] [2020-11-29 19:56:44,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:56:44,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:44,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:56:44,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:56:44,647 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand 5 states. [2020-11-29 19:56:44,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:44,788 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2020-11-29 19:56:44,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:56:44,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-29 19:56:44,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:44,790 INFO L225 Difference]: With dead ends: 171 [2020-11-29 19:56:44,790 INFO L226 Difference]: Without dead ends: 113 [2020-11-29 19:56:44,791 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 19:56:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-29 19:56:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2020-11-29 19:56:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-29 19:56:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2020-11-29 19:56:44,803 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 30 [2020-11-29 19:56:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:44,803 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-11-29 19:56:44,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:56:44,804 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2020-11-29 19:56:44,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 19:56:44,805 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:44,805 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 19:56:44,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 19:56:44,806 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:44,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:44,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1648611201, now seen corresponding path program 1 times [2020-11-29 19:56:44,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:44,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275481552] [2020-11-29 19:56:44,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:56:44,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275481552] [2020-11-29 19:56:44,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:44,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:56:44,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692764756] [2020-11-29 19:56:44,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:56:44,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:44,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:56:44,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:56:44,896 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 5 states. [2020-11-29 19:56:45,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:45,046 INFO L93 Difference]: Finished difference Result 247 states and 346 transitions. [2020-11-29 19:56:45,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:56:45,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-29 19:56:45,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:45,049 INFO L225 Difference]: With dead ends: 247 [2020-11-29 19:56:45,049 INFO L226 Difference]: Without dead ends: 183 [2020-11-29 19:56:45,050 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 19:56:45,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-29 19:56:45,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2020-11-29 19:56:45,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 19:56:45,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 152 transitions. [2020-11-29 19:56:45,067 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 152 transitions. Word has length 30 [2020-11-29 19:56:45,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:45,068 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 152 transitions. [2020-11-29 19:56:45,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:56:45,068 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 152 transitions. [2020-11-29 19:56:45,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 19:56:45,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:45,070 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 19:56:45,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 19:56:45,070 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:45,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:45,071 INFO L82 PathProgramCache]: Analyzing trace with hash -359204993, now seen corresponding path program 1 times [2020-11-29 19:56:45,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:45,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641139991] [2020-11-29 19:56:45,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:45,127 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 19:56:45,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641139991] [2020-11-29 19:56:45,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:45,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:56:45,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535774561] [2020-11-29 19:56:45,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:56:45,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:45,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:56:45,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:56:45,130 INFO L87 Difference]: Start difference. First operand 113 states and 152 transitions. Second operand 4 states. [2020-11-29 19:56:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:45,272 INFO L93 Difference]: Finished difference Result 234 states and 321 transitions. [2020-11-29 19:56:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:56:45,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 19:56:45,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:45,277 INFO L225 Difference]: With dead ends: 234 [2020-11-29 19:56:45,277 INFO L226 Difference]: Without dead ends: 170 [2020-11-29 19:56:45,278 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 19:56:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-29 19:56:45,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2020-11-29 19:56:45,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-29 19:56:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2020-11-29 19:56:45,309 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 31 [2020-11-29 19:56:45,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:45,309 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2020-11-29 19:56:45,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:56:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2020-11-29 19:56:45,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 19:56:45,311 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:45,312 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 19:56:45,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 19:56:45,312 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:45,313 INFO L82 PathProgramCache]: Analyzing trace with hash -101039555, now seen corresponding path program 1 times [2020-11-29 19:56:45,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:45,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108319316] [2020-11-29 19:56:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:45,374 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 19:56:45,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108319316] [2020-11-29 19:56:45,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:45,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:56:45,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843665786] [2020-11-29 19:56:45,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:56:45,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:45,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:56:45,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:56:45,377 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. Second operand 4 states. [2020-11-29 19:56:45,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:45,467 INFO L93 Difference]: Finished difference Result 394 states and 542 transitions. [2020-11-29 19:56:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:56:45,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 19:56:45,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:45,470 INFO L225 Difference]: With dead ends: 394 [2020-11-29 19:56:45,470 INFO L226 Difference]: Without dead ends: 275 [2020-11-29 19:56:45,472 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 19:56:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-11-29 19:56:45,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 161. [2020-11-29 19:56:45,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-29 19:56:45,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 217 transitions. [2020-11-29 19:56:45,505 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 217 transitions. Word has length 31 [2020-11-29 19:56:45,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:45,506 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 217 transitions. [2020-11-29 19:56:45,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:56:45,506 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 217 transitions. [2020-11-29 19:56:45,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 19:56:45,507 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:45,508 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 19:56:45,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 19:56:45,508 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:45,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:45,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1138389688, now seen corresponding path program 1 times [2020-11-29 19:56:45,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:45,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205569829] [2020-11-29 19:56:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:45,569 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 19:56:45,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205569829] [2020-11-29 19:56:45,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:45,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:56:45,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968610358] [2020-11-29 19:56:45,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:56:45,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:45,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:56:45,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:56:45,572 INFO L87 Difference]: Start difference. First operand 161 states and 217 transitions. Second operand 5 states. [2020-11-29 19:56:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:45,802 INFO L93 Difference]: Finished difference Result 347 states and 473 transitions. [2020-11-29 19:56:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:56:45,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-29 19:56:45,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:45,805 INFO L225 Difference]: With dead ends: 347 [2020-11-29 19:56:45,805 INFO L226 Difference]: Without dead ends: 234 [2020-11-29 19:56:45,806 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 19:56:45,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-29 19:56:45,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 157. [2020-11-29 19:56:45,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-29 19:56:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 209 transitions. [2020-11-29 19:56:45,826 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 209 transitions. Word has length 31 [2020-11-29 19:56:45,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:45,826 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 209 transitions. [2020-11-29 19:56:45,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:56:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 209 transitions. [2020-11-29 19:56:45,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-29 19:56:45,835 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:45,836 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] [2020-11-29 19:56:45,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 19:56:45,836 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:45,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:45,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2032974090, now seen corresponding path program 1 times [2020-11-29 19:56:45,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:45,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128833272] [2020-11-29 19:56:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:45,946 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 19:56:45,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128833272] [2020-11-29 19:56:45,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:45,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 19:56:45,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427037622] [2020-11-29 19:56:45,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:56:45,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:45,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:56:45,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:56:45,949 INFO L87 Difference]: Start difference. First operand 157 states and 209 transitions. Second operand 6 states. [2020-11-29 19:56:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:46,076 INFO L93 Difference]: Finished difference Result 331 states and 442 transitions. [2020-11-29 19:56:46,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:56:46,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-11-29 19:56:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:46,080 INFO L225 Difference]: With dead ends: 331 [2020-11-29 19:56:46,080 INFO L226 Difference]: Without dead ends: 180 [2020-11-29 19:56:46,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:56:46,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-29 19:56:46,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 133. [2020-11-29 19:56:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-11-29 19:56:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 173 transitions. [2020-11-29 19:56:46,098 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 173 transitions. Word has length 48 [2020-11-29 19:56:46,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:46,099 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 173 transitions. [2020-11-29 19:56:46,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:56:46,099 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 173 transitions. [2020-11-29 19:56:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-29 19:56:46,100 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:46,101 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] [2020-11-29 19:56:46,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 19:56:46,101 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:46,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:46,102 INFO L82 PathProgramCache]: Analyzing trace with hash -978255182, now seen corresponding path program 1 times [2020-11-29 19:56:46,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:46,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314019358] [2020-11-29 19:56:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:46,181 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 19:56:46,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314019358] [2020-11-29 19:56:46,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:56:46,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:56:46,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72444308] [2020-11-29 19:56:46,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:56:46,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:46,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:56:46,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:56:46,184 INFO L87 Difference]: Start difference. First operand 133 states and 173 transitions. Second operand 6 states. [2020-11-29 19:56:46,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:46,430 INFO L93 Difference]: Finished difference Result 675 states and 895 transitions. [2020-11-29 19:56:46,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:56:46,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-11-29 19:56:46,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:46,437 INFO L225 Difference]: With dead ends: 675 [2020-11-29 19:56:46,437 INFO L226 Difference]: Without dead ends: 548 [2020-11-29 19:56:46,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:56:46,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-11-29 19:56:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 258. [2020-11-29 19:56:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-11-29 19:56:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 333 transitions. [2020-11-29 19:56:46,476 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 333 transitions. Word has length 49 [2020-11-29 19:56:46,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:46,477 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 333 transitions. [2020-11-29 19:56:46,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:56:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 333 transitions. [2020-11-29 19:56:46,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-29 19:56:46,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:46,479 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] [2020-11-29 19:56:46,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 19:56:46,480 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:46,480 INFO L82 PathProgramCache]: Analyzing trace with hash 216776629, now seen corresponding path program 1 times [2020-11-29 19:56:46,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:46,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622242100] [2020-11-29 19:56:46,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:46,617 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 19:56:46,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622242100] [2020-11-29 19:56:46,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440283654] [2020-11-29 19:56:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/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 19:56:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:56:46,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:56:46,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:56:46,926 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 19:56:46,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:56:46,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-29 19:56:46,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056752454] [2020-11-29 19:56:46,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:56:46,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:56:46,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:56:46,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:56:46,931 INFO L87 Difference]: Start difference. First operand 258 states and 333 transitions. Second operand 6 states. [2020-11-29 19:56:47,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:56:47,452 INFO L93 Difference]: Finished difference Result 786 states and 1030 transitions. [2020-11-29 19:56:47,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:56:47,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-11-29 19:56:47,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:56:47,460 INFO L225 Difference]: With dead ends: 786 [2020-11-29 19:56:47,461 INFO L226 Difference]: Without dead ends: 582 [2020-11-29 19:56:47,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:56:47,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-11-29 19:56:47,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 362. [2020-11-29 19:56:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-11-29 19:56:47,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 470 transitions. [2020-11-29 19:56:47,521 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 470 transitions. Word has length 50 [2020-11-29 19:56:47,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:56:47,522 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 470 transitions. [2020-11-29 19:56:47,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:56:47,523 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 470 transitions. [2020-11-29 19:56:47,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-29 19:56:47,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:56:47,525 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] [2020-11-29 19:56:47,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-29 19:56:47,742 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:56:47,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:56:47,742 INFO L82 PathProgramCache]: Analyzing trace with hash -691023976, now seen corresponding path program 2 times [2020-11-29 19:56:47,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:56:47,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144288438] [2020-11-29 19:56:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:56:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:56:47,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:56:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:56:47,943 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:56:48,022 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:56:48,022 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:56:48,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 19:56:48,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:56:48 BoogieIcfgContainer [2020-11-29 19:56:48,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:56:48,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:56:48,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:56:48,239 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:56:48,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:56:42" (3/4) ... [2020-11-29 19:56:48,243 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:56:48,484 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a5de8029-d5d8-4776-b3c5-4a2cdf0e8ee0/bin/uautomizer/witness.graphml [2020-11-29 19:56:48,484 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:56:48,486 INFO L168 Benchmark]: Toolchain (without parser) took 7723.29 ms. Allocated memory was 130.0 MB in the beginning and 195.0 MB in the end (delta: 65.0 MB). Free memory was 102.6 MB in the beginning and 146.2 MB in the end (delta: -43.6 MB). Peak memory consumption was 92.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:48,487 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 90.2 MB. Free memory was 48.0 MB in the beginning and 47.9 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:56:48,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.82 ms. Allocated memory is still 130.0 MB. Free memory was 102.6 MB in the beginning and 96.5 MB in the end (delta: 6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:48,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.42 ms. Allocated memory is still 130.0 MB. Free memory was 96.5 MB in the beginning and 93.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:48,488 INFO L168 Benchmark]: Boogie Preprocessor took 64.18 ms. Allocated memory is still 130.0 MB. Free memory was 93.3 MB in the beginning and 90.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:48,492 INFO L168 Benchmark]: RCFGBuilder took 1340.38 ms. Allocated memory is still 130.0 MB. Free memory was 90.2 MB in the beginning and 79.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:48,492 INFO L168 Benchmark]: TraceAbstraction took 5294.34 ms. Allocated memory was 130.0 MB in the beginning and 161.5 MB in the end (delta: 31.5 MB). Free memory was 79.1 MB in the beginning and 48.0 MB in the end (delta: 31.0 MB). Peak memory consumption was 62.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:48,493 INFO L168 Benchmark]: Witness Printer took 245.71 ms. Allocated memory was 161.5 MB in the beginning and 195.0 MB in the end (delta: 33.6 MB). Free memory was 48.0 MB in the beginning and 146.2 MB in the end (delta: -98.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:56:48,496 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 90.2 MB. Free memory was 48.0 MB in the beginning and 47.9 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 674.82 ms. Allocated memory is still 130.0 MB. Free memory was 102.6 MB in the beginning and 96.5 MB in the end (delta: 6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.42 ms. Allocated memory is still 130.0 MB. Free memory was 96.5 MB in the beginning and 93.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.18 ms. Allocated memory is still 130.0 MB. Free memory was 93.3 MB in the beginning and 90.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1340.38 ms. Allocated memory is still 130.0 MB. Free memory was 90.2 MB in the beginning and 79.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5294.34 ms. Allocated memory was 130.0 MB in the beginning and 161.5 MB in the end (delta: 31.5 MB). Free memory was 79.1 MB in the beginning and 48.0 MB in the end (delta: 31.0 MB). Peak memory consumption was 62.1 MB. Max. memory is 16.1 GB. * Witness Printer took 245.71 ms. Allocated memory was 161.5 MB in the beginning and 195.0 MB in the end (delta: 33.6 MB). Free memory was 48.0 MB in the beginning and 146.2 MB in the end (delta: -98.1 MB). Peak memory consumption was 6.7 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: [L157] int pumpRunning = 0; [L158] int systemActive = 1; [L336] int cleanupTimeShifts = 4; [L442] int waterLevel = 1; [L443] int methaneLevelCritical = 0; [L705] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L409] int retValue_acc ; [L410] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L416] tmp = valid_product() [L418] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L85] int splverifierCounter ; [L86] int tmp ; [L87] int tmp___0 ; [L88] int tmp___1 ; [L89] int tmp___2 ; [L92] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L94] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L96] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L102] tmp = __VERIFIER_nondet_int() [L104] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L460] COND TRUE waterLevel < 2 [L461] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L172] COND TRUE \read(systemActive) [L220] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L223] COND FALSE !(\read(pumpRunning)) [L194] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] COND TRUE ! pumpRunning [L317] int retValue_acc ; [L318] int tmp ; [L319] int tmp___0 ; [L522] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L525] COND FALSE !(waterLevel < 2) [L529] retValue_acc = 0 [L530] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L323] tmp = isHighWaterSensorDry() [L325] COND FALSE !(\read(tmp)) [L328] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L330] retValue_acc = tmp___0 [L331] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L199] tmp = isHighWaterLevel() [L201] COND TRUE \read(tmp) [L248] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L903] int tmp ; [L904] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L908] tmp = getWaterLevel() [L910] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L94] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L96] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L102] tmp = __VERIFIER_nondet_int() [L104] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L165] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L172] COND TRUE \read(systemActive) [L220] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L223] COND TRUE \read(pumpRunning) [L261] int retValue_acc ; [L481] int retValue_acc ; [L484] retValue_acc = methaneLevelCritical [L485] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L265] retValue_acc = isMethaneLevelCritical() [L267] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L225] tmp = isMethaneAlarm() [L227] COND FALSE !(\read(tmp)) [L194] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L197] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L903] int tmp ; [L904] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L908] tmp = getWaterLevel() [L910] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L94] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L96] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L102] tmp = __VERIFIER_nondet_int() [L104] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L172] COND TRUE \read(systemActive) [L220] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L223] COND TRUE \read(pumpRunning) [L261] int retValue_acc ; [L481] int retValue_acc ; [L484] retValue_acc = methaneLevelCritical [L485] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L265] retValue_acc = isMethaneLevelCritical() [L267] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L225] tmp = isMethaneAlarm() [L227] COND FALSE !(\read(tmp)) [L194] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L197] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L903] int tmp ; [L904] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L908] tmp = getWaterLevel() [L910] COND TRUE tmp == 0 [L272] int retValue_acc ; [L275] retValue_acc = pumpRunning [L276] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L912] tmp___0 = isPumpRunning() [L914] 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_product37.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, 114 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.9s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1166 SDtfs, 1704 SDslu, 1731 SDs, 0 SdLazy, 272 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=12, 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, 12 MinimizatonAttempts, 866 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 498 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 416 ConstructedInterpolants, 0 QuantifiedInterpolants, 30071 SizeOfPredicates, 4 NumberOfNonLiveVariables, 416 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 50/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...