./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be --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 190527f0b5c755657048457e241e1db06174c0bd15c9c37dddb3c55b0e7d73ce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.1-dev-e943c26 [2021-10-21 20:26:07,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:26:07,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:26:07,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:26:07,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:26:07,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:26:07,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:26:07,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:26:07,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:26:07,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:26:07,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:26:07,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:26:07,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:26:07,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:26:07,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:26:07,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:26:07,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:26:07,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:26:07,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:26:07,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:26:07,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:26:07,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:26:07,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:26:07,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:26:07,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:26:07,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:26:07,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:26:07,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:26:07,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:26:07,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:26:07,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:26:07,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:26:07,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:26:07,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:26:07,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:26:07,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:26:07,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:26:07,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:26:07,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:26:07,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:26:07,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:26:07,139 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:26:07,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:26:07,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:26:07,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:26:07,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:26:07,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:26:07,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:26:07,167 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:26:07,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:26:07,167 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:26:07,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:26:07,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:26:07,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:26:07,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:26:07,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:26:07,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:26:07,169 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:26:07,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:26:07,169 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:26:07,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:26:07,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:26:07,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:26:07,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:26:07,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:26:07,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:26:07,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:26:07,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:26:07,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:26:07,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:26:07,171 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:26:07,172 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:26:07,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:26:07,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:26:07,172 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_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 190527f0b5c755657048457e241e1db06174c0bd15c9c37dddb3c55b0e7d73ce [2021-10-21 20:26:07,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:26:07,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:26:07,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:26:07,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:26:07,433 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:26:07,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2021-10-21 20:26:07,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/data/7d8d20e93/ca5d96b027f0458dbc9b0006db1b513d/FLAG4996f12d8 [2021-10-21 20:26:08,071 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:26:08,071 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2021-10-21 20:26:08,098 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/data/7d8d20e93/ca5d96b027f0458dbc9b0006db1b513d/FLAG4996f12d8 [2021-10-21 20:26:08,349 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/data/7d8d20e93/ca5d96b027f0458dbc9b0006db1b513d [2021-10-21 20:26:08,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:26:08,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:26:08,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:26:08,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:26:08,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:26:08,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:26:08" (1/1) ... [2021-10-21 20:26:08,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb41ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:08, skipping insertion in model container [2021-10-21 20:26:08,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:26:08" (1/1) ... [2021-10-21 20:26:08,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:26:08,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:26:08,713 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c[17943,17956] [2021-10-21 20:26:08,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:26:08,743 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:26:08,827 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c[17943,17956] [2021-10-21 20:26:08,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:26:08,853 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:26:08,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:08 WrapperNode [2021-10-21 20:26:08,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:26:08,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:26:08,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:26:08,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:26:08,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:08" (1/1) ... [2021-10-21 20:26:08,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:08" (1/1) ... [2021-10-21 20:26:08,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:26:08,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:26:08,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:26:08,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:26:08,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:08" (1/1) ... [2021-10-21 20:26:08,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:08" (1/1) ... [2021-10-21 20:26:08,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:08" (1/1) ... [2021-10-21 20:26:08,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:08" (1/1) ... [2021-10-21 20:26:08,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:08" (1/1) ... [2021-10-21 20:26:08,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:08" (1/1) ... [2021-10-21 20:26:08,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:08" (1/1) ... [2021-10-21 20:26:08,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:26:08,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:26:08,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:26:08,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:26:08,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:08" (1/1) ... [2021-10-21 20:26:09,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:26:09,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:09,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:26:09,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:26:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:26:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:26:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:26:09,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:26:09,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:26:09,975 INFO L299 CfgBuilder]: Removed 116 assume(true) statements. [2021-10-21 20:26:09,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:26:09 BoogieIcfgContainer [2021-10-21 20:26:09,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:26:09,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:26:09,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:26:09,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:26:09,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:26:08" (1/3) ... [2021-10-21 20:26:09,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2129c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:26:09, skipping insertion in model container [2021-10-21 20:26:09,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:08" (2/3) ... [2021-10-21 20:26:09,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2129c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:26:09, skipping insertion in model container [2021-10-21 20:26:09,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:26:09" (3/3) ... [2021-10-21 20:26:09,990 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2021-10-21 20:26:09,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:26:09,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-21 20:26:10,056 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:26:10,061 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:26:10,061 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 20:26:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 86 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:10,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 20:26:10,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:10,080 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:10,081 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:10,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:10,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1594902839, now seen corresponding path program 1 times [2021-10-21 20:26:10,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:10,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197417465] [2021-10-21 20:26:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:10,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:10,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:10,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197417465] [2021-10-21 20:26:10,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197417465] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:10,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:10,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:26:10,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468794564] [2021-10-21 20:26:10,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:26:10,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:10,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:26:10,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:26:10,354 INFO L87 Difference]: Start difference. First operand has 87 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 86 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:10,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:10,393 INFO L93 Difference]: Finished difference Result 168 states and 251 transitions. [2021-10-21 20:26:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:26:10,395 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-21 20:26:10,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:10,406 INFO L225 Difference]: With dead ends: 168 [2021-10-21 20:26:10,407 INFO L226 Difference]: Without dead ends: 83 [2021-10-21 20:26:10,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:26:10,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-21 20:26:10,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-10-21 20:26:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 80 states have (on average 1.4625) internal successors, (117), 82 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:10,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2021-10-21 20:26:10,462 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2021-10-21 20:26:10,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:10,463 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2021-10-21 20:26:10,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:10,464 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2021-10-21 20:26:10,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:26:10,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:10,466 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:10,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:26:10,466 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:10,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:10,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1653307560, now seen corresponding path program 1 times [2021-10-21 20:26:10,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:10,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279808242] [2021-10-21 20:26:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:10,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:10,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:10,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279808242] [2021-10-21 20:26:10,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279808242] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:10,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:10,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:26:10,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985855718] [2021-10-21 20:26:10,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:26:10,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:10,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:26:10,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:26:10,640 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:10,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:10,650 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2021-10-21 20:26:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:26:10,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-21 20:26:10,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:10,654 INFO L225 Difference]: With dead ends: 83 [2021-10-21 20:26:10,654 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 20:26:10,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:26:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 20:26:10,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-21 20:26:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 36 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2021-10-21 20:26:10,667 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2021-10-21 20:26:10,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:10,668 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2021-10-21 20:26:10,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2021-10-21 20:26:10,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:26:10,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:10,671 INFO L512 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] [2021-10-21 20:26:10,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:26:10,672 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:10,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:10,674 INFO L82 PathProgramCache]: Analyzing trace with hash 533078269, now seen corresponding path program 1 times [2021-10-21 20:26:10,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:10,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110748856] [2021-10-21 20:26:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:10,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:10,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:10,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110748856] [2021-10-21 20:26:10,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110748856] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:10,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:10,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:26:10,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630343507] [2021-10-21 20:26:10,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:26:10,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:10,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:26:10,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:26:10,793 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:10,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:10,849 INFO L93 Difference]: Finished difference Result 68 states and 98 transitions. [2021-10-21 20:26:10,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:26:10,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 20:26:10,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:10,854 INFO L225 Difference]: With dead ends: 68 [2021-10-21 20:26:10,854 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 20:26:10,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:26:10,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 20:26:10,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-21 20:26:10,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2021-10-21 20:26:10,868 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 22 [2021-10-21 20:26:10,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:10,868 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2021-10-21 20:26:10,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2021-10-21 20:26:10,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 20:26:10,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:10,870 INFO L512 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] [2021-10-21 20:26:10,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:26:10,871 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:10,872 INFO L82 PathProgramCache]: Analyzing trace with hash 545820985, now seen corresponding path program 1 times [2021-10-21 20:26:10,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:10,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025280273] [2021-10-21 20:26:10,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:10,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:10,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:10,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:10,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025280273] [2021-10-21 20:26:10,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025280273] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:10,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:10,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:26:10,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616156996] [2021-10-21 20:26:10,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:26:10,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:10,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:26:10,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:26:10,986 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:11,024 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2021-10-21 20:26:11,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:26:11,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-21 20:26:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:11,027 INFO L225 Difference]: With dead ends: 89 [2021-10-21 20:26:11,028 INFO L226 Difference]: Without dead ends: 58 [2021-10-21 20:26:11,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:26:11,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-21 20:26:11,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-21 20:26:11,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 55 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2021-10-21 20:26:11,041 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 23 [2021-10-21 20:26:11,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:11,042 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2021-10-21 20:26:11,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2021-10-21 20:26:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 20:26:11,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:11,045 INFO L512 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] [2021-10-21 20:26:11,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:26:11,045 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:11,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:11,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2110814541, now seen corresponding path program 1 times [2021-10-21 20:26:11,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:11,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761518104] [2021-10-21 20:26:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:11,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:11,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:11,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761518104] [2021-10-21 20:26:11,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761518104] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:11,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:11,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:26:11,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339498666] [2021-10-21 20:26:11,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:26:11,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:11,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:26:11,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:26:11,177 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:11,280 INFO L93 Difference]: Finished difference Result 203 states and 292 transitions. [2021-10-21 20:26:11,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:26:11,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-21 20:26:11,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:11,283 INFO L225 Difference]: With dead ends: 203 [2021-10-21 20:26:11,283 INFO L226 Difference]: Without dead ends: 153 [2021-10-21 20:26:11,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:26:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-21 20:26:11,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 98. [2021-10-21 20:26:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.3814432989690721) internal successors, (134), 97 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 134 transitions. [2021-10-21 20:26:11,299 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 134 transitions. Word has length 29 [2021-10-21 20:26:11,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:11,300 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 134 transitions. [2021-10-21 20:26:11,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 134 transitions. [2021-10-21 20:26:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 20:26:11,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:11,301 INFO L512 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] [2021-10-21 20:26:11,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 20:26:11,302 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:11,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:11,302 INFO L82 PathProgramCache]: Analyzing trace with hash 244930959, now seen corresponding path program 1 times [2021-10-21 20:26:11,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:11,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017932304] [2021-10-21 20:26:11,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:11,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:11,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:11,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017932304] [2021-10-21 20:26:11,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017932304] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:11,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:11,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:26:11,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944838827] [2021-10-21 20:26:11,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:26:11,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:11,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:26:11,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:26:11,356 INFO L87 Difference]: Start difference. First operand 98 states and 134 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:11,462 INFO L93 Difference]: Finished difference Result 196 states and 275 transitions. [2021-10-21 20:26:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:26:11,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-21 20:26:11,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:11,464 INFO L225 Difference]: With dead ends: 196 [2021-10-21 20:26:11,464 INFO L226 Difference]: Without dead ends: 146 [2021-10-21 20:26:11,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:26:11,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-21 20:26:11,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2021-10-21 20:26:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.3873239436619718) internal successors, (197), 142 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 197 transitions. [2021-10-21 20:26:11,482 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 197 transitions. Word has length 30 [2021-10-21 20:26:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:11,483 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 197 transitions. [2021-10-21 20:26:11,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,483 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 197 transitions. [2021-10-21 20:26:11,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 20:26:11,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:11,484 INFO L512 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] [2021-10-21 20:26:11,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:26:11,485 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:11,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:11,486 INFO L82 PathProgramCache]: Analyzing trace with hash 503096397, now seen corresponding path program 1 times [2021-10-21 20:26:11,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:11,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449418752] [2021-10-21 20:26:11,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:11,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:11,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:11,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449418752] [2021-10-21 20:26:11,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449418752] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:11,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:11,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:26:11,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645196893] [2021-10-21 20:26:11,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:26:11,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:26:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:26:11,552 INFO L87 Difference]: Start difference. First operand 143 states and 197 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:11,590 INFO L93 Difference]: Finished difference Result 382 states and 537 transitions. [2021-10-21 20:26:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:26:11,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-21 20:26:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:11,593 INFO L225 Difference]: With dead ends: 382 [2021-10-21 20:26:11,593 INFO L226 Difference]: Without dead ends: 286 [2021-10-21 20:26:11,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:26:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-10-21 20:26:11,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 143. [2021-10-21 20:26:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.380281690140845) internal successors, (196), 142 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 196 transitions. [2021-10-21 20:26:11,613 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 196 transitions. Word has length 30 [2021-10-21 20:26:11,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:11,613 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 196 transitions. [2021-10-21 20:26:11,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,614 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 196 transitions. [2021-10-21 20:26:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 20:26:11,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:11,615 INFO L512 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] [2021-10-21 20:26:11,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 20:26:11,616 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:11,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:11,616 INFO L82 PathProgramCache]: Analyzing trace with hash 110069387, now seen corresponding path program 1 times [2021-10-21 20:26:11,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:11,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571199326] [2021-10-21 20:26:11,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:11,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:11,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:11,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571199326] [2021-10-21 20:26:11,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571199326] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:11,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:11,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:26:11,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373167021] [2021-10-21 20:26:11,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:26:11,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:11,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:26:11,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:26:11,671 INFO L87 Difference]: Start difference. First operand 143 states and 196 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:11,728 INFO L93 Difference]: Finished difference Result 413 states and 575 transitions. [2021-10-21 20:26:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:26:11,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-21 20:26:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:11,730 INFO L225 Difference]: With dead ends: 413 [2021-10-21 20:26:11,730 INFO L226 Difference]: Without dead ends: 276 [2021-10-21 20:26:11,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:26:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-21 20:26:11,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 149. [2021-10-21 20:26:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3581081081081081) internal successors, (201), 148 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 201 transitions. [2021-10-21 20:26:11,755 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 201 transitions. Word has length 30 [2021-10-21 20:26:11,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:11,756 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 201 transitions. [2021-10-21 20:26:11,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,756 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 201 transitions. [2021-10-21 20:26:11,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 20:26:11,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:11,759 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:11,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 20:26:11,760 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:11,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:11,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1480480129, now seen corresponding path program 1 times [2021-10-21 20:26:11,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:11,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279356289] [2021-10-21 20:26:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:11,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:11,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:11,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279356289] [2021-10-21 20:26:11,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279356289] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:11,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:11,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:26:11,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091625363] [2021-10-21 20:26:11,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:26:11,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:11,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:26:11,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:26:11,828 INFO L87 Difference]: Start difference. First operand 149 states and 201 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:11,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:11,956 INFO L93 Difference]: Finished difference Result 773 states and 1048 transitions. [2021-10-21 20:26:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:26:11,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-21 20:26:11,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:11,963 INFO L225 Difference]: With dead ends: 773 [2021-10-21 20:26:11,963 INFO L226 Difference]: Without dead ends: 630 [2021-10-21 20:26:11,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 41.4ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:26:11,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-10-21 20:26:12,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 280. [2021-10-21 20:26:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.3369175627240144) internal successors, (373), 279 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:12,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 373 transitions. [2021-10-21 20:26:12,012 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 373 transitions. Word has length 33 [2021-10-21 20:26:12,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:12,013 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 373 transitions. [2021-10-21 20:26:12,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 373 transitions. [2021-10-21 20:26:12,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 20:26:12,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:12,021 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:12,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 20:26:12,022 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:12,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:12,023 INFO L82 PathProgramCache]: Analyzing trace with hash 294527233, now seen corresponding path program 1 times [2021-10-21 20:26:12,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:12,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557880080] [2021-10-21 20:26:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:12,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:12,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:12,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557880080] [2021-10-21 20:26:12,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557880080] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:12,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:12,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:26:12,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454244110] [2021-10-21 20:26:12,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:26:12,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:12,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:26:12,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:26:12,113 INFO L87 Difference]: Start difference. First operand 280 states and 373 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:12,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:12,302 INFO L93 Difference]: Finished difference Result 580 states and 779 transitions. [2021-10-21 20:26:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:26:12,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-21 20:26:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:12,306 INFO L225 Difference]: With dead ends: 580 [2021-10-21 20:26:12,307 INFO L226 Difference]: Without dead ends: 394 [2021-10-21 20:26:12,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:26:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-10-21 20:26:12,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 274. [2021-10-21 20:26:12,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.3223443223443223) internal successors, (361), 273 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:12,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 361 transitions. [2021-10-21 20:26:12,353 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 361 transitions. Word has length 33 [2021-10-21 20:26:12,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:12,353 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 361 transitions. [2021-10-21 20:26:12,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:12,354 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 361 transitions. [2021-10-21 20:26:12,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-21 20:26:12,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:12,355 INFO L512 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] [2021-10-21 20:26:12,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 20:26:12,356 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:12,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1559974996, now seen corresponding path program 1 times [2021-10-21 20:26:12,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:12,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201686821] [2021-10-21 20:26:12,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:12,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 20:26:12,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:12,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201686821] [2021-10-21 20:26:12,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201686821] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:12,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:12,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:26:12,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950549317] [2021-10-21 20:26:12,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:26:12,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:12,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:26:12,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:26:12,428 INFO L87 Difference]: Start difference. First operand 274 states and 361 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:12,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:12,496 INFO L93 Difference]: Finished difference Result 618 states and 817 transitions. [2021-10-21 20:26:12,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:26:12,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-21 20:26:12,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:12,499 INFO L225 Difference]: With dead ends: 618 [2021-10-21 20:26:12,499 INFO L226 Difference]: Without dead ends: 350 [2021-10-21 20:26:12,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:26:12,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-10-21 20:26:12,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 274. [2021-10-21 20:26:12,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.3076923076923077) internal successors, (357), 273 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:12,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 357 transitions. [2021-10-21 20:26:12,535 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 357 transitions. Word has length 47 [2021-10-21 20:26:12,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:12,535 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 357 transitions. [2021-10-21 20:26:12,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 357 transitions. [2021-10-21 20:26:12,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-21 20:26:12,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:12,537 INFO L512 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] [2021-10-21 20:26:12,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 20:26:12,537 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:12,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:12,538 INFO L82 PathProgramCache]: Analyzing trace with hash -2069448086, now seen corresponding path program 1 times [2021-10-21 20:26:12,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:12,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753778336] [2021-10-21 20:26:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:12,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 20:26:12,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:12,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753778336] [2021-10-21 20:26:12,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753778336] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:12,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:12,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:26:12,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57092036] [2021-10-21 20:26:12,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:26:12,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:12,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:26:12,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:26:12,613 INFO L87 Difference]: Start difference. First operand 274 states and 357 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:12,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:12,672 INFO L93 Difference]: Finished difference Result 532 states and 697 transitions. [2021-10-21 20:26:12,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:26:12,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-21 20:26:12,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:12,674 INFO L225 Difference]: With dead ends: 532 [2021-10-21 20:26:12,674 INFO L226 Difference]: Without dead ends: 264 [2021-10-21 20:26:12,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:26:12,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-10-21 20:26:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 220. [2021-10-21 20:26:12,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.3059360730593608) internal successors, (286), 219 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 286 transitions. [2021-10-21 20:26:12,708 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 286 transitions. Word has length 47 [2021-10-21 20:26:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:12,709 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 286 transitions. [2021-10-21 20:26:12,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 286 transitions. [2021-10-21 20:26:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-21 20:26:12,711 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:12,711 INFO L512 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] [2021-10-21 20:26:12,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-21 20:26:12,712 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:12,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:12,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1874975382, now seen corresponding path program 1 times [2021-10-21 20:26:12,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:12,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479297416] [2021-10-21 20:26:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:12,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:12,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:12,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479297416] [2021-10-21 20:26:12,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479297416] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:26:12,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196985741] [2021-10-21 20:26:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:12,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:12,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:12,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:26:12,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:26:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:12,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:26:12,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:26:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:13,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196985741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:26:13,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:26:13,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-21 20:26:13,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71009850] [2021-10-21 20:26:13,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:26:13,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:13,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:26:13,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:26:13,134 INFO L87 Difference]: Start difference. First operand 220 states and 286 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:13,366 INFO L93 Difference]: Finished difference Result 635 states and 843 transitions. [2021-10-21 20:26:13,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:26:13,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-21 20:26:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:13,370 INFO L225 Difference]: With dead ends: 635 [2021-10-21 20:26:13,370 INFO L226 Difference]: Without dead ends: 467 [2021-10-21 20:26:13,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:26:13,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-10-21 20:26:13,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 302. [2021-10-21 20:26:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.3156146179401993) internal successors, (396), 301 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 396 transitions. [2021-10-21 20:26:13,409 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 396 transitions. Word has length 48 [2021-10-21 20:26:13,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:13,410 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 396 transitions. [2021-10-21 20:26:13,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:13,410 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 396 transitions. [2021-10-21 20:26:13,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-21 20:26:13,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:13,411 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:13,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:26:13,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-21 20:26:13,628 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:13,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:13,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1478909471, now seen corresponding path program 2 times [2021-10-21 20:26:13,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:13,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365077494] [2021-10-21 20:26:13,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:13,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:26:13,700 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:26:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:26:13,823 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:26:13,823 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:26:13,825 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:26:13,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:26:13,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:26:13,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-21 20:26:13,835 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:26:14,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:26:14 BoogieIcfgContainer [2021-10-21 20:26:14,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:26:14,001 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:26:14,001 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:26:14,001 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:26:14,002 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:26:09" (3/4) ... [2021-10-21 20:26:14,005 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 20:26:14,144 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:26:14,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:26:14,146 INFO L168 Benchmark]: Toolchain (without parser) took 5792.21 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 61.9 MB in the beginning and 89.8 MB in the end (delta: -27.9 MB). Peak memory consumption was 73.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:14,146 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 94.4 MB. Free memory was 51.8 MB in the beginning and 51.7 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:26:14,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 500.47 ms. Allocated memory is still 94.4 MB. Free memory was 61.7 MB in the beginning and 63.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:14,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.00 ms. Allocated memory is still 94.4 MB. Free memory was 63.6 MB in the beginning and 60.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:14,148 INFO L168 Benchmark]: Boogie Preprocessor took 52.48 ms. Allocated memory is still 94.4 MB. Free memory was 60.3 MB in the beginning and 58.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:26:14,148 INFO L168 Benchmark]: RCFGBuilder took 985.72 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 58.2 MB in the beginning and 73.1 MB in the end (delta: -14.9 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:14,151 INFO L168 Benchmark]: TraceAbstraction took 4019.83 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 72.5 MB in the beginning and 38.2 MB in the end (delta: 34.3 MB). Peak memory consumption was 57.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:14,151 INFO L168 Benchmark]: Witness Printer took 143.51 ms. Allocated memory is still 136.3 MB. Free memory was 38.2 MB in the beginning and 89.8 MB in the end (delta: -51.6 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:14,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 94.4 MB. Free memory was 51.8 MB in the beginning and 51.7 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 500.47 ms. Allocated memory is still 94.4 MB. Free memory was 61.7 MB in the beginning and 63.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.00 ms. Allocated memory is still 94.4 MB. Free memory was 63.6 MB in the beginning and 60.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.48 ms. Allocated memory is still 94.4 MB. Free memory was 60.3 MB in the beginning and 58.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 985.72 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 58.2 MB in the beginning and 73.1 MB in the end (delta: -14.9 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4019.83 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 72.5 MB in the beginning and 38.2 MB in the end (delta: 34.3 MB). Peak memory consumption was 57.4 MB. Max. memory is 16.1 GB. * Witness Printer took 143.51 ms. Allocated memory is still 136.3 MB. Free memory was 38.2 MB in the beginning and 89.8 MB in the end (delta: -51.6 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 934]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L583] int cleanupTimeShifts = 4; [L752] int pumpRunning = 0; [L753] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L659] int retValue_acc ; [L660] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L666] tmp = valid_product() [L668] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L684] int splverifierCounter ; [L685] int tmp ; [L686] int tmp___0 ; [L687] int tmp___1 ; [L688] int tmp___2 ; [L691] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L693] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L695] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L701] tmp = __VERIFIER_nondet_int() [L703] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L711] tmp___0 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L721] tmp___2 = __VERIFIER_nondet_int() [L723] COND TRUE \read(tmp___2) [L925] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L759] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L766] COND TRUE \read(systemActive) [L788] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L791] COND TRUE ! pumpRunning [L903] int retValue_acc ; [L904] int tmp ; [L905] int tmp___0 ; [L137] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L909] tmp = isHighWaterSensorDry() [L911] COND FALSE !(\read(tmp)) [L914] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L916] retValue_acc = tmp___0 [L917] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L793] tmp = isHighWaterLevel() [L795] COND TRUE \read(tmp) [L822] int tmp ; [L847] int retValue_acc ; [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L851] retValue_acc = isMethaneLevelCritical() [L853] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L826] tmp = isMethaneAlarm() [L828] COND FALSE !(\read(tmp)) [L816] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L558] int tmp ; [L559] int tmp___0 ; [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L563] tmp = getWaterLevel() [L565] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L693] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L695] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L701] tmp = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L711] tmp___0 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L721] tmp___2 = __VERIFIER_nondet_int() [L723] COND TRUE \read(tmp___2) [L925] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L759] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L766] COND TRUE \read(systemActive) [L788] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L791] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L558] int tmp ; [L559] int tmp___0 ; [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L563] tmp = getWaterLevel() [L565] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L693] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L695] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L701] tmp = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L711] tmp___0 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L721] tmp___2 = __VERIFIER_nondet_int() [L723] COND TRUE \read(tmp___2) [L925] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L759] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L766] COND TRUE \read(systemActive) [L788] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L791] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L558] int tmp ; [L559] int tmp___0 ; [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L563] tmp = getWaterLevel() [L565] COND TRUE tmp == 0 [L858] int retValue_acc ; [L861] retValue_acc = pumpRunning [L862] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L567] tmp___0 = isPumpRunning() [L569] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L934] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 934]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 934]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3778.6ms, OverallIterations: 14, TraceHistogramMax: 3, EmptinessCheckTime: 34.3ms, AutomataDifference: 1229.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1044 SDtfs, 1414 SDslu, 1602 SDs, 0 SdLazy, 228 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 404.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 260.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=302occurred in iteration=13, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 344.7ms AutomataMinimizationTime, 13 MinimizatonAttempts, 1085 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 93.5ms SsaConstructionTime, 542.7ms SatisfiabilityAnalysisTime, 854.8ms InterpolantComputationTime, 516 NumberOfCodeBlocks, 516 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 439 ConstructedInterpolants, 0 QuantifiedInterpolants, 769 SizeOfPredicates, 3 NumberOfNonLiveVariables, 417 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 50/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-21 20:26:14,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c959913-b7aa-4040-ae01-6349eba23e25/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...