./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD --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 8521353bcf4bae83665566564f0550ca2d5ed2f2d2c87d1236006cfbb2433fe4 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-28 23:54:12,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:54:12,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:54:12,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:54:12,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:54:12,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:54:12,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:54:12,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:54:12,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:54:12,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:54:12,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:54:12,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:54:12,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:54:12,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:54:12,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:54:12,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:54:12,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:54:12,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:54:12,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:54:12,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:54:12,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:54:12,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:54:12,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:54:12,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:54:12,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:54:12,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:54:12,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:54:12,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:54:12,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:54:12,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:54:12,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:54:12,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:54:12,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:54:12,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:54:12,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:54:12,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:54:12,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:54:12,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:54:12,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:54:12,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:54:12,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:54:12,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:54:12,505 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:54:12,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:54:12,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:54:12,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:54:12,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:54:12,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:54:12,510 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:54:12,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:54:12,511 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:54:12,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:54:12,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:54:12,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:54:12,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:54:12,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:54:12,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:54:12,514 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:54:12,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:54:12,515 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:54:12,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:54:12,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:54:12,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:54:12,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:54:12,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:54:12,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:54:12,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:54:12,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:54:12,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:54:12,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:54:12,520 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:54:12,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:54:12,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:54:12,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:54:12,521 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_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8521353bcf4bae83665566564f0550ca2d5ed2f2d2c87d1236006cfbb2433fe4 [2021-10-28 23:54:12,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:54:12,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:54:12,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:54:12,900 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:54:12,901 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:54:12,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2021-10-28 23:54:12,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/data/97dd4285f/7bc0e6736b9f4fdfa7424d2acdff410b/FLAG6cfb27537 [2021-10-28 23:54:13,700 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:54:13,701 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2021-10-28 23:54:13,733 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/data/97dd4285f/7bc0e6736b9f4fdfa7424d2acdff410b/FLAG6cfb27537 [2021-10-28 23:54:13,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/data/97dd4285f/7bc0e6736b9f4fdfa7424d2acdff410b [2021-10-28 23:54:13,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:54:13,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:54:13,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:54:13,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:54:13,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:54:13,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:13,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d7411bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:13, skipping insertion in model container [2021-10-28 23:54:13,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:54:13" (1/1) ... [2021-10-28 23:54:13,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:54:14,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:54:14,370 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_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c[6162,6175] [2021-10-28 23:54:14,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:54:14,611 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:54:14,667 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_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c[6162,6175] [2021-10-28 23:54:14,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:54:14,735 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:54:14,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:14 WrapperNode [2021-10-28 23:54:14,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:54:14,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:54:14,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:54:14,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:54:14,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:14" (1/1) ... [2021-10-28 23:54:14,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:14" (1/1) ... [2021-10-28 23:54:14,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:54:14,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:54:14,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:54:14,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:54:14,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:14" (1/1) ... [2021-10-28 23:54:14,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:14" (1/1) ... [2021-10-28 23:54:14,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:14" (1/1) ... [2021-10-28 23:54:14,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:14" (1/1) ... [2021-10-28 23:54:14,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:14" (1/1) ... [2021-10-28 23:54:14,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:14" (1/1) ... [2021-10-28 23:54:14,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:14" (1/1) ... [2021-10-28 23:54:14,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:54:14,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:54:14,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:54:14,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:54:14,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:14" (1/1) ... [2021-10-28 23:54:14,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:54:14,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:54:14,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:54:14,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:54:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:54:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:54:15,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:54:15,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:54:16,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:54:16,339 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2021-10-28 23:54:16,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:54:16 BoogieIcfgContainer [2021-10-28 23:54:16,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:54:16,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:54:16,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:54:16,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:54:16,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:54:13" (1/3) ... [2021-10-28 23:54:16,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db7da26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:54:16, skipping insertion in model container [2021-10-28 23:54:16,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:54:14" (2/3) ... [2021-10-28 23:54:16,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db7da26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:54:16, skipping insertion in model container [2021-10-28 23:54:16,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:54:16" (3/3) ... [2021-10-28 23:54:16,357 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2021-10-28 23:54:16,365 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:54:16,366 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 23:54:16,450 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:54:16,465 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 [2021-10-28 23:54:16,466 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 23:54:16,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 115 states have (on average 1.565217391304348) internal successors, (180), 118 states have internal predecessors, (180), 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) [2021-10-28 23:54:16,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:54:16,507 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:54:16,508 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:16,508 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:54:16,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:16,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1794729554, now seen corresponding path program 1 times [2021-10-28 23:54:16,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:16,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422533504] [2021-10-28 23:54:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:16,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:16,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:16,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422533504] [2021-10-28 23:54:16,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422533504] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:54:16,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:54:16,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:54:16,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744500159] [2021-10-28 23:54:16,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:54:16,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:16,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:54:16,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:54:16,931 INFO L87 Difference]: Start difference. First operand has 119 states, 115 states have (on average 1.565217391304348) internal successors, (180), 118 states have internal predecessors, (180), 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) [2021-10-28 23:54:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:16,995 INFO L93 Difference]: Finished difference Result 232 states and 353 transitions. [2021-10-28 23:54:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:54:16,997 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 [2021-10-28 23:54:16,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:54:17,016 INFO L225 Difference]: With dead ends: 232 [2021-10-28 23:54:17,017 INFO L226 Difference]: Without dead ends: 115 [2021-10-28 23:54:17,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:54:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-28 23:54:17,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-10-28 23:54:17,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 112 states have (on average 1.5) internal successors, (168), 114 states have internal predecessors, (168), 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) [2021-10-28 23:54:17,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2021-10-28 23:54:17,073 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 16 [2021-10-28 23:54:17,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:54:17,074 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2021-10-28 23:54:17,074 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) [2021-10-28 23:54:17,075 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2021-10-28 23:54:17,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:54:17,076 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:54:17,077 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:17,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:54:17,078 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:54:17,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:17,078 INFO L85 PathProgramCache]: Analyzing trace with hash 529368141, now seen corresponding path program 1 times [2021-10-28 23:54:17,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:17,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976830602] [2021-10-28 23:54:17,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:17,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:17,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:17,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976830602] [2021-10-28 23:54:17,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976830602] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:54:17,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:54:17,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:54:17,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744176022] [2021-10-28 23:54:17,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:54:17,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:17,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:54:17,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:54:17,264 INFO L87 Difference]: Start difference. First operand 115 states and 168 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) [2021-10-28 23:54:17,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:17,279 INFO L93 Difference]: Finished difference Result 115 states and 168 transitions. [2021-10-28 23:54:17,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:54:17,281 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 [2021-10-28 23:54:17,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:54:17,282 INFO L225 Difference]: With dead ends: 115 [2021-10-28 23:54:17,282 INFO L226 Difference]: Without dead ends: 49 [2021-10-28 23:54:17,284 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:54:17,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-28 23:54:17,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-28 23:54:17,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 48 states have internal predecessors, (71), 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) [2021-10-28 23:54:17,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2021-10-28 23:54:17,293 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 17 [2021-10-28 23:54:17,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:54:17,293 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2021-10-28 23:54:17,294 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) [2021-10-28 23:54:17,294 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2021-10-28 23:54:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:54:17,296 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:54:17,296 INFO L513 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] [2021-10-28 23:54:17,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:54:17,297 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:54:17,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:17,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2061312917, now seen corresponding path program 1 times [2021-10-28 23:54:17,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:17,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603106791] [2021-10-28 23:54:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:17,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:17,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:17,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603106791] [2021-10-28 23:54:17,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603106791] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:54:17,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:54:17,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:54:17,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658000814] [2021-10-28 23:54:17,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:54:17,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:17,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:54:17,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:54:17,435 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2021-10-28 23:54:17,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:17,495 INFO L93 Difference]: Finished difference Result 135 states and 201 transitions. [2021-10-28 23:54:17,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:54:17,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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 [2021-10-28 23:54:17,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:54:17,498 INFO L225 Difference]: With dead ends: 135 [2021-10-28 23:54:17,499 INFO L226 Difference]: Without dead ends: 92 [2021-10-28 23:54:17,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:54:17,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-28 23:54:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2021-10-28 23:54:17,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.5057471264367817) internal successors, (131), 87 states have internal predecessors, (131), 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) [2021-10-28 23:54:17,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 131 transitions. [2021-10-28 23:54:17,517 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 131 transitions. Word has length 22 [2021-10-28 23:54:17,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:54:17,517 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 131 transitions. [2021-10-28 23:54:17,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2021-10-28 23:54:17,518 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 131 transitions. [2021-10-28 23:54:17,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:54:17,520 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:54:17,520 INFO L513 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] [2021-10-28 23:54:17,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:54:17,521 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:54:17,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:17,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1499976397, now seen corresponding path program 1 times [2021-10-28 23:54:17,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:17,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387988664] [2021-10-28 23:54:17,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:17,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:17,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:17,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387988664] [2021-10-28 23:54:17,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387988664] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:54:17,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:54:17,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:54:17,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444679579] [2021-10-28 23:54:17,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:54:17,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:17,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:54:17,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:54:17,662 INFO L87 Difference]: Start difference. First operand 88 states and 131 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2021-10-28 23:54:17,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:17,748 INFO L93 Difference]: Finished difference Result 211 states and 318 transitions. [2021-10-28 23:54:17,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:54:17,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2021-10-28 23:54:17,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:54:17,753 INFO L225 Difference]: With dead ends: 211 [2021-10-28 23:54:17,755 INFO L226 Difference]: Without dead ends: 129 [2021-10-28 23:54:17,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:54:17,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-28 23:54:17,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2021-10-28 23:54:17,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.4682539682539681) internal successors, (185), 126 states have internal predecessors, (185), 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) [2021-10-28 23:54:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 185 transitions. [2021-10-28 23:54:17,794 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 185 transitions. Word has length 24 [2021-10-28 23:54:17,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:54:17,795 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 185 transitions. [2021-10-28 23:54:17,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2021-10-28 23:54:17,796 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 185 transitions. [2021-10-28 23:54:17,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:54:17,801 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:54:17,801 INFO L513 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] [2021-10-28 23:54:17,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:54:17,802 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:54:17,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:17,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1678878848, now seen corresponding path program 1 times [2021-10-28 23:54:17,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:17,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142002407] [2021-10-28 23:54:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:17,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:17,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:17,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142002407] [2021-10-28 23:54:17,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142002407] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:54:17,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:54:17,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:54:17,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897882356] [2021-10-28 23:54:17,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:54:17,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:17,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:54:17,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:54:17,970 INFO L87 Difference]: Start difference. First operand 127 states and 185 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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) [2021-10-28 23:54:18,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:18,093 INFO L93 Difference]: Finished difference Result 683 states and 1014 transitions. [2021-10-28 23:54:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:54:18,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2021-10-28 23:54:18,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:54:18,100 INFO L225 Difference]: With dead ends: 683 [2021-10-28 23:54:18,101 INFO L226 Difference]: Without dead ends: 562 [2021-10-28 23:54:18,104 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:54:18,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-28 23:54:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 238. [2021-10-28 23:54:18,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.4472573839662448) internal successors, (343), 237 states have internal predecessors, (343), 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) [2021-10-28 23:54:18,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 343 transitions. [2021-10-28 23:54:18,177 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 343 transitions. Word has length 25 [2021-10-28 23:54:18,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:54:18,178 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 343 transitions. [2021-10-28 23:54:18,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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) [2021-10-28 23:54:18,180 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 343 transitions. [2021-10-28 23:54:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:54:18,185 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:54:18,185 INFO L513 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] [2021-10-28 23:54:18,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:54:18,186 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:54:18,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:18,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1475071754, now seen corresponding path program 1 times [2021-10-28 23:54:18,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:18,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272334366] [2021-10-28 23:54:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:18,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:18,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:18,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272334366] [2021-10-28 23:54:18,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272334366] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:54:18,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:54:18,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:54:18,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685912936] [2021-10-28 23:54:18,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:54:18,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:18,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:54:18,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:54:18,332 INFO L87 Difference]: Start difference. First operand 238 states and 343 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-10-28 23:54:18,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:18,505 INFO L93 Difference]: Finished difference Result 684 states and 990 transitions. [2021-10-28 23:54:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:54:18,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2021-10-28 23:54:18,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:54:18,518 INFO L225 Difference]: With dead ends: 684 [2021-10-28 23:54:18,519 INFO L226 Difference]: Without dead ends: 682 [2021-10-28 23:54:18,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:54:18,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-10-28 23:54:18,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 238. [2021-10-28 23:54:18,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.4388185654008439) internal successors, (341), 237 states have internal predecessors, (341), 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) [2021-10-28 23:54:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 341 transitions. [2021-10-28 23:54:18,578 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 341 transitions. Word has length 26 [2021-10-28 23:54:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:54:18,579 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 341 transitions. [2021-10-28 23:54:18,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-10-28 23:54:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 341 transitions. [2021-10-28 23:54:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 23:54:18,605 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:54:18,605 INFO L513 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] [2021-10-28 23:54:18,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:54:18,606 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:54:18,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash 317568404, now seen corresponding path program 1 times [2021-10-28 23:54:18,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:18,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224778256] [2021-10-28 23:54:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:18,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:18,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:18,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224778256] [2021-10-28 23:54:18,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224778256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:54:18,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:54:18,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:54:18,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101547965] [2021-10-28 23:54:18,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:54:18,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:18,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:54:18,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:54:18,713 INFO L87 Difference]: Start difference. First operand 238 states and 341 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-10-28 23:54:18,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:18,814 INFO L93 Difference]: Finished difference Result 650 states and 916 transitions. [2021-10-28 23:54:18,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:54:18,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2021-10-28 23:54:18,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:54:18,822 INFO L225 Difference]: With dead ends: 650 [2021-10-28 23:54:18,822 INFO L226 Difference]: Without dead ends: 418 [2021-10-28 23:54:18,825 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:54:18,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-10-28 23:54:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 262. [2021-10-28 23:54:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.3984674329501916) internal successors, (365), 261 states have internal predecessors, (365), 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) [2021-10-28 23:54:18,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 365 transitions. [2021-10-28 23:54:18,855 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 365 transitions. Word has length 31 [2021-10-28 23:54:18,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:54:18,858 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 365 transitions. [2021-10-28 23:54:18,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-10-28 23:54:18,858 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 365 transitions. [2021-10-28 23:54:18,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 23:54:18,862 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:54:18,862 INFO L513 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] [2021-10-28 23:54:18,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:54:18,863 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:54:18,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:18,864 INFO L85 PathProgramCache]: Analyzing trace with hash -75458606, now seen corresponding path program 1 times [2021-10-28 23:54:18,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:18,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188761097] [2021-10-28 23:54:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:18,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:18,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:18,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188761097] [2021-10-28 23:54:18,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188761097] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:54:18,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:54:18,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:54:18,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940997602] [2021-10-28 23:54:18,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:54:18,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:54:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:54:18,958 INFO L87 Difference]: Start difference. First operand 262 states and 365 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-10-28 23:54:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:19,031 INFO L93 Difference]: Finished difference Result 638 states and 878 transitions. [2021-10-28 23:54:19,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:54:19,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2021-10-28 23:54:19,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:54:19,036 INFO L225 Difference]: With dead ends: 638 [2021-10-28 23:54:19,037 INFO L226 Difference]: Without dead ends: 382 [2021-10-28 23:54:19,038 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:54:19,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-10-28 23:54:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 278. [2021-10-28 23:54:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.3754512635379061) internal successors, (381), 277 states have internal predecessors, (381), 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) [2021-10-28 23:54:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 381 transitions. [2021-10-28 23:54:19,070 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 381 transitions. Word has length 31 [2021-10-28 23:54:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:54:19,071 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 381 transitions. [2021-10-28 23:54:19,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-10-28 23:54:19,071 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 381 transitions. [2021-10-28 23:54:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 23:54:19,072 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:54:19,072 INFO L513 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] [2021-10-28 23:54:19,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:54:19,073 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:54:19,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:19,074 INFO L85 PathProgramCache]: Analyzing trace with hash 182706832, now seen corresponding path program 1 times [2021-10-28 23:54:19,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:19,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451020155] [2021-10-28 23:54:19,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:19,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:54:19,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:54:19,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:54:19,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451020155] [2021-10-28 23:54:19,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451020155] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:54:19,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:54:19,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:54:19,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357800101] [2021-10-28 23:54:19,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:54:19,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:54:19,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:54:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:54:19,143 INFO L87 Difference]: Start difference. First operand 278 states and 381 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-10-28 23:54:19,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:19,236 INFO L93 Difference]: Finished difference Result 654 states and 890 transitions. [2021-10-28 23:54:19,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:54:19,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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 31 [2021-10-28 23:54:19,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:54:19,240 INFO L225 Difference]: With dead ends: 654 [2021-10-28 23:54:19,240 INFO L226 Difference]: Without dead ends: 382 [2021-10-28 23:54:19,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:54:19,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-10-28 23:54:19,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-10-28 23:54:19,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.330708661417323) internal successors, (507), 381 states have internal predecessors, (507), 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) [2021-10-28 23:54:19,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 507 transitions. [2021-10-28 23:54:19,292 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 507 transitions. Word has length 31 [2021-10-28 23:54:19,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:54:19,292 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 507 transitions. [2021-10-28 23:54:19,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-10-28 23:54:19,294 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 507 transitions. [2021-10-28 23:54:19,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:54:19,295 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:54:19,295 INFO L513 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] [2021-10-28 23:54:19,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:54:19,296 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:54:19,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:54:19,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1930053038, now seen corresponding path program 1 times [2021-10-28 23:54:19,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:54:19,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502857162] [2021-10-28 23:54:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:54:19,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:54:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:19,415 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:54:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:54:19,575 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:54:19,575 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:54:19,577 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:54:19,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:54:19,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:54:19,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:54:19,585 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:54:19,590 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:54:19,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:54:19 BoogieIcfgContainer [2021-10-28 23:54:19,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:54:19,779 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:54:19,779 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:54:19,780 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:54:19,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:54:16" (3/4) ... [2021-10-28 23:54:19,783 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:54:19,891 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:54:19,891 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:54:19,893 INFO L168 Benchmark]: Toolchain (without parser) took 5983.29 ms. Allocated memory was 100.7 MB in the beginning and 213.9 MB in the end (delta: 113.2 MB). Free memory was 61.4 MB in the beginning and 127.7 MB in the end (delta: -66.3 MB). Peak memory consumption was 47.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:19,894 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 100.7 MB. Free memory is still 78.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:54:19,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 807.14 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 61.1 MB in the beginning and 117.5 MB in the end (delta: -56.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:19,895 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.78 ms. Allocated memory is still 146.8 MB. Free memory was 117.5 MB in the beginning and 113.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:19,895 INFO L168 Benchmark]: Boogie Preprocessor took 107.55 ms. Allocated memory is still 146.8 MB. Free memory was 113.9 MB in the beginning and 111.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:19,896 INFO L168 Benchmark]: RCFGBuilder took 1398.40 ms. Allocated memory is still 146.8 MB. Free memory was 111.2 MB in the beginning and 117.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:19,897 INFO L168 Benchmark]: TraceAbstraction took 3432.48 ms. Allocated memory was 146.8 MB in the beginning and 213.9 MB in the end (delta: 67.1 MB). Free memory was 116.6 MB in the beginning and 141.3 MB in the end (delta: -24.6 MB). Peak memory consumption was 42.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:19,897 INFO L168 Benchmark]: Witness Printer took 112.22 ms. Allocated memory is still 213.9 MB. Free memory was 141.3 MB in the beginning and 127.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:19,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 100.7 MB. Free memory is still 78.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 807.14 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 61.1 MB in the beginning and 117.5 MB in the end (delta: -56.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.78 ms. Allocated memory is still 146.8 MB. Free memory was 117.5 MB in the beginning and 113.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 107.55 ms. Allocated memory is still 146.8 MB. Free memory was 113.9 MB in the beginning and 111.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1398.40 ms. Allocated memory is still 146.8 MB. Free memory was 111.2 MB in the beginning and 117.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3432.48 ms. Allocated memory was 146.8 MB in the beginning and 213.9 MB in the end (delta: 67.1 MB). Free memory was 116.6 MB in the beginning and 141.3 MB in the end (delta: -24.6 MB). Peak memory consumption was 42.2 MB. Max. memory is 16.1 GB. * Witness Printer took 112.22 ms. Allocated memory is still 213.9 MB. Free memory was 141.3 MB in the beginning and 127.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 393]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L168] int pumpRunning = 0; [L169] int systemActive = 1; [L468] int cleanupTimeShifts = 4; [L762] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L544] int retValue_acc ; [L545] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L985] int retValue_acc ; [L988] retValue_acc = 1 [L989] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L551] tmp = valid_product() [L553] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L400] int splverifierCounter ; [L401] int tmp ; [L402] int tmp___0 ; [L403] int tmp___1 ; [L404] int tmp___2 ; [L407] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L409] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L411] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L417] tmp = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L76] COND TRUE waterLevel < 2 [L77] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L427] tmp___0 = __VERIFIER_nondet_int() [L429] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L88] COND FALSE !(\read(methaneLevelCritical)) [L91] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L437] tmp___2 = __VERIFIER_nondet_int() [L439] COND TRUE \read(tmp___2) [L384] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L176] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L183] COND TRUE \read(systemActive) [L231] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L234] COND FALSE !(\read(pumpRunning)) [L205] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L208] COND TRUE ! pumpRunning [L328] int retValue_acc ; [L329] int tmp ; [L330] int tmp___0 ; [L138] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L141] COND FALSE !(waterLevel < 2) [L145] retValue_acc = 0 [L146] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L334] tmp = isHighWaterSensorDry() [L336] COND FALSE !(\read(tmp)) [L339] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L341] retValue_acc = tmp___0 [L342] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L210] tmp = isHighWaterLevel() [L212] COND TRUE \read(tmp) [L259] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L568] int tmp ; [L569] int tmp___0 ; [L97] int retValue_acc ; [L100] retValue_acc = methaneLevelCritical [L101] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L573] tmp = isMethaneLevelCritical() [L575] COND TRUE \read(tmp) [L283] int retValue_acc ; [L286] retValue_acc = pumpRunning [L287] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L577] tmp___0 = isPumpRunning() [L579] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L393] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 393]: 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: 393]: 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, 119 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 877 SDtfs, 978 SDslu, 1163 SDs, 0 SdLazy, 147 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=382occurred in iteration=9, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 1034 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 394 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:54:19,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e2702-67d1-4001-82cc-a6c3bcfe808e/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...