./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN --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 90a76a2882b85be994db917b0e3084e326cc29272a09018948be7f2d57c03e00 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:50:28,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:50:28,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:50:28,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:50:28,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:50:28,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:50:28,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:50:28,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:50:28,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:50:28,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:50:28,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:50:28,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:50:28,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:50:28,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:50:28,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:50:28,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:50:28,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:50:28,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:50:28,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:50:28,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:50:28,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:50:28,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:50:28,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:50:28,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:50:28,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:50:28,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:50:28,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:50:28,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:50:28,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:50:28,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:50:28,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:50:28,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:50:28,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:50:28,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:50:28,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:50:28,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:50:28,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:50:28,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:50:28,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:50:28,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:50:28,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:50:28,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:50:28,370 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:50:28,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:50:28,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:50:28,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:50:28,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:50:28,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:50:28,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:50:28,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:50:28,374 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:50:28,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:50:28,376 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:50:28,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:50:28,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:50:28,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:50:28,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:50:28,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:50:28,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:50:28,379 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:50:28,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:50:28,379 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:50:28,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:50:28,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:50:28,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:50:28,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:50:28,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:50:28,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:50:28,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:50:28,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:50:28,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:50:28,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:50:28,384 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:50:28,384 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:50:28,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:50:28,385 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_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90a76a2882b85be994db917b0e3084e326cc29272a09018948be7f2d57c03e00 [2022-11-20 11:50:28,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:50:28,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:50:28,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:50:28,792 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:50:28,793 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:50:28,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c [2022-11-20 11:50:31,952 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:50:32,255 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:50:32,256 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c [2022-11-20 11:50:32,269 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/data/9d2515ff8/e962282a66d54fa5969ac7f1bd680163/FLAG0c466ab4c [2022-11-20 11:50:32,287 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/data/9d2515ff8/e962282a66d54fa5969ac7f1bd680163 [2022-11-20 11:50:32,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:50:32,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:50:32,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:50:32,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:50:32,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:50:32,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:50:32" (1/1) ... [2022-11-20 11:50:32,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256e4a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32, skipping insertion in model container [2022-11-20 11:50:32,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:50:32" (1/1) ... [2022-11-20 11:50:32,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:50:32,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:50:32,613 WARN L237 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_9ee95449-e7b1-408d-9343-ed758387223d/sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c[3816,3829] [2022-11-20 11:50:32,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:50:32,806 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:50:32,844 WARN L237 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_9ee95449-e7b1-408d-9343-ed758387223d/sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c[3816,3829] [2022-11-20 11:50:32,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:50:32,961 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:50:32,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32 WrapperNode [2022-11-20 11:50:32,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:50:32,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:50:32,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:50:32,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:50:32,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32" (1/1) ... [2022-11-20 11:50:33,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32" (1/1) ... [2022-11-20 11:50:33,035 INFO L138 Inliner]: procedures = 57, calls = 103, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 216 [2022-11-20 11:50:33,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:50:33,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:50:33,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:50:33,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:50:33,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32" (1/1) ... [2022-11-20 11:50:33,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32" (1/1) ... [2022-11-20 11:50:33,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32" (1/1) ... [2022-11-20 11:50:33,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32" (1/1) ... [2022-11-20 11:50:33,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32" (1/1) ... [2022-11-20 11:50:33,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32" (1/1) ... [2022-11-20 11:50:33,081 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32" (1/1) ... [2022-11-20 11:50:33,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32" (1/1) ... [2022-11-20 11:50:33,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:50:33,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:50:33,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:50:33,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:50:33,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32" (1/1) ... [2022-11-20 11:50:33,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:50:33,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:50:33,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:50:33,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:50:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:50:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-20 11:50:33,197 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-20 11:50:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-20 11:50:33,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-20 11:50:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 11:50:33,198 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 11:50:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 11:50:33,201 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 11:50:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 11:50:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 11:50:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-20 11:50:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-20 11:50:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2022-11-20 11:50:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2022-11-20 11:50:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-20 11:50:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-20 11:50:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:50:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-20 11:50:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-20 11:50:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:50:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:50:33,346 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:50:33,349 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:50:33,730 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:50:33,737 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:50:33,738 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:50:33,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:50:33 BoogieIcfgContainer [2022-11-20 11:50:33,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:50:33,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:50:33,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:50:33,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:50:33,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:50:32" (1/3) ... [2022-11-20 11:50:33,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bda61d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:50:33, skipping insertion in model container [2022-11-20 11:50:33,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:32" (2/3) ... [2022-11-20 11:50:33,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bda61d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:50:33, skipping insertion in model container [2022-11-20 11:50:33,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:50:33" (3/3) ... [2022-11-20 11:50:33,750 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2022-11-20 11:50:33,772 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:50:33,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:50:33,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:50:33,843 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e3f1e9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:50:33,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:50:33,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 84 states have internal predecessors, (102), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-20 11:50:33,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 11:50:33,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:33,859 INFO L195 NwaCegarLoop]: 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] [2022-11-20 11:50:33,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:33,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:33,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2143946218, now seen corresponding path program 1 times [2022-11-20 11:50:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:33,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820819353] [2022-11-20 11:50:33,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:33,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:34,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:50:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:50:34,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:50:34,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820819353] [2022-11-20 11:50:34,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820819353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:50:34,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:50:34,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:50:34,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608565539] [2022-11-20 11:50:34,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:50:34,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:50:34,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:50:34,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:50:34,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:50:34,154 INFO L87 Difference]: Start difference. First operand has 101 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 84 states have internal predecessors, (102), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:50:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:34,239 INFO L93 Difference]: Finished difference Result 194 states and 263 transitions. [2022-11-20 11:50:34,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:50:34,242 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-20 11:50:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:34,262 INFO L225 Difference]: With dead ends: 194 [2022-11-20 11:50:34,263 INFO L226 Difference]: Without dead ends: 92 [2022-11-20 11:50:34,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:50:34,276 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:34,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:50:34,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-20 11:50:34,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-11-20 11:50:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 76 states have internal predecessors, (88), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:50:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2022-11-20 11:50:34,360 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 23 [2022-11-20 11:50:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:34,361 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2022-11-20 11:50:34,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:50:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2022-11-20 11:50:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:50:34,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:34,364 INFO L195 NwaCegarLoop]: 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] [2022-11-20 11:50:34,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:50:34,365 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:34,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:34,366 INFO L85 PathProgramCache]: Analyzing trace with hash -985969136, now seen corresponding path program 1 times [2022-11-20 11:50:34,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:34,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088983396] [2022-11-20 11:50:34,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:34,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:34,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:50:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:50:34,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:50:34,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088983396] [2022-11-20 11:50:34,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088983396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:50:34,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:50:34,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:50:34,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609537291] [2022-11-20 11:50:34,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:50:34,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:50:34,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:50:34,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:50:34,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:50:34,525 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:50:34,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:34,550 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2022-11-20 11:50:34,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:50:34,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-20 11:50:34,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:34,553 INFO L225 Difference]: With dead ends: 149 [2022-11-20 11:50:34,553 INFO L226 Difference]: Without dead ends: 83 [2022-11-20 11:50:34,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:50:34,556 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 13 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:34,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 195 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:50:34,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-20 11:50:34,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-20 11:50:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.3278688524590163) internal successors, (81), 70 states have internal predecessors, (81), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 11:50:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 107 transitions. [2022-11-20 11:50:34,570 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 107 transitions. Word has length 24 [2022-11-20 11:50:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:34,570 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 107 transitions. [2022-11-20 11:50:34,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:50:34,571 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 107 transitions. [2022-11-20 11:50:34,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 11:50:34,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:34,572 INFO L195 NwaCegarLoop]: 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] [2022-11-20 11:50:34,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:50:34,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:34,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:34,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1408992143, now seen corresponding path program 1 times [2022-11-20 11:50:34,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:34,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328507872] [2022-11-20 11:50:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:34,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:34,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:50:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:50:34,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:50:34,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328507872] [2022-11-20 11:50:34,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328507872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:50:34,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:50:34,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:50:34,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085136873] [2022-11-20 11:50:34,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:50:34,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:50:34,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:50:34,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:50:34,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:50:34,755 INFO L87 Difference]: Start difference. First operand 83 states and 107 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:50:34,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:34,858 INFO L93 Difference]: Finished difference Result 159 states and 208 transitions. [2022-11-20 11:50:34,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:50:34,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-11-20 11:50:34,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:34,860 INFO L225 Difference]: With dead ends: 159 [2022-11-20 11:50:34,861 INFO L226 Difference]: Without dead ends: 83 [2022-11-20 11:50:34,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:50:34,863 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 132 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:34,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 268 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:50:34,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-20 11:50:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-20 11:50:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 70 states have internal predecessors, (80), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 11:50:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2022-11-20 11:50:34,879 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 29 [2022-11-20 11:50:34,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:34,880 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2022-11-20 11:50:34,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:50:34,880 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2022-11-20 11:50:34,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 11:50:34,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:34,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:50:34,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:50:34,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:34,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:34,884 INFO L85 PathProgramCache]: Analyzing trace with hash 264525182, now seen corresponding path program 1 times [2022-11-20 11:50:34,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:34,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849919657] [2022-11-20 11:50:34,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:34,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:34,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:50:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:50:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:34,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:50:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:50:34,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:50:34,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849919657] [2022-11-20 11:50:34,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849919657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:50:34,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:50:34,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:50:34,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977973752] [2022-11-20 11:50:34,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:50:34,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:50:34,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:50:34,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:50:34,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:50:34,993 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:50:35,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:35,210 INFO L93 Difference]: Finished difference Result 236 states and 305 transitions. [2022-11-20 11:50:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:50:35,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-20 11:50:35,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:35,212 INFO L225 Difference]: With dead ends: 236 [2022-11-20 11:50:35,213 INFO L226 Difference]: Without dead ends: 160 [2022-11-20 11:50:35,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:50:35,215 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 158 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:35,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 209 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:50:35,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-20 11:50:35,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2022-11-20 11:50:35,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 114 states have (on average 1.2719298245614035) internal successors, (145), 122 states have internal predecessors, (145), 19 states have call successors, (19), 15 states have call predecessors, (19), 20 states have return successors, (30), 21 states have call predecessors, (30), 19 states have call successors, (30) [2022-11-20 11:50:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 194 transitions. [2022-11-20 11:50:35,244 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 194 transitions. Word has length 42 [2022-11-20 11:50:35,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:35,245 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 194 transitions. [2022-11-20 11:50:35,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:50:35,245 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 194 transitions. [2022-11-20 11:50:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 11:50:35,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:35,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:50:35,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:50:35,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:35,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:35,248 INFO L85 PathProgramCache]: Analyzing trace with hash -362273977, now seen corresponding path program 1 times [2022-11-20 11:50:35,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:35,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103405974] [2022-11-20 11:50:35,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:35,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:50:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:50:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:50:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:50:35,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:50:35,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103405974] [2022-11-20 11:50:35,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103405974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:50:35,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:50:35,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:50:35,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834711018] [2022-11-20 11:50:35,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:50:35,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:50:35,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:50:35,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:50:35,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:50:35,417 INFO L87 Difference]: Start difference. First operand 154 states and 194 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:50:35,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:35,619 INFO L93 Difference]: Finished difference Result 309 states and 397 transitions. [2022-11-20 11:50:35,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:50:35,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 48 [2022-11-20 11:50:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:35,622 INFO L225 Difference]: With dead ends: 309 [2022-11-20 11:50:35,622 INFO L226 Difference]: Without dead ends: 162 [2022-11-20 11:50:35,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:50:35,624 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 70 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:35,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 405 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:50:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-20 11:50:35,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 157. [2022-11-20 11:50:35,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 117 states have (on average 1.264957264957265) internal successors, (148), 125 states have internal predecessors, (148), 19 states have call successors, (19), 15 states have call predecessors, (19), 20 states have return successors, (30), 21 states have call predecessors, (30), 19 states have call successors, (30) [2022-11-20 11:50:35,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 197 transitions. [2022-11-20 11:50:35,647 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 197 transitions. Word has length 48 [2022-11-20 11:50:35,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:35,648 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 197 transitions. [2022-11-20 11:50:35,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:50:35,648 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 197 transitions. [2022-11-20 11:50:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 11:50:35,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:35,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:50:35,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:50:35,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:35,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:35,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1179922427, now seen corresponding path program 1 times [2022-11-20 11:50:35,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:35,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262304949] [2022-11-20 11:50:35,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:35,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:50:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:50:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:50:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:50:35,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:50:35,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262304949] [2022-11-20 11:50:35,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262304949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:50:35,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:50:35,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:50:35,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613662492] [2022-11-20 11:50:35,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:50:35,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:50:35,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:50:35,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:50:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:50:35,954 INFO L87 Difference]: Start difference. First operand 157 states and 197 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:50:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:36,192 INFO L93 Difference]: Finished difference Result 320 states and 416 transitions. [2022-11-20 11:50:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:50:36,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 48 [2022-11-20 11:50:36,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:36,199 INFO L225 Difference]: With dead ends: 320 [2022-11-20 11:50:36,199 INFO L226 Difference]: Without dead ends: 170 [2022-11-20 11:50:36,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:50:36,210 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 111 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:36,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 456 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:50:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-20 11:50:36,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2022-11-20 11:50:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 127 states have internal predecessors, (150), 19 states have call successors, (19), 15 states have call predecessors, (19), 20 states have return successors, (30), 21 states have call predecessors, (30), 19 states have call successors, (30) [2022-11-20 11:50:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 199 transitions. [2022-11-20 11:50:36,253 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 199 transitions. Word has length 48 [2022-11-20 11:50:36,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:36,254 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 199 transitions. [2022-11-20 11:50:36,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:50:36,255 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 199 transitions. [2022-11-20 11:50:36,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 11:50:36,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:36,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:50:36,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:50:36,266 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:36,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:36,267 INFO L85 PathProgramCache]: Analyzing trace with hash -961067709, now seen corresponding path program 1 times [2022-11-20 11:50:36,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:36,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058763759] [2022-11-20 11:50:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:36,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:36,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:50:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:36,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:50:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:36,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:50:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:36,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:50:36,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:50:36,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058763759] [2022-11-20 11:50:36,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058763759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:50:36,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:50:36,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:50:36,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071528723] [2022-11-20 11:50:36,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:50:36,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:50:36,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:50:36,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:50:36,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:50:36,431 INFO L87 Difference]: Start difference. First operand 159 states and 199 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:50:36,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:36,766 INFO L93 Difference]: Finished difference Result 447 states and 581 transitions. [2022-11-20 11:50:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:50:36,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2022-11-20 11:50:36,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:36,770 INFO L225 Difference]: With dead ends: 447 [2022-11-20 11:50:36,770 INFO L226 Difference]: Without dead ends: 295 [2022-11-20 11:50:36,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:50:36,772 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 213 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:36,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 330 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:50:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-20 11:50:36,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 287. [2022-11-20 11:50:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 214 states have (on average 1.2383177570093458) internal successors, (265), 226 states have internal predecessors, (265), 36 states have call successors, (36), 33 states have call predecessors, (36), 36 states have return successors, (62), 37 states have call predecessors, (62), 36 states have call successors, (62) [2022-11-20 11:50:36,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 363 transitions. [2022-11-20 11:50:36,808 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 363 transitions. Word has length 48 [2022-11-20 11:50:36,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:36,809 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 363 transitions. [2022-11-20 11:50:36,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:50:36,810 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 363 transitions. [2022-11-20 11:50:36,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 11:50:36,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:36,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:50:36,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:50:36,812 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:36,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:36,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1706490214, now seen corresponding path program 1 times [2022-11-20 11:50:36,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:36,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281963527] [2022-11-20 11:50:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:36,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:36,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:50:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:36,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:50:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:36,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:50:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:36,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:50:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:50:36,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:50:36,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281963527] [2022-11-20 11:50:36,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281963527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:50:36,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:50:36,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:50:36,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159032706] [2022-11-20 11:50:36,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:50:36,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:50:36,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:50:36,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:50:36,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:50:36,958 INFO L87 Difference]: Start difference. First operand 287 states and 363 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:50:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:37,278 INFO L93 Difference]: Finished difference Result 309 states and 393 transitions. [2022-11-20 11:50:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:50:37,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-11-20 11:50:37,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:37,285 INFO L225 Difference]: With dead ends: 309 [2022-11-20 11:50:37,286 INFO L226 Difference]: Without dead ends: 307 [2022-11-20 11:50:37,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:50:37,290 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 149 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:37,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 364 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:50:37,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-20 11:50:37,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 287. [2022-11-20 11:50:37,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 214 states have (on average 1.219626168224299) internal successors, (261), 226 states have internal predecessors, (261), 36 states have call successors, (36), 33 states have call predecessors, (36), 36 states have return successors, (62), 37 states have call predecessors, (62), 36 states have call successors, (62) [2022-11-20 11:50:37,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 359 transitions. [2022-11-20 11:50:37,343 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 359 transitions. Word has length 50 [2022-11-20 11:50:37,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:37,344 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 359 transitions. [2022-11-20 11:50:37,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:50:37,344 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 359 transitions. [2022-11-20 11:50:37,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 11:50:37,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:37,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:50:37,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:50:37,346 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:37,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:37,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1209258857, now seen corresponding path program 1 times [2022-11-20 11:50:37,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:37,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606880240] [2022-11-20 11:50:37,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:37,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:37,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:50:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:37,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:50:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:50:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:50:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:50:37,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:50:37,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606880240] [2022-11-20 11:50:37,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606880240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:50:37,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:50:37,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:50:37,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443412471] [2022-11-20 11:50:37,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:50:37,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:50:37,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:50:37,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:50:37,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:50:37,548 INFO L87 Difference]: Start difference. First operand 287 states and 359 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:50:38,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:38,507 INFO L93 Difference]: Finished difference Result 986 states and 1284 transitions. [2022-11-20 11:50:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 11:50:38,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2022-11-20 11:50:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:38,513 INFO L225 Difference]: With dead ends: 986 [2022-11-20 11:50:38,513 INFO L226 Difference]: Without dead ends: 706 [2022-11-20 11:50:38,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:50:38,516 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 336 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:38,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 342 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:50:38,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-11-20 11:50:38,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 649. [2022-11-20 11:50:38,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 478 states have (on average 1.1903765690376569) internal successors, (569), 509 states have internal predecessors, (569), 88 states have call successors, (88), 66 states have call predecessors, (88), 82 states have return successors, (167), 92 states have call predecessors, (167), 88 states have call successors, (167) [2022-11-20 11:50:38,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 824 transitions. [2022-11-20 11:50:38,600 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 824 transitions. Word has length 52 [2022-11-20 11:50:38,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:38,601 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 824 transitions. [2022-11-20 11:50:38,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:50:38,601 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 824 transitions. [2022-11-20 11:50:38,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 11:50:38,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:38,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:50:38,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:50:38,603 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:38,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:38,604 INFO L85 PathProgramCache]: Analyzing trace with hash 65909037, now seen corresponding path program 1 times [2022-11-20 11:50:38,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:38,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622434008] [2022-11-20 11:50:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:38,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:50:38,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:50:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:50:38,676 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:50:38,683 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:50:38,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:50:38,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:50:38,690 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:50:38,695 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:50:38,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:50:38 BoogieIcfgContainer [2022-11-20 11:50:38,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:50:38,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:50:38,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:50:38,771 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:50:38,771 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:50:33" (3/4) ... [2022-11-20 11:50:38,774 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 11:50:38,842 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:50:38,842 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:50:38,843 INFO L158 Benchmark]: Toolchain (without parser) took 6550.94ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 107.2MB in the beginning and 59.0MB in the end (delta: 48.2MB). Peak memory consumption was 81.2MB. Max. memory is 16.1GB. [2022-11-20 11:50:38,843 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:50:38,844 INFO L158 Benchmark]: CACSL2BoogieTranslator took 668.38ms. Allocated memory is still 151.0MB. Free memory was 106.7MB in the beginning and 88.4MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 11:50:38,844 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.17ms. Allocated memory is still 151.0MB. Free memory was 88.4MB in the beginning and 85.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:50:38,845 INFO L158 Benchmark]: Boogie Preprocessor took 48.00ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 84.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:50:38,845 INFO L158 Benchmark]: RCFGBuilder took 654.83ms. Allocated memory is still 151.0MB. Free memory was 84.2MB in the beginning and 119.3MB in the end (delta: -35.1MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2022-11-20 11:50:38,845 INFO L158 Benchmark]: TraceAbstraction took 5026.84ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 118.7MB in the beginning and 63.2MB in the end (delta: 55.5MB). Peak memory consumption was 88.0MB. Max. memory is 16.1GB. [2022-11-20 11:50:38,846 INFO L158 Benchmark]: Witness Printer took 72.11ms. Allocated memory is still 182.5MB. Free memory was 63.2MB in the beginning and 59.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:50:38,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 668.38ms. Allocated memory is still 151.0MB. Free memory was 106.7MB in the beginning and 88.4MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.17ms. Allocated memory is still 151.0MB. Free memory was 88.4MB in the beginning and 85.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.00ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 84.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 654.83ms. Allocated memory is still 151.0MB. Free memory was 84.2MB in the beginning and 119.3MB in the end (delta: -35.1MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5026.84ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 118.7MB in the beginning and 63.2MB in the end (delta: 55.5MB). Peak memory consumption was 88.0MB. Max. memory is 16.1GB. * Witness Printer took 72.11ms. Allocated memory is still 182.5MB. Free memory was 63.2MB in the beginning and 59.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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: 226]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L239] int pumpRunning = 0; [L240] int systemActive = 1; [L701] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L899] int waterLevel = 1; [L900] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; [L136] FCALL select_helpers() [L137] FCALL select_features() [L138] CALL, EXPR valid_product() [L497] int retValue_acc ; [L500] retValue_acc = 1 [L501] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L156] int splverifierCounter ; [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L160] int tmp___2 ; [L163] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L165] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L167] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L173] tmp = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L177] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L917] COND TRUE waterLevel < 2 [L918] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L177] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L187] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L929] COND FALSE !(\read(methaneLevelCritical)) [L932] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L187] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) [L197] CALL startSystem() [L466] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L197] RET startSystem() [L210] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L247] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L254] COND TRUE \read(systemActive) [L256] CALL processEnvironment() [L328] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L331] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L346] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L302] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L305] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L320] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L276] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L279] COND TRUE ! pumpRunning [L281] CALL, EXPR isHighWaterLevel() [L425] int retValue_acc ; [L426] int tmp ; [L427] int tmp___0 ; [L431] CALL, EXPR isHighWaterSensorDry() [L979] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L982] COND FALSE !(waterLevel < 2) [L986] retValue_acc = 0 [L987] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L431] RET, EXPR isHighWaterSensorDry() [L431] tmp = isHighWaterSensorDry() [L433] COND FALSE !(\read(tmp)) [L436] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L438] retValue_acc = tmp___0 [L439] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L281] RET, EXPR isHighWaterLevel() [L281] tmp = isHighWaterLevel() [L283] COND TRUE \read(tmp) [L285] CALL activatePump() [L356] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L285] RET activatePump() [L320] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L346] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L256] RET processEnvironment() [L262] CALL __utac_acc__Specification1_spec__1() [L507] int tmp ; [L508] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L512] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L938] int retValue_acc ; [L941] retValue_acc = methaneLevelCritical [L942] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L512] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L512] tmp = isMethaneLevelCritical() [L514] COND TRUE \read(tmp) [L516] CALL, EXPR isPumpRunning() [L380] int retValue_acc ; [L383] retValue_acc = pumpRunning [L384] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L516] RET, EXPR isPumpRunning() [L516] tmp___0 = isPumpRunning() [L518] COND TRUE \read(tmp___0) [L520] CALL __automaton_fail() [L226] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1217 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1182 mSDsluCounter, 2697 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1778 mSDsCounter, 346 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1306 IncrementalHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 346 mSolverCounterUnsat, 919 mSDtfsCounter, 1306 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=649occurred in iteration=9, InterpolantAutomatonStates: 71, 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, 107 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 355 ConstructedInterpolants, 0 QuantifiedInterpolants, 683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 3/3 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! [2022-11-20 11:50:38,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee95449-e7b1-408d-9343-ed758387223d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE