./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa --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 cb82edc0720115a7daf634e8ab19e02bd974ec3bbe9487e9c9b9a9d3ab6ca10d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:54:26,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:54:26,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:54:26,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:54:26,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:54:26,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:54:26,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:54:26,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:54:26,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:54:26,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:54:26,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:54:26,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:54:26,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:54:26,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:54:26,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:54:26,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:54:26,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:54:26,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:54:26,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:54:26,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:54:26,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:54:26,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:54:26,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:54:26,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:54:26,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:54:26,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:54:26,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:54:26,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:54:26,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:54:26,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:54:26,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:54:26,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:54:26,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:54:26,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:54:26,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:54:26,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:54:26,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:54:26,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:54:26,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:54:26,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:54:26,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:54:26,209 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:54:26,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:54:26,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:54:26,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:54:26,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:54:26,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:54:26,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:54:26,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:54:26,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:54:26,229 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:54:26,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:54:26,229 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:54:26,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:54:26,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:54:26,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:54:26,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:54:26,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:54:26,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:54:26,230 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:54:26,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:54:26,230 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:54:26,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:54:26,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:54:26,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:54:26,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:54:26,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:54:26,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:54:26,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:54:26,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:54:26,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:54:26,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:54:26,231 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:54:26,231 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:54:26,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:54:26,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:54:26,231 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_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb82edc0720115a7daf634e8ab19e02bd974ec3bbe9487e9c9b9a9d3ab6ca10d [2021-12-06 19:54:26,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:54:26,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:54:26,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:54:26,439 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:54:26,439 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:54:26,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2021-12-06 19:54:26,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/data/1ebae1d15/29e9624d98904536b585261c1656f865/FLAGdb76fbbe9 [2021-12-06 19:54:26,910 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:54:26,911 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2021-12-06 19:54:26,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/data/1ebae1d15/29e9624d98904536b585261c1656f865/FLAGdb76fbbe9 [2021-12-06 19:54:26,932 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/data/1ebae1d15/29e9624d98904536b585261c1656f865 [2021-12-06 19:54:26,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:54:26,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:54:26,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:54:26,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:54:26,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:54:26,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:54:26" (1/1) ... [2021-12-06 19:54:26,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e746dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:54:26, skipping insertion in model container [2021-12-06 19:54:26,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:54:26" (1/1) ... [2021-12-06 19:54:26,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:54:26,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:54:27,141 WARN L230 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_d1188a80-5dbe-465e-9419-98ef0184e083/sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c[6627,6640] [2021-12-06 19:54:27,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:54:27,206 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:54:27,234 WARN L230 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_d1188a80-5dbe-465e-9419-98ef0184e083/sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c[6627,6640] [2021-12-06 19:54:27,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:54:27,284 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:54:27,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:54:27 WrapperNode [2021-12-06 19:54:27,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:54:27,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:54:27,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:54:27,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:54:27,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:54:27" (1/1) ... [2021-12-06 19:54:27,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:54:27" (1/1) ... [2021-12-06 19:54:27,323 INFO L137 Inliner]: procedures = 54, calls = 152, calls flagged for inlining = 24, calls inlined = 20, statements flattened = 233 [2021-12-06 19:54:27,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:54:27,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:54:27,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:54:27,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:54:27,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:54:27" (1/1) ... [2021-12-06 19:54:27,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:54:27" (1/1) ... [2021-12-06 19:54:27,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:54:27" (1/1) ... [2021-12-06 19:54:27,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:54:27" (1/1) ... [2021-12-06 19:54:27,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:54:27" (1/1) ... [2021-12-06 19:54:27,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:54:27" (1/1) ... [2021-12-06 19:54:27,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:54:27" (1/1) ... [2021-12-06 19:54:27,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:54:27,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:54:27,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:54:27,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:54:27,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:54:27" (1/1) ... [2021-12-06 19:54:27,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:54:27,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:54:27,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:54:27,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:54:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:54:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-06 19:54:27,416 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-06 19:54:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-06 19:54:27,416 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-06 19:54:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-06 19:54:27,417 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-06 19:54:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-06 19:54:27,417 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-06 19:54:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:54:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-06 19:54:27,417 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-06 19:54:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:54:27,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:54:27,479 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:54:27,481 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:54:27,674 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:54:27,680 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:54:27,680 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 19:54:27,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:54:27 BoogieIcfgContainer [2021-12-06 19:54:27,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:54:27,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:54:27,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:54:27,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:54:27,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:54:26" (1/3) ... [2021-12-06 19:54:27,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c82ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:54:27, skipping insertion in model container [2021-12-06 19:54:27,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:54:27" (2/3) ... [2021-12-06 19:54:27,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c82ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:54:27, skipping insertion in model container [2021-12-06 19:54:27,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:54:27" (3/3) ... [2021-12-06 19:54:27,687 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2021-12-06 19:54:27,691 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:54:27,691 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:54:27,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:54:27,730 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:54:27,730 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:54:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 60 states have (on average 1.4) internal successors, (84), 66 states have internal predecessors, (84), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 19:54:27,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 19:54:27,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:27,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:27,747 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:54:27,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash 333655523, now seen corresponding path program 1 times [2021-12-06 19:54:27,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:27,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159374153] [2021-12-06 19:54:27,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:27,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:27,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:27,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159374153] [2021-12-06 19:54:27,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159374153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:54:27,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:54:27,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:54:27,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029597859] [2021-12-06 19:54:27,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:54:27,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 19:54:27,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:27,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 19:54:27,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:54:27,935 INFO L87 Difference]: Start difference. First operand has 75 states, 60 states have (on average 1.4) internal successors, (84), 66 states have internal predecessors, (84), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:27,961 INFO L93 Difference]: Finished difference Result 142 states and 195 transitions. [2021-12-06 19:54:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 19:54:27,963 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 19:54:27,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:27,970 INFO L225 Difference]: With dead ends: 142 [2021-12-06 19:54:27,970 INFO L226 Difference]: Without dead ends: 66 [2021-12-06 19:54:27,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:54:27,976 INFO L933 BasicCegarLoop]: 94 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, 94 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 [2021-12-06 19:54:27,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:54:27,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-06 19:54:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-12-06 19:54:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.320754716981132) internal successors, (70), 58 states have internal predecessors, (70), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 19:54:28,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2021-12-06 19:54:28,011 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 19 [2021-12-06 19:54:28,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:28,012 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2021-12-06 19:54:28,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2021-12-06 19:54:28,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 19:54:28,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:28,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:28,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:54:28,015 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:54:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1907368950, now seen corresponding path program 1 times [2021-12-06 19:54:28,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:28,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589876433] [2021-12-06 19:54:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:28,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:28,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:28,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589876433] [2021-12-06 19:54:28,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589876433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:54:28,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:54:28,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:54:28,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586019155] [2021-12-06 19:54:28,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:54:28,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:54:28,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:28,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:54:28,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:54:28,089 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:28,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:28,104 INFO L93 Difference]: Finished difference Result 93 states and 120 transitions. [2021-12-06 19:54:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:54:28,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-06 19:54:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:28,106 INFO L225 Difference]: With dead ends: 93 [2021-12-06 19:54:28,106 INFO L226 Difference]: Without dead ends: 57 [2021-12-06 19:54:28,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:54:28,108 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 18 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 122 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 [2021-12-06 19:54:28,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 122 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:54:28,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-06 19:54:28,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-06 19:54:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 52 states have internal predecessors, (63), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 19:54:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2021-12-06 19:54:28,117 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 20 [2021-12-06 19:54:28,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:28,117 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2021-12-06 19:54:28,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:28,118 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2021-12-06 19:54:28,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 19:54:28,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:28,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:28,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:54:28,119 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:54:28,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash 75787182, now seen corresponding path program 1 times [2021-12-06 19:54:28,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:28,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159242418] [2021-12-06 19:54:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:28,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:28,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:28,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159242418] [2021-12-06 19:54:28,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159242418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:54:28,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:54:28,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:54:28,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84400756] [2021-12-06 19:54:28,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:54:28,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:54:28,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:28,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:54:28,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:54:28,182 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:28,212 INFO L93 Difference]: Finished difference Result 155 states and 204 transitions. [2021-12-06 19:54:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:54:28,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-06 19:54:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:28,214 INFO L225 Difference]: With dead ends: 155 [2021-12-06 19:54:28,214 INFO L226 Difference]: Without dead ends: 105 [2021-12-06 19:54:28,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:54:28,216 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 65 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:28,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 148 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:54:28,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-06 19:54:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2021-12-06 19:54:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 81 states have (on average 1.3703703703703705) internal successors, (111), 90 states have internal predecessors, (111), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 19:54:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 131 transitions. [2021-12-06 19:54:28,235 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 131 transitions. Word has length 25 [2021-12-06 19:54:28,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:28,235 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 131 transitions. [2021-12-06 19:54:28,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:28,236 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 131 transitions. [2021-12-06 19:54:28,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 19:54:28,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:28,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:28,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:54:28,238 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:54:28,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:28,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1851583277, now seen corresponding path program 1 times [2021-12-06 19:54:28,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:28,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835542872] [2021-12-06 19:54:28,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:28,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:28,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:28,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835542872] [2021-12-06 19:54:28,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835542872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:54:28,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:54:28,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:54:28,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062926069] [2021-12-06 19:54:28,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:54:28,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:54:28,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:28,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:54:28,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:54:28,309 INFO L87 Difference]: Start difference. First operand 100 states and 131 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:28,361 INFO L93 Difference]: Finished difference Result 274 states and 374 transitions. [2021-12-06 19:54:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:54:28,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 19:54:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:28,363 INFO L225 Difference]: With dead ends: 274 [2021-12-06 19:54:28,363 INFO L226 Difference]: Without dead ends: 181 [2021-12-06 19:54:28,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:54:28,365 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 44 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:28,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 277 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:54:28,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-06 19:54:28,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-12-06 19:54:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 146 states have (on average 1.3424657534246576) internal successors, (196), 161 states have internal predecessors, (196), 20 states have call successors, (20), 16 states have call predecessors, (20), 14 states have return successors, (22), 14 states have call predecessors, (22), 20 states have call successors, (22) [2021-12-06 19:54:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 238 transitions. [2021-12-06 19:54:28,387 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 238 transitions. Word has length 28 [2021-12-06 19:54:28,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:28,388 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 238 transitions. [2021-12-06 19:54:28,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:28,388 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 238 transitions. [2021-12-06 19:54:28,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 19:54:28,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:28,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:28,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:54:28,390 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:54:28,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:28,390 INFO L85 PathProgramCache]: Analyzing trace with hash 983875416, now seen corresponding path program 1 times [2021-12-06 19:54:28,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:28,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718854543] [2021-12-06 19:54:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:28,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:28,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:28,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718854543] [2021-12-06 19:54:28,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718854543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:54:28,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:54:28,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:54:28,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890252515] [2021-12-06 19:54:28,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:54:28,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:54:28,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:28,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:54:28,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:54:28,434 INFO L87 Difference]: Start difference. First operand 181 states and 238 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:28,476 INFO L93 Difference]: Finished difference Result 471 states and 637 transitions. [2021-12-06 19:54:28,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:54:28,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 19:54:28,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:28,480 INFO L225 Difference]: With dead ends: 471 [2021-12-06 19:54:28,480 INFO L226 Difference]: Without dead ends: 297 [2021-12-06 19:54:28,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:54:28,484 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 44 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:28,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 120 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:54:28,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-12-06 19:54:28,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2021-12-06 19:54:28,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 238 states have (on average 1.315126050420168) internal successors, (313), 253 states have internal predecessors, (313), 30 states have call successors, (30), 30 states have call predecessors, (30), 26 states have return successors, (42), 26 states have call predecessors, (42), 30 states have call successors, (42) [2021-12-06 19:54:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 385 transitions. [2021-12-06 19:54:28,516 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 385 transitions. Word has length 30 [2021-12-06 19:54:28,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:28,516 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 385 transitions. [2021-12-06 19:54:28,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:28,517 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 385 transitions. [2021-12-06 19:54:28,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 19:54:28,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:28,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:28,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:54:28,518 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:54:28,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:28,519 INFO L85 PathProgramCache]: Analyzing trace with hash -2061828423, now seen corresponding path program 1 times [2021-12-06 19:54:28,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:28,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714434836] [2021-12-06 19:54:28,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:28,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:28,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:54:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:28,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:28,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714434836] [2021-12-06 19:54:28,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714434836] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:54:28,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:54:28,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:54:28,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487052693] [2021-12-06 19:54:28,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:54:28,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:54:28,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:28,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:54:28,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:54:28,564 INFO L87 Difference]: Start difference. First operand 295 states and 385 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 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) [2021-12-06 19:54:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:28,683 INFO L93 Difference]: Finished difference Result 391 states and 508 transitions. [2021-12-06 19:54:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:54:28,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 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 32 [2021-12-06 19:54:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:28,688 INFO L225 Difference]: With dead ends: 391 [2021-12-06 19:54:28,688 INFO L226 Difference]: Without dead ends: 389 [2021-12-06 19:54:28,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:54:28,689 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 116 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:28,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 342 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:54:28,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-12-06 19:54:28,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 363. [2021-12-06 19:54:28,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 294 states have (on average 1.2993197278911566) internal successors, (382), 319 states have internal predecessors, (382), 34 states have call successors, (34), 30 states have call predecessors, (34), 34 states have return successors, (54), 30 states have call predecessors, (54), 34 states have call successors, (54) [2021-12-06 19:54:28,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 470 transitions. [2021-12-06 19:54:28,726 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 470 transitions. Word has length 32 [2021-12-06 19:54:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:28,726 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 470 transitions. [2021-12-06 19:54:28,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 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) [2021-12-06 19:54:28,726 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 470 transitions. [2021-12-06 19:54:28,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 19:54:28,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:28,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:28,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:54:28,729 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:54:28,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:28,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1259749296, now seen corresponding path program 1 times [2021-12-06 19:54:28,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:28,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639332461] [2021-12-06 19:54:28,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:28,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:28,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:54:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:28,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:28,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639332461] [2021-12-06 19:54:28,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639332461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:54:28,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:54:28,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:54:28,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730483862] [2021-12-06 19:54:28,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:54:28,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:54:28,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:28,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:54:28,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:54:28,781 INFO L87 Difference]: Start difference. First operand 363 states and 470 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-12-06 19:54:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:28,973 INFO L93 Difference]: Finished difference Result 947 states and 1237 transitions. [2021-12-06 19:54:28,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:54:28,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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 38 [2021-12-06 19:54:28,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:28,979 INFO L225 Difference]: With dead ends: 947 [2021-12-06 19:54:28,979 INFO L226 Difference]: Without dead ends: 591 [2021-12-06 19:54:28,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-12-06 19:54:28,982 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 391 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:28,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 387 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:54:28,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-12-06 19:54:29,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 371. [2021-12-06 19:54:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 302 states have (on average 1.2847682119205297) internal successors, (388), 327 states have internal predecessors, (388), 34 states have call successors, (34), 30 states have call predecessors, (34), 34 states have return successors, (54), 30 states have call predecessors, (54), 34 states have call successors, (54) [2021-12-06 19:54:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 476 transitions. [2021-12-06 19:54:29,016 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 476 transitions. Word has length 38 [2021-12-06 19:54:29,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:29,017 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 476 transitions. [2021-12-06 19:54:29,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-12-06 19:54:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 476 transitions. [2021-12-06 19:54:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 19:54:29,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:29,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:29,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:54:29,019 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:54:29,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:29,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1001583858, now seen corresponding path program 1 times [2021-12-06 19:54:29,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:29,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303005466] [2021-12-06 19:54:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:29,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:29,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:54:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:29,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:29,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:29,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303005466] [2021-12-06 19:54:29,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303005466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:54:29,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:54:29,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:54:29,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898592101] [2021-12-06 19:54:29,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:54:29,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:54:29,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:29,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:54:29,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:54:29,054 INFO L87 Difference]: Start difference. First operand 371 states and 476 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 1 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) [2021-12-06 19:54:29,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:29,158 INFO L93 Difference]: Finished difference Result 748 states and 958 transitions. [2021-12-06 19:54:29,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:54:29,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 1 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 38 [2021-12-06 19:54:29,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:29,162 INFO L225 Difference]: With dead ends: 748 [2021-12-06 19:54:29,162 INFO L226 Difference]: Without dead ends: 384 [2021-12-06 19:54:29,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:54:29,164 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 114 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:29,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 347 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:54:29,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-06 19:54:29,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 324. [2021-12-06 19:54:29,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 267 states have (on average 1.2659176029962547) internal successors, (338), 288 states have internal predecessors, (338), 28 states have call successors, (28), 24 states have call predecessors, (28), 28 states have return successors, (38), 26 states have call predecessors, (38), 28 states have call successors, (38) [2021-12-06 19:54:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 404 transitions. [2021-12-06 19:54:29,192 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 404 transitions. Word has length 38 [2021-12-06 19:54:29,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:29,193 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 404 transitions. [2021-12-06 19:54:29,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 1 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) [2021-12-06 19:54:29,193 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 404 transitions. [2021-12-06 19:54:29,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 19:54:29,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:29,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:29,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:54:29,195 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:54:29,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash 248632046, now seen corresponding path program 1 times [2021-12-06 19:54:29,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:29,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167962867] [2021-12-06 19:54:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:29,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:54:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:29,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:29,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:29,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167962867] [2021-12-06 19:54:29,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167962867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:54:29,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:54:29,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:54:29,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700863457] [2021-12-06 19:54:29,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:54:29,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:54:29,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:29,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:54:29,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:54:29,242 INFO L87 Difference]: Start difference. First operand 324 states and 404 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 1 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) [2021-12-06 19:54:29,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:29,363 INFO L93 Difference]: Finished difference Result 732 states and 970 transitions. [2021-12-06 19:54:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:54:29,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 1 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 38 [2021-12-06 19:54:29,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:29,367 INFO L225 Difference]: With dead ends: 732 [2021-12-06 19:54:29,367 INFO L226 Difference]: Without dead ends: 489 [2021-12-06 19:54:29,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:54:29,369 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 97 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:29,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 449 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:54:29,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-12-06 19:54:29,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 487. [2021-12-06 19:54:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 398 states have (on average 1.2386934673366834) internal successors, (493), 425 states have internal predecessors, (493), 44 states have call successors, (44), 38 states have call predecessors, (44), 44 states have return successors, (78), 42 states have call predecessors, (78), 44 states have call successors, (78) [2021-12-06 19:54:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 615 transitions. [2021-12-06 19:54:29,403 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 615 transitions. Word has length 38 [2021-12-06 19:54:29,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:29,404 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 615 transitions. [2021-12-06 19:54:29,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 1 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) [2021-12-06 19:54:29,404 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 615 transitions. [2021-12-06 19:54:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 19:54:29,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:29,406 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:29,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:54:29,406 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:54:29,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:29,407 INFO L85 PathProgramCache]: Analyzing trace with hash 114679, now seen corresponding path program 1 times [2021-12-06 19:54:29,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:29,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523775966] [2021-12-06 19:54:29,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:29,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:29,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:54:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:29,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:54:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:29,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:29,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523775966] [2021-12-06 19:54:29,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523775966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:54:29,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:54:29,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:54:29,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438260578] [2021-12-06 19:54:29,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:54:29,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:54:29,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:29,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:54:29,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:54:29,458 INFO L87 Difference]: Start difference. First operand 487 states and 615 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:54:29,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:29,564 INFO L93 Difference]: Finished difference Result 823 states and 1040 transitions. [2021-12-06 19:54:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:54:29,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2021-12-06 19:54:29,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:29,567 INFO L225 Difference]: With dead ends: 823 [2021-12-06 19:54:29,567 INFO L226 Difference]: Without dead ends: 343 [2021-12-06 19:54:29,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:54:29,569 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 141 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:29,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 286 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:54:29,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-06 19:54:29,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 335. [2021-12-06 19:54:29,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 273 states have (on average 1.2307692307692308) internal successors, (336), 292 states have internal predecessors, (336), 31 states have call successors, (31), 28 states have call predecessors, (31), 30 states have return successors, (49), 29 states have call predecessors, (49), 31 states have call successors, (49) [2021-12-06 19:54:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 416 transitions. [2021-12-06 19:54:29,586 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 416 transitions. Word has length 61 [2021-12-06 19:54:29,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:29,586 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 416 transitions. [2021-12-06 19:54:29,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:54:29,587 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 416 transitions. [2021-12-06 19:54:29,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 19:54:29,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:29,588 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:29,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 19:54:29,588 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:54:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1339398285, now seen corresponding path program 1 times [2021-12-06 19:54:29,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:29,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838314922] [2021-12-06 19:54:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:29,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:29,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 19:54:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:54:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:29,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 19:54:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:29,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:54:29,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838314922] [2021-12-06 19:54:29,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838314922] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:54:29,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272494282] [2021-12-06 19:54:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:29,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:54:29,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:54:29,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:54:29,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:54:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:29,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 19:54:29,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:54:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:29,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:54:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:29,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272494282] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:54:29,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:54:29,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 8 [2021-12-06 19:54:29,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13867023] [2021-12-06 19:54:29,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:54:29,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:54:29,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:54:29,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:54:29,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:54:29,933 INFO L87 Difference]: Start difference. First operand 335 states and 416 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 19:54:30,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:30,136 INFO L93 Difference]: Finished difference Result 776 states and 1009 transitions. [2021-12-06 19:54:30,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 19:54:30,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 63 [2021-12-06 19:54:30,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:30,139 INFO L225 Difference]: With dead ends: 776 [2021-12-06 19:54:30,140 INFO L226 Difference]: Without dead ends: 511 [2021-12-06 19:54:30,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2021-12-06 19:54:30,141 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 189 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:30,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 552 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:54:30,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-12-06 19:54:30,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 452. [2021-12-06 19:54:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 366 states have (on average 1.2349726775956285) internal successors, (452), 392 states have internal predecessors, (452), 43 states have call successors, (43), 39 states have call predecessors, (43), 42 states have return successors, (72), 38 states have call predecessors, (72), 43 states have call successors, (72) [2021-12-06 19:54:30,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 567 transitions. [2021-12-06 19:54:30,170 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 567 transitions. Word has length 63 [2021-12-06 19:54:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:30,170 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 567 transitions. [2021-12-06 19:54:30,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 19:54:30,171 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 567 transitions. [2021-12-06 19:54:30,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-06 19:54:30,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:30,173 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:30,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:54:30,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:54:30,374 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:54:30,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:30,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1539867278, now seen corresponding path program 2 times [2021-12-06 19:54:30,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:54:30,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417641610] [2021-12-06 19:54:30,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:54:30,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:54:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:54:30,426 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:54:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:54:30,519 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:54:30,520 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 19:54:30,521 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 19:54:30,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 19:54:30,526 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:30,529 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 19:54:30,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 07:54:30 BoogieIcfgContainer [2021-12-06 19:54:30,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 19:54:30,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:54:30,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:54:30,594 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:54:30,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:54:27" (3/4) ... [2021-12-06 19:54:30,596 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 19:54:30,675 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 19:54:30,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:54:30,676 INFO L158 Benchmark]: Toolchain (without parser) took 3740.62ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 68.9MB in the beginning and 73.1MB in the end (delta: -4.2MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2021-12-06 19:54:30,676 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory was 49.8MB in the beginning and 49.7MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:54:30,677 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.51ms. Allocated memory is still 102.8MB. Free memory was 68.8MB in the beginning and 72.4MB in the end (delta: -3.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 19:54:30,677 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.32ms. Allocated memory is still 102.8MB. Free memory was 72.4MB in the beginning and 70.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:54:30,677 INFO L158 Benchmark]: Boogie Preprocessor took 23.85ms. Allocated memory is still 102.8MB. Free memory was 70.3MB in the beginning and 68.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:54:30,678 INFO L158 Benchmark]: RCFGBuilder took 332.96ms. Allocated memory is still 102.8MB. Free memory was 68.8MB in the beginning and 53.4MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-06 19:54:30,678 INFO L158 Benchmark]: TraceAbstraction took 2910.83ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 52.8MB in the beginning and 81.5MB in the end (delta: -28.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:54:30,679 INFO L158 Benchmark]: Witness Printer took 81.63ms. Allocated memory is still 123.7MB. Free memory was 81.5MB in the beginning and 73.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 19:54:30,681 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory was 49.8MB in the beginning and 49.7MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.51ms. Allocated memory is still 102.8MB. Free memory was 68.8MB in the beginning and 72.4MB in the end (delta: -3.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.32ms. Allocated memory is still 102.8MB. Free memory was 72.4MB in the beginning and 70.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.85ms. Allocated memory is still 102.8MB. Free memory was 70.3MB in the beginning and 68.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 332.96ms. Allocated memory is still 102.8MB. Free memory was 68.8MB in the beginning and 53.4MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2910.83ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 52.8MB in the beginning and 81.5MB in the end (delta: -28.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 81.63ms. Allocated memory is still 123.7MB. Free memory was 81.5MB in the beginning and 73.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. 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: 447]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L133] int pumpRunning = 0; [L134] int systemActive = 1; [L309] int cleanupTimeShifts = 4; [L621] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L819] int waterLevel = 1; [L820] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L385] int retValue_acc ; [L386] int tmp ; [L390] FCALL select_helpers() [L391] FCALL select_features() [L392] CALL, EXPR valid_product() [L434] int retValue_acc ; [L437] retValue_acc = 1 [L438] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L392] RET, EXPR valid_product() [L392] tmp = valid_product() [L394] COND TRUE \read(tmp) [L396] FCALL setup() [L397] CALL runTest() [L376] CALL test() [L57] int splverifierCounter ; [L58] int tmp ; [L59] int tmp___0 ; [L60] int tmp___1 ; [L61] int tmp___2 ; [L64] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L66] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L68] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L74] tmp = __VERIFIER_nondet_int() [L76] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L78] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L837] COND TRUE waterLevel < 2 [L838] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L78] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L304] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L98] RET startSystem() [L113] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L141] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L148] COND TRUE \read(systemActive) [L150] CALL processEnvironment() [L170] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L173] COND TRUE ! pumpRunning [L175] CALL, EXPR isHighWaterLevel() [L267] int retValue_acc ; [L268] int tmp ; [L269] int tmp___0 ; [L273] CALL, EXPR isHighWaterSensorDry() [L899] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L902] COND FALSE !(waterLevel < 2) [L906] retValue_acc = 0 [L907] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L273] RET, EXPR isHighWaterSensorDry() [L273] tmp = isHighWaterSensorDry() [L275] COND FALSE !(\read(tmp)) [L278] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L280] retValue_acc = tmp___0 [L281] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L175] RET, EXPR isHighWaterLevel() [L175] tmp = isHighWaterLevel() [L177] COND TRUE \read(tmp) [L179] CALL activatePump() [L198] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L179] RET activatePump() [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L914] int tmp ; [L915] int tmp___0 ; [L919] CALL, EXPR getWaterLevel() [L890] int retValue_acc ; [L893] retValue_acc = waterLevel [L894] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L919] RET, EXPR getWaterLevel() [L919] tmp = getWaterLevel() [L921] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L156] RET __utac_acc__Specification4_spec__1() [L113] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L66] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L68] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L74] tmp = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L304] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L98] RET startSystem() [L113] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L141] COND TRUE \read(pumpRunning) [L143] CALL lowerWaterLevel() [L825] COND TRUE waterLevel > 0 [L826] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L143] RET lowerWaterLevel() [L148] COND TRUE \read(systemActive) [L150] CALL processEnvironment() [L170] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L173] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L188] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L914] int tmp ; [L915] int tmp___0 ; [L919] CALL, EXPR getWaterLevel() [L890] int retValue_acc ; [L893] retValue_acc = waterLevel [L894] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L919] RET, EXPR getWaterLevel() [L919] tmp = getWaterLevel() [L921] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L156] RET __utac_acc__Specification4_spec__1() [L113] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L66] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L68] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L74] tmp = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L304] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L98] RET startSystem() [L113] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L141] COND TRUE \read(pumpRunning) [L143] CALL lowerWaterLevel() [L825] COND TRUE waterLevel > 0 [L826] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L143] RET lowerWaterLevel() [L148] COND TRUE \read(systemActive) [L150] CALL processEnvironment() [L170] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L173] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L188] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L914] int tmp ; [L915] int tmp___0 ; [L919] CALL, EXPR getWaterLevel() [L890] int retValue_acc ; [L893] retValue_acc = waterLevel [L894] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L919] RET, EXPR getWaterLevel() [L919] tmp = getWaterLevel() [L921] COND TRUE tmp == 0 [L923] CALL, EXPR isPumpRunning() [L222] int retValue_acc ; [L225] retValue_acc = pumpRunning [L226] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L923] RET, EXPR isPumpRunning() [L923] tmp___0 = isPumpRunning() [L925] COND TRUE \read(tmp___0) [L927] CALL __automaton_fail() [L447] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1252 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1219 mSDsluCounter, 3124 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2163 mSDsCounter, 168 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 792 IncrementalHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 168 mSolverCounterUnsat, 961 mSDtfsCounter, 792 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=487occurred in iteration=9, InterpolantAutomatonStates: 89, 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, 11 MinimizatonAttempts, 382 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 543 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 505 ConstructedInterpolants, 0 QuantifiedInterpolants, 974 SizeOfPredicates, 4 NumberOfNonLiveVariables, 385 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 53/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 19:54:30,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1188a80-5dbe-465e-9419-98ef0184e083/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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