./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ --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 64bit --witnessprinter.graph.data.programhash f51fd7a7e803b337407ebecb084bc416ae9c8b7a3d33ff72a0e0702d21471e83 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 11:04:21,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:04:21,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:04:21,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:04:21,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:04:21,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:04:21,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:04:21,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:04:21,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:04:21,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:04:21,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:04:21,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:04:21,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:04:21,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:04:21,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:04:21,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:04:21,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:04:21,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:04:21,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:04:21,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:04:21,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:04:21,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:04:21,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:04:21,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:04:21,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:04:21,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:04:21,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:04:21,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:04:21,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:04:21,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:04:21,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:04:21,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:04:21,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:04:21,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:04:21,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:04:21,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:04:21,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:04:21,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:04:21,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:04:21,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:04:21,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:04:21,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 11:04:21,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:04:21,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:04:21,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:04:21,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:04:21,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:04:21,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:04:21,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:04:21,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:04:21,287 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:04:21,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:04:21,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:04:21,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:04:21,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:04:21,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:04:21,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:04:21,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:04:21,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:04:21,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:04:21,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:04:21,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:04:21,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:04:21,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:04:21,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:04:21,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:04:21,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:04:21,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:04:21,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:04:21,294 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:04:21,295 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:04:21,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:04:21,295 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_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f51fd7a7e803b337407ebecb084bc416ae9c8b7a3d33ff72a0e0702d21471e83 [2022-10-17 11:04:21,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:04:21,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:04:21,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:04:21,737 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:04:21,738 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:04:21,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2022-10-17 11:04:21,819 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/data/7a9ab3bfe/530d95dfbb2e429ab7a1239aaf95cabd/FLAG0aa1e65ab [2022-10-17 11:04:22,865 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:04:22,866 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2022-10-17 11:04:22,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/data/7a9ab3bfe/530d95dfbb2e429ab7a1239aaf95cabd/FLAG0aa1e65ab [2022-10-17 11:04:23,209 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/data/7a9ab3bfe/530d95dfbb2e429ab7a1239aaf95cabd [2022-10-17 11:04:23,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:04:23,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:04:23,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:04:23,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:04:23,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:04:23,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:04:23" (1/1) ... [2022-10-17 11:04:23,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@468a2921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:23, skipping insertion in model container [2022-10-17 11:04:23,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:04:23" (1/1) ... [2022-10-17 11:04:23,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:04:23,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:04:25,476 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_681cf274-7e81-493f-98d4-dbe6c1e05bce/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2022-10-17 11:04:25,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:04:25,551 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:04:25,976 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_681cf274-7e81-493f-98d4-dbe6c1e05bce/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2022-10-17 11:04:25,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:04:26,289 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:04:26,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:26 WrapperNode [2022-10-17 11:04:26,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:04:26,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:04:26,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:04:26,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:04:26,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:26" (1/1) ... [2022-10-17 11:04:26,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:26" (1/1) ... [2022-10-17 11:04:26,590 INFO L138 Inliner]: procedures = 200, calls = 1489, calls flagged for inlining = 98, calls inlined = 84, statements flattened = 3372 [2022-10-17 11:04:26,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:04:26,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:04:26,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:04:26,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:04:26,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:26" (1/1) ... [2022-10-17 11:04:26,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:26" (1/1) ... [2022-10-17 11:04:26,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:26" (1/1) ... [2022-10-17 11:04:26,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:26" (1/1) ... [2022-10-17 11:04:26,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:26" (1/1) ... [2022-10-17 11:04:26,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:26" (1/1) ... [2022-10-17 11:04:26,928 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:26" (1/1) ... [2022-10-17 11:04:26,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:26" (1/1) ... [2022-10-17 11:04:26,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:04:26,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:04:26,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:04:26,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:04:26,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:26" (1/1) ... [2022-10-17 11:04:26,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:04:27,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:04:27,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:04:27,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:04:27,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 11:04:27,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 11:04:27,101 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-10-17 11:04:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-10-17 11:04:27,101 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-10-17 11:04:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-10-17 11:04:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-10-17 11:04:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-10-17 11:04:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 11:04:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 11:04:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-10-17 11:04:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-10-17 11:04:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-10-17 11:04:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-10-17 11:04:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-10-17 11:04:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-10-17 11:04:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-10-17 11:04:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-10-17 11:04:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-10-17 11:04:27,105 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-10-17 11:04:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2022-10-17 11:04:27,105 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2022-10-17 11:04:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-17 11:04:27,105 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-17 11:04:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-10-17 11:04:27,106 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-10-17 11:04:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 11:04:27,106 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 11:04:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:04:27,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 11:04:27,107 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-10-17 11:04:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-10-17 11:04:27,107 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-10-17 11:04:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-10-17 11:04:27,108 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 11:04:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 11:04:27,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-10-17 11:04:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-10-17 11:04:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:04:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-10-17 11:04:27,110 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-10-17 11:04:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 11:04:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-17 11:04:27,110 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-17 11:04:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-17 11:04:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-17 11:04:27,111 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-10-17 11:04:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-10-17 11:04:27,111 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-10-17 11:04:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-10-17 11:04:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2022-10-17 11:04:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2022-10-17 11:04:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-17 11:04:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-17 11:04:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-10-17 11:04:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-10-17 11:04:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2022-10-17 11:04:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2022-10-17 11:04:27,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 11:04:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-17 11:04:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-17 11:04:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-10-17 11:04:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-10-17 11:04:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-10-17 11:04:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-10-17 11:04:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 11:04:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:04:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-10-17 11:04:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-10-17 11:04:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-10-17 11:04:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-10-17 11:04:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 11:04:27,120 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 11:04:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2022-10-17 11:04:27,121 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2022-10-17 11:04:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 11:04:27,121 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 11:04:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:04:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-10-17 11:04:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-10-17 11:04:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-10-17 11:04:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-10-17 11:04:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2022-10-17 11:04:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2022-10-17 11:04:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 11:04:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-10-17 11:04:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-10-17 11:04:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:04:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2022-10-17 11:04:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2022-10-17 11:04:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 11:04:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-10-17 11:04:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-10-17 11:04:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2022-10-17 11:04:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2022-10-17 11:04:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2022-10-17 11:04:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2022-10-17 11:04:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-10-17 11:04:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-10-17 11:04:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-10-17 11:04:27,128 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-10-17 11:04:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-10-17 11:04:27,129 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-10-17 11:04:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-10-17 11:04:27,129 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-10-17 11:04:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-10-17 11:04:27,130 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-10-17 11:04:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-10-17 11:04:27,130 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-10-17 11:04:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-10-17 11:04:27,130 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-10-17 11:04:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-10-17 11:04:27,131 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-10-17 11:04:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2022-10-17 11:04:27,132 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2022-10-17 11:04:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:04:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-10-17 11:04:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-10-17 11:04:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-10-17 11:04:27,137 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-10-17 11:04:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-10-17 11:04:27,137 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-10-17 11:04:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-10-17 11:04:27,139 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-10-17 11:04:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:04:27,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:04:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-17 11:04:27,141 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-17 11:04:27,860 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:04:27,865 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:04:29,093 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 11:04:29,113 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 11:04:29,129 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 11:04:29,132 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 11:04:29,134 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 11:04:29,135 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 11:04:29,150 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 11:04:31,645 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##252: assume !false; [2022-10-17 11:04:31,646 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##251: assume false; [2022-10-17 11:04:31,646 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##283: assume !false; [2022-10-17 11:04:31,646 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##282: assume false; [2022-10-17 11:04:31,646 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##289: assume !false; [2022-10-17 11:04:31,646 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##288: assume false; [2022-10-17 11:04:31,647 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##238: assume !false; [2022-10-17 11:04:31,647 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##237: assume false; [2022-10-17 11:04:31,647 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##438: assume false; [2022-10-17 11:04:31,647 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##439: assume !false; [2022-10-17 11:04:31,648 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-10-17 11:04:31,648 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-10-17 11:04:31,648 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##115: assume false; [2022-10-17 11:04:31,648 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##116: assume !false;call ULTIMATE.dealloc(fst_ioctl_~#wrthdr~0#1.base, fst_ioctl_~#wrthdr~0#1.offset);havoc fst_ioctl_~#wrthdr~0#1.base, fst_ioctl_~#wrthdr~0#1.offset;call ULTIMATE.dealloc(fst_ioctl_~#info~0#1.base, fst_ioctl_~#info~0#1.offset);havoc fst_ioctl_~#info~0#1.base, fst_ioctl_~#info~0#1.offset; [2022-10-17 11:04:31,749 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:04:31,772 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:04:31,772 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 11:04:31,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:04:31 BoogieIcfgContainer [2022-10-17 11:04:31,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:04:31,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:04:31,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:04:31,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:04:31,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:04:23" (1/3) ... [2022-10-17 11:04:31,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6713da61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:04:31, skipping insertion in model container [2022-10-17 11:04:31,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:26" (2/3) ... [2022-10-17 11:04:31,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6713da61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:04:31, skipping insertion in model container [2022-10-17 11:04:31,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:04:31" (3/3) ... [2022-10-17 11:04:31,788 INFO L112 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2022-10-17 11:04:31,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:04:31,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:04:31,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:04:31,915 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6fc124d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:04:31,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:04:31,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 1095 states, 777 states have (on average 1.3153153153153154) internal successors, (1022), 785 states have internal predecessors, (1022), 260 states have call successors, (260), 56 states have call predecessors, (260), 56 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) [2022-10-17 11:04:31,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-17 11:04:31,937 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:04:31,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:31,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:04:31,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:31,944 INFO L85 PathProgramCache]: Analyzing trace with hash -698303565, now seen corresponding path program 1 times [2022-10-17 11:04:31,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:31,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233353647] [2022-10-17 11:04:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:31,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 11:04:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:32,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 11:04:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:32,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:32,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233353647] [2022-10-17 11:04:32,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233353647] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:32,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:32,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:04:32,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028507762] [2022-10-17 11:04:32,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:32,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:04:32,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:32,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:04:32,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:04:32,797 INFO L87 Difference]: Start difference. First operand has 1095 states, 777 states have (on average 1.3153153153153154) internal successors, (1022), 785 states have internal predecessors, (1022), 260 states have call successors, (260), 56 states have call predecessors, (260), 56 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:04:33,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:04:33,103 INFO L93 Difference]: Finished difference Result 2185 states and 3091 transitions. [2022-10-17 11:04:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:04:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-10-17 11:04:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:04:33,153 INFO L225 Difference]: With dead ends: 2185 [2022-10-17 11:04:33,153 INFO L226 Difference]: Without dead ends: 1091 [2022-10-17 11:04:33,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:04:33,180 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:04:33,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3040 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:04:33,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-10-17 11:04:33,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1090. [2022-10-17 11:04:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 774 states have (on average 1.2945736434108528) internal successors, (1002), 780 states have internal predecessors, (1002), 260 states have call successors, (260), 56 states have call predecessors, (260), 55 states have return successors, (258), 258 states have call predecessors, (258), 258 states have call successors, (258) [2022-10-17 11:04:33,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1520 transitions. [2022-10-17 11:04:33,373 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1520 transitions. Word has length 21 [2022-10-17 11:04:33,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:04:33,374 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1520 transitions. [2022-10-17 11:04:33,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:04:33,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1520 transitions. [2022-10-17 11:04:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 11:04:33,376 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:04:33,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:33,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:04:33,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:04:33,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:33,377 INFO L85 PathProgramCache]: Analyzing trace with hash 83203695, now seen corresponding path program 1 times [2022-10-17 11:04:33,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:33,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363855687] [2022-10-17 11:04:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:33,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:04:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:33,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-17 11:04:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:33,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:33,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363855687] [2022-10-17 11:04:33,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363855687] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:04:33,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818370206] [2022-10-17 11:04:33,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:33,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:04:33,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:04:33,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:04:33,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 11:04:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:34,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:04:34,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:04:34,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:04:34,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:04:34,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818370206] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:34,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:04:34,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-10-17 11:04:34,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261758016] [2022-10-17 11:04:34,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:34,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:04:34,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:34,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:04:34,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:04:34,367 INFO L87 Difference]: Start difference. First operand 1090 states and 1520 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:04:34,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:04:34,567 INFO L93 Difference]: Finished difference Result 3242 states and 4526 transitions. [2022-10-17 11:04:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:04:34,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-10-17 11:04:34,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:04:34,590 INFO L225 Difference]: With dead ends: 3242 [2022-10-17 11:04:34,590 INFO L226 Difference]: Without dead ends: 2160 [2022-10-17 11:04:34,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:04:34,598 INFO L413 NwaCegarLoop]: 2045 mSDtfsCounter, 1494 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:04:34,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 3543 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:04:34,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2022-10-17 11:04:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 2157. [2022-10-17 11:04:34,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2157 states, 1530 states have (on average 1.29281045751634) internal successors, (1978), 1541 states have internal predecessors, (1978), 516 states have call successors, (516), 111 states have call predecessors, (516), 110 states have return successors, (514), 514 states have call predecessors, (514), 514 states have call successors, (514) [2022-10-17 11:04:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 3008 transitions. [2022-10-17 11:04:34,768 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 3008 transitions. Word has length 23 [2022-10-17 11:04:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:04:34,769 INFO L495 AbstractCegarLoop]: Abstraction has 2157 states and 3008 transitions. [2022-10-17 11:04:34,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:04:34,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 3008 transitions. [2022-10-17 11:04:34,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-17 11:04:34,774 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:04:34,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:34,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 11:04:34,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:04:34,993 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:04:34,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:34,993 INFO L85 PathProgramCache]: Analyzing trace with hash -17323993, now seen corresponding path program 1 times [2022-10-17 11:04:34,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:34,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132929362] [2022-10-17 11:04:34,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:34,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:35,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:04:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:35,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-17 11:04:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:35,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 11:04:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:35,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:35,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132929362] [2022-10-17 11:04:35,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132929362] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:04:35,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650991944] [2022-10-17 11:04:35,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:35,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:04:35,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:04:35,298 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:04:35,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 11:04:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:35,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:04:35,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:04:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:35,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:04:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:36,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650991944] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:04:36,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 11:04:36,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-17 11:04:36,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134899316] [2022-10-17 11:04:36,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 11:04:36,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:04:36,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:36,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:04:36,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:04:36,053 INFO L87 Difference]: Start difference. First operand 2157 states and 3008 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 11:04:36,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:04:36,275 INFO L93 Difference]: Finished difference Result 4314 states and 6018 transitions. [2022-10-17 11:04:36,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:04:36,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 43 [2022-10-17 11:04:36,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:04:36,297 INFO L225 Difference]: With dead ends: 4314 [2022-10-17 11:04:36,297 INFO L226 Difference]: Without dead ends: 2163 [2022-10-17 11:04:36,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:04:36,314 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 6 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4544 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:04:36,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4544 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:04:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2022-10-17 11:04:36,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2022-10-17 11:04:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 1536 states have (on average 1.2916666666666667) internal successors, (1984), 1547 states have internal predecessors, (1984), 516 states have call successors, (516), 111 states have call predecessors, (516), 110 states have return successors, (514), 514 states have call predecessors, (514), 514 states have call successors, (514) [2022-10-17 11:04:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3014 transitions. [2022-10-17 11:04:36,486 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3014 transitions. Word has length 43 [2022-10-17 11:04:36,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:04:36,486 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 3014 transitions. [2022-10-17 11:04:36,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 11:04:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3014 transitions. [2022-10-17 11:04:36,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-17 11:04:36,498 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:04:36,498 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:36,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 11:04:36,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-17 11:04:36,725 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:04:36,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:36,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1685691483, now seen corresponding path program 2 times [2022-10-17 11:04:36,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:36,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568378934] [2022-10-17 11:04:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:36,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:37,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:04:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 11:04:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:37,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 11:04:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:37,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:37,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:37,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568378934] [2022-10-17 11:04:37,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568378934] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:04:37,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382177949] [2022-10-17 11:04:37,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 11:04:37,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:04:37,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:04:37,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:04:37,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 11:04:37,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 11:04:37,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 11:04:37,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 11:04:37,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:04:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-17 11:04:37,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:04:37,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382177949] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:37,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:04:37,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-10-17 11:04:37,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151580144] [2022-10-17 11:04:37,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:37,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:04:37,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:37,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:04:37,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-10-17 11:04:37,856 INFO L87 Difference]: Start difference. First operand 2163 states and 3014 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 11:04:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:04:38,932 INFO L93 Difference]: Finished difference Result 6226 states and 8961 transitions. [2022-10-17 11:04:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:04:38,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2022-10-17 11:04:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:04:38,972 INFO L225 Difference]: With dead ends: 6226 [2022-10-17 11:04:38,972 INFO L226 Difference]: Without dead ends: 4082 [2022-10-17 11:04:38,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-10-17 11:04:38,986 INFO L413 NwaCegarLoop]: 2766 mSDtfsCounter, 2259 mSDsluCounter, 6571 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2452 SdHoareTripleChecker+Valid, 9337 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-17 11:04:38,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2452 Valid, 9337 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-17 11:04:38,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2022-10-17 11:04:39,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 2092. [2022-10-17 11:04:39,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 1490 states have (on average 1.2906040268456376) internal successors, (1923), 1500 states have internal predecessors, (1923), 491 states have call successors, (491), 111 states have call predecessors, (491), 110 states have return successors, (489), 489 states have call predecessors, (489), 489 states have call successors, (489) [2022-10-17 11:04:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 2903 transitions. [2022-10-17 11:04:39,256 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 2903 transitions. Word has length 49 [2022-10-17 11:04:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:04:39,256 INFO L495 AbstractCegarLoop]: Abstraction has 2092 states and 2903 transitions. [2022-10-17 11:04:39,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 11:04:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 2903 transitions. [2022-10-17 11:04:39,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-17 11:04:39,260 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:04:39,260 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:39,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-17 11:04:39,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:04:39,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:04:39,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:39,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1276549099, now seen corresponding path program 1 times [2022-10-17 11:04:39,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:39,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771703325] [2022-10-17 11:04:39,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:39,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:39,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:04:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:39,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 11:04:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:39,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 11:04:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:39,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:39,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771703325] [2022-10-17 11:04:39,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771703325] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:04:39,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859490528] [2022-10-17 11:04:39,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:39,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:04:39,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:04:39,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:04:39,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 11:04:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:40,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 11:04:40,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:04:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:40,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:04:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:40,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859490528] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:04:40,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 11:04:40,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-10-17 11:04:40,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959178271] [2022-10-17 11:04:40,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 11:04:40,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 11:04:40,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:40,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 11:04:40,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-17 11:04:40,571 INFO L87 Difference]: Start difference. First operand 2092 states and 2903 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 11:04:40,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:04:40,786 INFO L93 Difference]: Finished difference Result 4184 states and 5811 transitions. [2022-10-17 11:04:40,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 11:04:40,787 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 51 [2022-10-17 11:04:40,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:04:40,805 INFO L225 Difference]: With dead ends: 4184 [2022-10-17 11:04:40,805 INFO L226 Difference]: Without dead ends: 2104 [2022-10-17 11:04:40,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-17 11:04:40,814 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 10 mSDsluCounter, 4542 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6058 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:04:40,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 6058 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:04:40,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2022-10-17 11:04:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2104. [2022-10-17 11:04:40,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 1502 states have (on average 1.2882822902796272) internal successors, (1935), 1512 states have internal predecessors, (1935), 491 states have call successors, (491), 111 states have call predecessors, (491), 110 states have return successors, (489), 489 states have call predecessors, (489), 489 states have call successors, (489) [2022-10-17 11:04:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 2915 transitions. [2022-10-17 11:04:40,980 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 2915 transitions. Word has length 51 [2022-10-17 11:04:40,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:04:40,983 INFO L495 AbstractCegarLoop]: Abstraction has 2104 states and 2915 transitions. [2022-10-17 11:04:40,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 11:04:40,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 2915 transitions. [2022-10-17 11:04:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 11:04:40,985 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:04:40,986 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:41,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-17 11:04:41,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:04:41,205 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:04:41,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:41,205 INFO L85 PathProgramCache]: Analyzing trace with hash -239701635, now seen corresponding path program 2 times [2022-10-17 11:04:41,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:41,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627579468] [2022-10-17 11:04:41,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:41,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:41,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 11:04:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 11:04:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:41,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 11:04:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:41,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:41,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627579468] [2022-10-17 11:04:41,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627579468] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:04:41,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022897226] [2022-10-17 11:04:41,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 11:04:41,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:04:41,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:04:41,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:04:41,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 11:04:42,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 11:04:42,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 11:04:42,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 11:04:42,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:04:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-10-17 11:04:42,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:04:42,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022897226] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:42,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:04:42,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 15 [2022-10-17 11:04:42,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812126715] [2022-10-17 11:04:42,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:42,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:04:42,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:42,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:04:42,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2022-10-17 11:04:42,648 INFO L87 Difference]: Start difference. First operand 2104 states and 2915 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 11:04:44,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:04:44,556 INFO L93 Difference]: Finished difference Result 3108 states and 4306 transitions. [2022-10-17 11:04:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:04:44,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 63 [2022-10-17 11:04:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:04:44,596 INFO L225 Difference]: With dead ends: 3108 [2022-10-17 11:04:44,596 INFO L226 Difference]: Without dead ends: 3105 [2022-10-17 11:04:44,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2022-10-17 11:04:44,600 INFO L413 NwaCegarLoop]: 2663 mSDtfsCounter, 3119 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3119 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 11:04:44,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3119 Valid, 3594 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 11:04:44,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2022-10-17 11:04:44,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 3098. [2022-10-17 11:04:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 2210 states have (on average 1.290950226244344) internal successors, (2853), 2223 states have internal predecessors, (2853), 722 states have call successors, (722), 166 states have call predecessors, (722), 165 states have return successors, (722), 721 states have call predecessors, (722), 720 states have call successors, (722) [2022-10-17 11:04:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 4297 transitions. [2022-10-17 11:04:44,830 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 4297 transitions. Word has length 63 [2022-10-17 11:04:44,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:04:44,830 INFO L495 AbstractCegarLoop]: Abstraction has 3098 states and 4297 transitions. [2022-10-17 11:04:44,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 11:04:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 4297 transitions. [2022-10-17 11:04:44,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-17 11:04:44,833 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:04:44,833 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:44,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 11:04:45,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 11:04:45,049 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:04:45,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:45,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1014566241, now seen corresponding path program 1 times [2022-10-17 11:04:45,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:45,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350995866] [2022-10-17 11:04:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:45,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:45,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 11:04:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:45,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 11:04:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 11:04:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:45,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-17 11:04:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:45,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:45,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350995866] [2022-10-17 11:04:45,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350995866] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:04:45,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499720874] [2022-10-17 11:04:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:45,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:04:45,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:04:45,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:04:45,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 11:04:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:46,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 11:04:46,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:04:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:46,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:04:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:46,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499720874] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:04:46,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 11:04:46,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-10-17 11:04:46,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000948151] [2022-10-17 11:04:46,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 11:04:46,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-17 11:04:46,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:46,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-17 11:04:46,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-10-17 11:04:46,720 INFO L87 Difference]: Start difference. First operand 3098 states and 4297 transitions. Second operand has 25 states, 25 states have (on average 3.68) internal successors, (92), 25 states have internal predecessors, (92), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-17 11:04:47,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:04:47,056 INFO L93 Difference]: Finished difference Result 6196 states and 8605 transitions. [2022-10-17 11:04:47,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-17 11:04:47,057 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 25 states have internal predecessors, (92), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 67 [2022-10-17 11:04:47,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:04:47,082 INFO L225 Difference]: With dead ends: 6196 [2022-10-17 11:04:47,083 INFO L226 Difference]: Without dead ends: 3122 [2022-10-17 11:04:47,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-10-17 11:04:47,096 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 22 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 4544 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:04:47,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 4544 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:04:47,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2022-10-17 11:04:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3122. [2022-10-17 11:04:47,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3122 states, 2234 states have (on average 1.2878245299910474) internal successors, (2877), 2247 states have internal predecessors, (2877), 722 states have call successors, (722), 166 states have call predecessors, (722), 165 states have return successors, (722), 721 states have call predecessors, (722), 720 states have call successors, (722) [2022-10-17 11:04:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 4321 transitions. [2022-10-17 11:04:47,315 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 4321 transitions. Word has length 67 [2022-10-17 11:04:47,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:04:47,316 INFO L495 AbstractCegarLoop]: Abstraction has 3122 states and 4321 transitions. [2022-10-17 11:04:47,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 25 states have internal predecessors, (92), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-17 11:04:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 4321 transitions. [2022-10-17 11:04:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-17 11:04:47,319 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:04:47,319 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:47,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 11:04:47,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-17 11:04:47,545 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:04:47,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:47,545 INFO L85 PathProgramCache]: Analyzing trace with hash -722564753, now seen corresponding path program 2 times [2022-10-17 11:04:47,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:47,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306861605] [2022-10-17 11:04:47,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:47,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:48,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-17 11:04:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 11:04:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-17 11:04:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-17 11:04:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:48,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:48,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306861605] [2022-10-17 11:04:48,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306861605] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:04:48,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409712010] [2022-10-17 11:04:48,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 11:04:48,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:04:48,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:04:48,924 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:04:48,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_681cf274-7e81-493f-98d4-dbe6c1e05bce/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 11:04:49,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 11:04:49,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 11:04:49,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 11:04:49,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:04:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-10-17 11:04:49,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:04:49,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409712010] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:49,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:04:49,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [25] total 28 [2022-10-17 11:04:49,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349583745] [2022-10-17 11:04:49,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:49,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:04:49,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:49,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:04:49,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2022-10-17 11:04:49,580 INFO L87 Difference]: Start difference. First operand 3122 states and 4321 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)