./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 460506a141aea77ccc3566603556d6eb3051804be1f001a5f66c36de73c2b800 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:39:42,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:39:42,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:39:42,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:39:42,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:39:42,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:39:42,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:39:42,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:39:42,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:39:42,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:39:42,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:39:42,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:39:42,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:39:42,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:39:42,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:39:42,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:39:42,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:39:42,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:39:42,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:39:42,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:39:42,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:39:42,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:39:42,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:39:42,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:39:42,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:39:42,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:39:42,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:39:42,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:39:42,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:39:42,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:39:42,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:39:42,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:39:42,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:39:42,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:39:42,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:39:42,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:39:42,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:39:42,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:39:42,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:39:42,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:39:42,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:39:42,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:39:42,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:39:42,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:39:42,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:39:42,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:39:42,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:39:42,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:39:42,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:39:42,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:39:42,329 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:39:42,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:39:42,330 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:39:42,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:39:42,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:39:42,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:39:42,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:39:42,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:39:42,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:39:42,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:39:42,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:39:42,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:39:42,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:39:42,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:39:42,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:39:42,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:39:42,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:39:42,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:39:42,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:39:42,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:39:42,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:39:42,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:39:42,335 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:39:42,336 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:39:42,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:39:42,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:39:42,336 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_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 460506a141aea77ccc3566603556d6eb3051804be1f001a5f66c36de73c2b800 [2021-11-20 06:39:42,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:39:42,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:39:42,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:39:42,770 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:39:42,771 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:39:42,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound10.c [2021-11-20 06:39:42,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/data/65f62892d/d81758e768704375a9a3ebf27a0d0300/FLAG41da5a5b6 [2021-11-20 06:39:43,462 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:39:43,463 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound10.c [2021-11-20 06:39:43,471 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/data/65f62892d/d81758e768704375a9a3ebf27a0d0300/FLAG41da5a5b6 [2021-11-20 06:39:43,830 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/data/65f62892d/d81758e768704375a9a3ebf27a0d0300 [2021-11-20 06:39:43,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:39:43,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:39:43,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:39:43,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:39:43,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:39:43,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:39:43" (1/1) ... [2021-11-20 06:39:43,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@469ff5f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:43, skipping insertion in model container [2021-11-20 06:39:43,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:39:43" (1/1) ... [2021-11-20 06:39:43,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:39:43,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:39:44,095 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_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound10.c[552,565] [2021-11-20 06:39:44,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:39:44,133 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:39:44,150 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_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound10.c[552,565] [2021-11-20 06:39:44,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:39:44,178 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:39:44,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:44 WrapperNode [2021-11-20 06:39:44,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:39:44,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:39:44,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:39:44,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:39:44,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:44" (1/1) ... [2021-11-20 06:39:44,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:44" (1/1) ... [2021-11-20 06:39:44,222 INFO L137 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2021-11-20 06:39:44,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:39:44,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:39:44,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:39:44,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:39:44,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:44" (1/1) ... [2021-11-20 06:39:44,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:44" (1/1) ... [2021-11-20 06:39:44,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:44" (1/1) ... [2021-11-20 06:39:44,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:44" (1/1) ... [2021-11-20 06:39:44,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:44" (1/1) ... [2021-11-20 06:39:44,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:44" (1/1) ... [2021-11-20 06:39:44,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:44" (1/1) ... [2021-11-20 06:39:44,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:39:44,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:39:44,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:39:44,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:39:44,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:44" (1/1) ... [2021-11-20 06:39:44,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:39:44,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:44,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:39:44,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:39:44,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:39:44,383 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 06:39:44,383 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 06:39:44,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:39:44,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:39:44,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:39:44,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:39:44,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:39:44,466 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:39:44,469 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:39:44,725 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:39:44,740 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:39:44,749 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 06:39:44,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:39:44 BoogieIcfgContainer [2021-11-20 06:39:44,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:39:44,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:39:44,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:39:44,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:39:44,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:39:43" (1/3) ... [2021-11-20 06:39:44,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e92960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:39:44, skipping insertion in model container [2021-11-20 06:39:44,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:44" (2/3) ... [2021-11-20 06:39:44,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e92960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:39:44, skipping insertion in model container [2021-11-20 06:39:44,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:39:44" (3/3) ... [2021-11-20 06:39:44,768 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1_valuebound10.c [2021-11-20 06:39:44,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:39:44,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:39:44,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:39:44,842 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:39:44,858 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:39:44,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-20 06:39:44,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 06:39:44,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:44,891 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:44,891 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:44,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:44,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1807347491, now seen corresponding path program 1 times [2021-11-20 06:39:44,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:44,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112830379] [2021-11-20 06:39:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:44,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:39:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 06:39:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:39:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 06:39:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 06:39:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-20 06:39:45,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:45,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112830379] [2021-11-20 06:39:45,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112830379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:45,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:45,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:39:45,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359514884] [2021-11-20 06:39:45,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:45,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:39:45,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:45,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:39:45,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:39:45,237 INFO L87 Difference]: Start difference. First operand has 35 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 06:39:45,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:45,266 INFO L93 Difference]: Finished difference Result 67 states and 115 transitions. [2021-11-20 06:39:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:39:45,269 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2021-11-20 06:39:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:45,277 INFO L225 Difference]: With dead ends: 67 [2021-11-20 06:39:45,277 INFO L226 Difference]: Without dead ends: 31 [2021-11-20 06:39:45,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:39:45,286 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:45,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:39:45,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-20 06:39:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-20 06:39:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-20 06:39:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-11-20 06:39:45,344 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 39 [2021-11-20 06:39:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:45,344 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-11-20 06:39:45,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 06:39:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-11-20 06:39:45,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 06:39:45,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:45,348 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:45,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:39:45,349 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:45,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:45,350 INFO L85 PathProgramCache]: Analyzing trace with hash 197197551, now seen corresponding path program 1 times [2021-11-20 06:39:45,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:45,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147084838] [2021-11-20 06:39:45,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:45,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:45,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:39:45,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674607234] [2021-11-20 06:39:45,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:45,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:45,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:45,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:45,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:39:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:39:45,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-20 06:39:45,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:39:45,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:45,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147084838] [2021-11-20 06:39:45,870 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:39:45,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674607234] [2021-11-20 06:39:45,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674607234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:45,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:45,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:39:45,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093117372] [2021-11-20 06:39:45,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:45,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:39:45,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:45,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:39:45,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:39:45,875 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 06:39:46,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:46,030 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2021-11-20 06:39:46,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:39:46,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2021-11-20 06:39:46,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:46,034 INFO L225 Difference]: With dead ends: 48 [2021-11-20 06:39:46,034 INFO L226 Difference]: Without dead ends: 46 [2021-11-20 06:39:46,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:39:46,037 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:46,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 131 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:39:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-20 06:39:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2021-11-20 06:39:46,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 06:39:46,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2021-11-20 06:39:46,057 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 39 [2021-11-20 06:39:46,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:46,058 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2021-11-20 06:39:46,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 06:39:46,059 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2021-11-20 06:39:46,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 06:39:46,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:46,062 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:46,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:46,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:46,271 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:46,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:46,272 INFO L85 PathProgramCache]: Analyzing trace with hash -857401627, now seen corresponding path program 1 times [2021-11-20 06:39:46,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:46,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914642693] [2021-11-20 06:39:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:46,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:46,332 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:39:46,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653227807] [2021-11-20 06:39:46,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:46,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:46,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:46,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:46,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1ae56d-2cf5-4178-aa27-3d45b28cb04b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process