./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y --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 75b979445b16a7d0cbf48464bf7b748fed9f6cd2ca88a888f2b108d83230a494 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:33:51,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:33:51,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:33:51,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:33:51,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:33:51,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:33:51,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:33:51,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:33:51,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:33:51,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:33:51,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:33:51,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:33:51,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:33:51,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:33:51,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:33:51,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:33:51,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:33:51,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:33:51,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:33:52,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:33:52,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:33:52,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:33:52,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:33:52,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:33:52,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:33:52,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:33:52,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:33:52,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:33:52,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:33:52,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:33:52,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:33:52,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:33:52,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:33:52,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:33:52,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:33:52,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:33:52,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:33:52,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:33:52,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:33:52,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:33:52,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:33:52,039 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:33:52,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:33:52,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:33:52,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:33:52,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:33:52,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:33:52,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:33:52,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:33:52,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:33:52,087 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:33:52,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:33:52,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:33:52,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:33:52,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:33:52,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:33:52,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:33:52,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:33:52,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:33:52,089 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:33:52,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:33:52,090 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:33:52,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:33:52,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:33:52,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:33:52,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:33:52,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:33:52,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:33:52,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:33:52,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:33:52,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:33:52,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:33:52,093 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:33:52,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:33:52,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:33:52,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:33:52,094 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_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b979445b16a7d0cbf48464bf7b748fed9f6cd2ca88a888f2b108d83230a494 [2021-11-13 17:33:52,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:33:52,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:33:52,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:33:52,412 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:33:52,413 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:33:52,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2021-11-13 17:33:52,479 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/data/60bf97472/3b1575375c03411b8f57b5b545bf0a2d/FLAG8eea006ec [2021-11-13 17:33:52,865 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:33:52,866 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2021-11-13 17:33:52,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/data/60bf97472/3b1575375c03411b8f57b5b545bf0a2d/FLAG8eea006ec [2021-11-13 17:33:53,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/data/60bf97472/3b1575375c03411b8f57b5b545bf0a2d [2021-11-13 17:33:53,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:33:53,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:33:53,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:33:53,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:33:53,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:33:53,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:33:53" (1/1) ... [2021-11-13 17:33:53,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb19d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:33:53, skipping insertion in model container [2021-11-13 17:33:53,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:33:53" (1/1) ... [2021-11-13 17:33:53,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:33:53,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:33:53,479 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2021-11-13 17:33:53,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:33:53,507 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:33:53,520 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2021-11-13 17:33:53,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:33:53,542 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:33:53,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:33:53 WrapperNode [2021-11-13 17:33:53,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:33:53,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:33:53,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:33:53,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:33:53,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:33:53" (1/1) ... [2021-11-13 17:33:53,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:33:53" (1/1) ... [2021-11-13 17:33:53,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:33:53,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:33:53,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:33:53,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:33:53,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:33:53" (1/1) ... [2021-11-13 17:33:53,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:33:53" (1/1) ... [2021-11-13 17:33:53,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:33:53" (1/1) ... [2021-11-13 17:33:53,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:33:53" (1/1) ... [2021-11-13 17:33:53,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:33:53" (1/1) ... [2021-11-13 17:33:53,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:33:53" (1/1) ... [2021-11-13 17:33:53,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:33:53" (1/1) ... [2021-11-13 17:33:53,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:33:53,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:33:53,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:33:53,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:33:53,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:33:53" (1/1) ... [2021-11-13 17:33:53,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:33:53,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:33:53,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:33:53,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:33:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:33:53,703 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:33:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:33:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:33:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:33:53,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:33:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 17:33:53,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 17:33:53,962 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:33:53,962 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 17:33:53,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:33:53 BoogieIcfgContainer [2021-11-13 17:33:53,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:33:53,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:33:53,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:33:53,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:33:53,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:33:53" (1/3) ... [2021-11-13 17:33:53,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76907ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:33:53, skipping insertion in model container [2021-11-13 17:33:53,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:33:53" (2/3) ... [2021-11-13 17:33:53,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76907ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:33:53, skipping insertion in model container [2021-11-13 17:33:53,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:33:53" (3/3) ... [2021-11-13 17:33:53,989 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound1.c [2021-11-13 17:33:53,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:33:53,995 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:33:54,070 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:33:54,080 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 [2021-11-13 17:33:54,080 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:33:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 17:33:54,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-13 17:33:54,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:54,105 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] [2021-11-13 17:33:54,106 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:33:54,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:54,113 INFO L85 PathProgramCache]: Analyzing trace with hash 902207739, now seen corresponding path program 1 times [2021-11-13 17:33:54,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:54,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712457199] [2021-11-13 17:33:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:54,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:33:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:33:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:33:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:33:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 17:33:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:33:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-13 17:33:54,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:54,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712457199] [2021-11-13 17:33:54,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712457199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:54,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:54,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:33:54,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941393485] [2021-11-13 17:33:54,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:54,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 17:33:54,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:54,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 17:33:54,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:33:54,518 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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) [2021-11-13 17:33:54,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:54,553 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2021-11-13 17:33:54,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 17:33:54,556 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 [2021-11-13 17:33:54,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:54,564 INFO L225 Difference]: With dead ends: 55 [2021-11-13 17:33:54,564 INFO L226 Difference]: Without dead ends: 25 [2021-11-13 17:33:54,569 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 [2021-11-13 17:33:54,577 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:54,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 17:33:54,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-13 17:33:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-13 17:33:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-13 17:33:54,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-11-13 17:33:54,625 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 39 [2021-11-13 17:33:54,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:54,626 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-11-13 17:33:54,627 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) [2021-11-13 17:33:54,628 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-11-13 17:33:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-13 17:33:54,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:54,633 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] [2021-11-13 17:33:54,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:33:54,634 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:33:54,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash -722599373, now seen corresponding path program 1 times [2021-11-13 17:33:54,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:54,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287425496] [2021-11-13 17:33:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:54,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:54,692 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:33:54,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145557783] [2021-11-13 17:33:54,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:54,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:54,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:33:54,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:33:54,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:33:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 17:33:54,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-13 17:33:55,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:33:55,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:55,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287425496] [2021-11-13 17:33:55,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:33:55,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145557783] [2021-11-13 17:33:55,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145557783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:55,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:55,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:33:55,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202074032] [2021-11-13 17:33:55,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:55,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:33:55,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:55,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:33:55,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:33:55,310 INFO L87 Difference]: Start difference. First operand 25 states and 32 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) [2021-11-13 17:33:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:55,423 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-11-13 17:33:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:33:55,424 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 [2021-11-13 17:33:55,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:55,426 INFO L225 Difference]: With dead ends: 36 [2021-11-13 17:33:55,426 INFO L226 Difference]: Without dead ends: 33 [2021-11-13 17:33:55,427 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 [2021-11-13 17:33:55,429 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.99ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.12ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:55,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 99 Invalid, 32 Unknown, 0 Unchecked, 2.99ms Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 91.12ms Time] [2021-11-13 17:33:55,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-13 17:33:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-11-13 17:33:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 17:33:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2021-11-13 17:33:55,439 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 39 [2021-11-13 17:33:55,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:55,441 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2021-11-13 17:33:55,441 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) [2021-11-13 17:33:55,441 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2021-11-13 17:33:55,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-13 17:33:55,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:55,443 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:55,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:55,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:55,663 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:33:55,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:55,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1459116230, now seen corresponding path program 1 times [2021-11-13 17:33:55,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:55,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235583128] [2021-11-13 17:33:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:55,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:55,697 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:33:55,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291009848] [2021-11-13 17:33:55,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:55,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:55,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:33:55,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:33:55,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:33:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:55,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-13 17:33:55,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-13 17:33:56,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-13 17:33:56,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:56,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235583128] [2021-11-13 17:33:56,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:33:56,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291009848] [2021-11-13 17:33:56,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291009848] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:33:56,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:33:56,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-11-13 17:33:56,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192306730] [2021-11-13 17:33:56,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:33:56,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:33:56,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:56,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:33:56,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:33:56,496 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 7 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-13 17:33:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:56,684 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2021-11-13 17:33:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:33:56,685 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 7 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) Word has length 47 [2021-11-13 17:33:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:56,687 INFO L225 Difference]: With dead ends: 46 [2021-11-13 17:33:56,688 INFO L226 Difference]: Without dead ends: 35 [2021-11-13 17:33:56,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:33:56,690 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.66ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.05ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:56,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 135 Invalid, 96 Unknown, 0 Unchecked, 4.66ms Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 114.05ms Time] [2021-11-13 17:33:56,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-13 17:33:56,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-11-13 17:33:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 17:33:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-11-13 17:33:56,699 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 47 [2021-11-13 17:33:56,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:56,700 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-11-13 17:33:56,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 7 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-13 17:33:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2021-11-13 17:33:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-13 17:33:56,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:56,702 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:56,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:56,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-13 17:33:56,916 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:33:56,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:56,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1516374532, now seen corresponding path program 1 times [2021-11-13 17:33:56,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:56,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550853577] [2021-11-13 17:33:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:56,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:56,939 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:33:56,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139720019] [2021-11-13 17:33:56,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:56,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:56,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:33:56,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:33:56,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 17:33:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:57,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 17:33:57,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-13 17:33:57,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-13 17:33:58,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:58,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550853577] [2021-11-13 17:33:58,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:33:58,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139720019] [2021-11-13 17:33:58,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139720019] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:33:58,186 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:33:58,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-11-13 17:33:58,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549119698] [2021-11-13 17:33:58,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:33:58,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 17:33:58,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 17:33:58,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:33:58,193 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 7 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2021-11-13 17:33:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:58,322 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2021-11-13 17:33:58,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:33:58,322 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 7 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 47 [2021-11-13 17:33:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:58,323 INFO L225 Difference]: With dead ends: 35 [2021-11-13 17:33:58,323 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 17:33:58,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:33:58,325 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.15ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:58,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 100 Invalid, 96 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [7 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 78.15ms Time] [2021-11-13 17:33:58,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 17:33:58,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 17:33:58,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:58,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 17:33:58,327 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2021-11-13 17:33:58,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:58,327 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 17:33:58,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 7 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2021-11-13 17:33:58,328 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 17:33:58,328 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 17:33:58,330 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 17:33:58,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:58,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:58,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-13 17:33:58,683 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-13 17:33:58,684 INFO L854 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse1 (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (and (<= .cse0 1) (<= 1 .cse1) (<= 1 .cse0) (<= .cse1 1))) [2021-11-13 17:33:58,684 INFO L854 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse1 (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (and (<= .cse0 1) (<= 1 .cse1) (<= 1 .cse0) (<= .cse1 1))) [2021-11-13 17:33:58,684 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 1) [2021-11-13 17:33:58,684 INFO L854 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) 1) (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 1)) [2021-11-13 17:33:58,684 INFO L861 garLoopResultBuilder]: At program point L56(lines 19 57) the Hoare annotation is: true [2021-11-13 17:33:58,685 INFO L861 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2021-11-13 17:33:58,685 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-11-13 17:33:58,685 INFO L858 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2021-11-13 17:33:58,685 INFO L854 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~v~0#1|) (<= .cse0 1) (<= 1 (mod |ULTIMATE.start_main_~x~0#1| 4294967296)) (<= 1 .cse0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 1))) [2021-11-13 17:33:58,685 INFO L858 garLoopResultBuilder]: For program point L38-1(lines 37 50) no Hoare annotation was computed. [2021-11-13 17:33:58,685 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-13 17:33:58,686 INFO L858 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2021-11-13 17:33:58,686 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-13 17:33:58,686 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-13 17:33:58,686 INFO L854 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (and (<= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) 1) (<= 1 .cse0) (<= .cse0 1))) [2021-11-13 17:33:58,686 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 49) no Hoare annotation was computed. [2021-11-13 17:33:58,686 INFO L854 garLoopResultBuilder]: At program point L43-2(lines 37 50) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~v~0#1|) (<= .cse0 1) (<= 1 (mod |ULTIMATE.start_main_~x~0#1| 4294967296)) (<= 1 .cse0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) 1))) [2021-11-13 17:33:58,687 INFO L854 garLoopResultBuilder]: At program point L37-2(lines 37 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~v~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) [2021-11-13 17:33:58,687 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-11-13 17:33:58,687 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-11-13 17:33:58,687 INFO L858 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-11-13 17:33:58,687 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-11-13 17:33:58,687 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-11-13 17:33:58,687 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-13 17:33:58,688 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-13 17:33:58,688 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-11-13 17:33:58,688 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-11-13 17:33:58,688 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-13 17:33:58,691 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-13 17:33:58,693 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:33:58,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 05:33:58 BoogieIcfgContainer [2021-11-13 17:33:58,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 17:33:58,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 17:33:58,707 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 17:33:58,707 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 17:33:58,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:33:53" (3/4) ... [2021-11-13 17:33:58,711 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 17:33:58,717 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-13 17:33:58,717 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-13 17:33:58,721 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-13 17:33:58,721 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-13 17:33:58,722 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-13 17:33:58,722 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 17:33:58,722 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 17:33:58,757 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 17:33:58,757 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 17:33:58,758 INFO L158 Benchmark]: Toolchain (without parser) took 5486.77ms. Allocated memory was 79.7MB in the beginning and 119.5MB in the end (delta: 39.8MB). Free memory was 43.6MB in the beginning and 72.1MB in the end (delta: -28.5MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2021-11-13 17:33:58,758 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 79.7MB. Free memory was 59.7MB in the beginning and 59.7MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:33:58,759 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.31ms. Allocated memory was 79.7MB in the beginning and 98.6MB in the end (delta: 18.9MB). Free memory was 43.4MB in the beginning and 74.3MB in the end (delta: -30.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-11-13 17:33:58,759 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.75ms. Allocated memory is still 98.6MB. Free memory was 74.1MB in the beginning and 72.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:33:58,760 INFO L158 Benchmark]: Boogie Preprocessor took 29.75ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 71.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:33:58,760 INFO L158 Benchmark]: RCFGBuilder took 343.60ms. Allocated memory is still 98.6MB. Free memory was 71.5MB in the beginning and 61.5MB in the end (delta: 10.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 17:33:58,761 INFO L158 Benchmark]: TraceAbstraction took 4724.32ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 60.8MB in the beginning and 75.3MB in the end (delta: -14.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-13 17:33:58,761 INFO L158 Benchmark]: Witness Printer took 50.06ms. Allocated memory is still 119.5MB. Free memory was 75.3MB in the beginning and 72.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:33:58,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 79.7MB. Free memory was 59.7MB in the beginning and 59.7MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.31ms. Allocated memory was 79.7MB in the beginning and 98.6MB in the end (delta: 18.9MB). Free memory was 43.4MB in the beginning and 74.3MB in the end (delta: -30.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.75ms. Allocated memory is still 98.6MB. Free memory was 74.1MB in the beginning and 72.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.75ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 71.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 343.60ms. Allocated memory is still 98.6MB. Free memory was 71.5MB in the beginning and 61.5MB in the end (delta: 10.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4724.32ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 60.8MB in the beginning and 75.3MB in the end (delta: -14.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Witness Printer took 50.06ms. Allocated memory is still 119.5MB. Free memory was 75.3MB in the beginning and 72.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 283.31ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 370 SdHoareTripleChecker+Invalid, 223.74ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 268 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 210 IncrementalHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 102 mSDtfsCounter, 210 mSolverCounterSat, 11.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 249 GetRequests, 219 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 29 PreInvPairs, 38 NumberOfFragments, 157 HoareAnnotationTreeSize, 29 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 40 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 716 SizeOfPredicates, 13 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 304/376 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((b == u && b == y) && a == v) && b % 4294967296 <= 1) && 1 <= x % 4294967296) && 1 <= b % 4294967296) && a == x) && a % 4294967296 <= 1 RESULT: Ultimate proved your program to be correct! [2021-11-13 17:33:58,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbca9ce2-5f59-4a4b-81c4-fc0be24960d4/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE