./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/modulus-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/modulus-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC --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 c8679dad194af8e09f8dc0270d50ea9ce875abb3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:28:52,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:28:52,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:28:52,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:28:52,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:28:52,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:28:52,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:28:52,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:28:52,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:28:52,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:28:52,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:28:52,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:28:52,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:28:52,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:28:52,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:28:52,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:28:52,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:28:52,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:28:52,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:28:52,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:28:52,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:28:52,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:28:52,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:28:52,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:28:52,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:28:52,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:28:52,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:28:52,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:28:52,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:28:52,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:28:52,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:28:52,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:28:52,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:28:52,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:28:52,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:28:52,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:28:52,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:28:52,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:28:52,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:28:52,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:28:52,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:28:52,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:28:52,372 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:28:52,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:28:52,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:28:52,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:28:52,374 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:28:52,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:28:52,375 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:28:52,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:28:52,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:28:52,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:28:52,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:28:52,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:28:52,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:28:52,376 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:28:52,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:28:52,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:28:52,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:28:52,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:28:52,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:28:52,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:28:52,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:28:52,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:28:52,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:28:52,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:28:52,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:28:52,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:28:52,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:28:52,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:28:52,379 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_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8679dad194af8e09f8dc0270d50ea9ce875abb3 [2021-10-11 00:28:52,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:28:52,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:28:52,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:28:52,737 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:28:52,738 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:28:52,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/bitvector/modulus-2.i [2021-10-11 00:28:52,807 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/data/919c8f3c9/57a5c80d2d4f4e7aa009a58a9115c12a/FLAG180f2956f [2021-10-11 00:28:53,276 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:28:53,276 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/sv-benchmarks/c/bitvector/modulus-2.i [2021-10-11 00:28:53,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/data/919c8f3c9/57a5c80d2d4f4e7aa009a58a9115c12a/FLAG180f2956f [2021-10-11 00:28:53,653 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/data/919c8f3c9/57a5c80d2d4f4e7aa009a58a9115c12a [2021-10-11 00:28:53,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:28:53,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:28:53,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:28:53,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:28:53,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:28:53,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:28:53" (1/1) ... [2021-10-11 00:28:53,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33581c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:53, skipping insertion in model container [2021-10-11 00:28:53,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:28:53" (1/1) ... [2021-10-11 00:28:53,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:28:53,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:28:53,855 WARN L226 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_515ac9f7-4873-43a1-b6ff-61c08ab74258/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-11 00:28:53,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:28:53,897 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:28:53,913 WARN L226 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_515ac9f7-4873-43a1-b6ff-61c08ab74258/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-11 00:28:53,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:28:53,952 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:28:53,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:53 WrapperNode [2021-10-11 00:28:53,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:28:53,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:28:53,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:28:53,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:28:53,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:53" (1/1) ... [2021-10-11 00:28:54,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:53" (1/1) ... [2021-10-11 00:28:54,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:28:54,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:28:54,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:28:54,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:28:54,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:53" (1/1) ... [2021-10-11 00:28:54,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:53" (1/1) ... [2021-10-11 00:28:54,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:53" (1/1) ... [2021-10-11 00:28:54,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:53" (1/1) ... [2021-10-11 00:28:54,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:53" (1/1) ... [2021-10-11 00:28:54,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:53" (1/1) ... [2021-10-11 00:28:54,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:53" (1/1) ... [2021-10-11 00:28:54,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:28:54,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:28:54,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:28:54,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:28:54,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:53" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:28:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:28:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:28:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:28:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:28:54,372 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:28:54,372 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 00:28:54,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:54 BoogieIcfgContainer [2021-10-11 00:28:54,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:28:54,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:28:54,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:28:54,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:28:54,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:28:53" (1/3) ... [2021-10-11 00:28:54,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ec30b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:28:54, skipping insertion in model container [2021-10-11 00:28:54,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:53" (2/3) ... [2021-10-11 00:28:54,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ec30b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:28:54, skipping insertion in model container [2021-10-11 00:28:54,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:54" (3/3) ... [2021-10-11 00:28:54,403 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2021-10-11 00:28:54,434 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:28:54,437 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:28:54,464 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:28:54,504 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:28:54,504 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:28:54,505 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:28:54,505 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:28:54,505 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:28:54,505 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:28:54,505 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:28:54,505 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:28:54,572 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2021-10-11 00:28:54,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:28:54,577 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:54,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:54,578 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:28:54,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:54,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1232845228, now seen corresponding path program 1 times [2021-10-11 00:28:54,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:54,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951422253] [2021-10-11 00:28:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:54,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:54,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951422253] [2021-10-11 00:28:54,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:54,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:28:54,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881175465] [2021-10-11 00:28:54,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:28:54,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:54,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:28:54,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:28:54,743 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2021-10-11 00:28:54,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:54,760 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2021-10-11 00:28:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:28:54,762 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 00:28:54,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:54,770 INFO L225 Difference]: With dead ends: 31 [2021-10-11 00:28:54,770 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 00:28:54,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:28:54,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 00:28:54,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-11 00:28:54,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 00:28:54,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-11 00:28:54,804 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2021-10-11 00:28:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:54,805 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-11 00:28:54,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:28:54,805 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-11 00:28:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:28:54,806 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:54,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:54,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:28:54,806 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:28:54,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:54,808 INFO L82 PathProgramCache]: Analyzing trace with hash -2042191854, now seen corresponding path program 1 times [2021-10-11 00:28:54,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:54,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914319635] [2021-10-11 00:28:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:54,832 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:28:54,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143385200] [2021-10-11 00:28:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:54,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-11 00:28:54,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:55,306 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-10-11 00:28:55,431 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:28:55,558 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:28:55,647 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-10-11 00:28:55,798 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-10-11 00:28:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:55,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914319635] [2021-10-11 00:28:55,849 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:28:55,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143385200] [2021-10-11 00:28:55,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:55,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:28:55,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122039026] [2021-10-11 00:28:55,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:28:55,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:55,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:28:55,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:28:55,856 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 7 states. [2021-10-11 00:28:56,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:56,043 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-10-11 00:28:56,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:28:56,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-10-11 00:28:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:56,046 INFO L225 Difference]: With dead ends: 23 [2021-10-11 00:28:56,046 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 00:28:56,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:28:56,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 00:28:56,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-10-11 00:28:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 00:28:56,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-10-11 00:28:56,056 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2021-10-11 00:28:56,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:56,056 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-11 00:28:56,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:28:56,057 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-10-11 00:28:56,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:28:56,059 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:56,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:56,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 00:28:56,285 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:28:56,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:56,286 INFO L82 PathProgramCache]: Analyzing trace with hash -2042132272, now seen corresponding path program 1 times [2021-10-11 00:28:56,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:56,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592541627] [2021-10-11 00:28:56,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:56,308 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:28:56,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936102314] [2021-10-11 00:28:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:56,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-11 00:28:56,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:56,549 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-10-11 00:28:56,562 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-10-11 00:28:56,631 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:28:56,713 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-10-11 00:28:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:56,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592541627] [2021-10-11 00:28:56,750 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:28:56,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936102314] [2021-10-11 00:28:56,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:56,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:28:56,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932455322] [2021-10-11 00:28:56,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:28:56,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:56,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:28:56,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:28:56,754 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 7 states. [2021-10-11 00:28:56,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:56,877 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-10-11 00:28:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:28:56,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-10-11 00:28:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:56,879 INFO L225 Difference]: With dead ends: 19 [2021-10-11 00:28:56,879 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 00:28:56,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:28:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 00:28:56,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 00:28:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 00:28:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-11 00:28:56,884 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2021-10-11 00:28:56,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:56,884 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-11 00:28:56,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:28:56,885 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-11 00:28:56,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:28:56,885 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:56,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:57,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:57,101 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:28:57,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:57,102 INFO L82 PathProgramCache]: Analyzing trace with hash 387361989, now seen corresponding path program 1 times [2021-10-11 00:28:57,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:57,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229956994] [2021-10-11 00:28:57,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:57,124 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:28:57,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466313617] [2021-10-11 00:28:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:28:57,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229956994] [2021-10-11 00:28:57,250 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:28:57,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466313617] [2021-10-11 00:28:57,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:57,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:28:57,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92551840] [2021-10-11 00:28:57,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:28:57,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:57,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:28:57,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:28:57,255 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2021-10-11 00:28:57,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:57,300 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-10-11 00:28:57,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:28:57,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 00:28:57,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:57,302 INFO L225 Difference]: With dead ends: 23 [2021-10-11 00:28:57,303 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 00:28:57,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:28:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 00:28:57,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 00:28:57,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 00:28:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-11 00:28:57,310 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 13 [2021-10-11 00:28:57,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:57,311 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-11 00:28:57,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:28:57,311 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-11 00:28:57,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:28:57,313 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:57,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:57,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:57,541 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:28:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:57,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1988806915, now seen corresponding path program 1 times [2021-10-11 00:28:57,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:57,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342014445] [2021-10-11 00:28:57,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:57,565 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:28:57,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117583353] [2021-10-11 00:28:57,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-11 00:28:57,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:57,711 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:28:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 00:28:57,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342014445] [2021-10-11 00:28:57,728 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:28:57,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117583353] [2021-10-11 00:28:57,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:57,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:28:57,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24867592] [2021-10-11 00:28:57,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:28:57,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:57,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:28:57,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:28:57,734 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 7 states. [2021-10-11 00:28:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:57,863 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-11 00:28:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:28:57,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2021-10-11 00:28:57,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:57,868 INFO L225 Difference]: With dead ends: 19 [2021-10-11 00:28:57,868 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 00:28:57,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:28:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 00:28:57,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 00:28:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 00:28:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-11 00:28:57,875 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 14 [2021-10-11 00:28:57,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:57,876 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-11 00:28:57,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:28:57,876 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-11 00:28:57,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:28:57,877 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:57,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:58,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:58,086 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:28:58,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:58,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1988866497, now seen corresponding path program 1 times [2021-10-11 00:28:58,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:58,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533258998] [2021-10-11 00:28:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:58,097 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:28:58,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935720452] [2021-10-11 00:28:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:58,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 00:28:58,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:58,378 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-10-11 00:28:58,442 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-10-11 00:28:58,521 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-10-11 00:28:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 00:28:58,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533258998] [2021-10-11 00:28:58,589 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:28:58,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935720452] [2021-10-11 00:28:58,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:58,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 00:28:58,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401556795] [2021-10-11 00:28:58,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 00:28:58,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:58,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:28:58,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:28:58,591 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 9 states. [2021-10-11 00:28:58,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:58,748 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-10-11 00:28:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:28:58,748 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2021-10-11 00:28:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:58,749 INFO L225 Difference]: With dead ends: 15 [2021-10-11 00:28:58,749 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:28:58,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:28:58,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:28:58,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:28:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:28:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:28:58,750 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-11 00:28:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:58,761 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:28:58,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 00:28:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:28:58,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:28:58,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-11 00:28:58,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:28:59,023 INFO L258 CegarLoopResult]: At program point L48-2(lines 48 51) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~d~0 4294967296))) (and (< 0 .cse0) (or (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (< .cse0 4294967295))) [2021-10-11 00:28:59,024 INFO L262 CegarLoopResult]: For program point L48-3(lines 48 51) no Hoare annotation was computed. [2021-10-11 00:28:59,024 INFO L262 CegarLoopResult]: For program point L44(lines 44 58) no Hoare annotation was computed. [2021-10-11 00:28:59,024 INFO L265 CegarLoopResult]: At program point L44-1(lines 44 58) the Hoare annotation is: true [2021-10-11 00:28:59,024 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2021-10-11 00:28:59,024 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:28:59,024 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:28:59,024 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:28:59,025 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-11 00:28:59,025 INFO L262 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2021-10-11 00:28:59,025 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:28:59,025 INFO L262 CegarLoopResult]: For program point L54-1(lines 54 56) no Hoare annotation was computed. [2021-10-11 00:28:59,025 INFO L262 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-11 00:28:59,025 INFO L258 CegarLoopResult]: At program point L46-2(lines 46 53) the Hoare annotation is: (and (< 0 (mod ULTIMATE.start_main_~d~0 4294967296)) (or (= ULTIMATE.start_assume_abort_if_not_~cond 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~m~0)) [2021-10-11 00:28:59,025 INFO L262 CegarLoopResult]: For program point L46-3(lines 44 58) no Hoare annotation was computed. [2021-10-11 00:28:59,026 INFO L265 CegarLoopResult]: At program point L59(lines 36 60) the Hoare annotation is: true [2021-10-11 00:28:59,026 INFO L262 CegarLoopResult]: For program point L2(lines 2 4) no Hoare annotation was computed. [2021-10-11 00:28:59,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:28:59 BoogieIcfgContainer [2021-10-11 00:28:59,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:28:59,046 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:28:59,046 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:28:59,046 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:28:59,046 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:54" (3/4) ... [2021-10-11 00:28:59,050 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:28:59,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 00:28:59,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:28:59,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:28:59,059 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:28:59,093 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac9f7-4873-43a1-b6ff-61c08ab74258/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:28:59,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:28:59,095 INFO L168 Benchmark]: Toolchain (without parser) took 5437.38 ms. Allocated memory was 98.6 MB in the beginning and 165.7 MB in the end (delta: 67.1 MB). Free memory was 60.5 MB in the beginning and 134.0 MB in the end (delta: -73.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:28:59,096 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 98.6 MB. Free memory was 77.4 MB in the beginning and 77.3 MB in the end (delta: 55.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:28:59,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.47 ms. Allocated memory is still 98.6 MB. Free memory was 60.3 MB in the beginning and 50.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:59,105 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.79 ms. Allocated memory is still 127.9 MB. Free memory was 107.7 MB in the beginning and 106.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:28:59,106 INFO L168 Benchmark]: Boogie Preprocessor took 33.15 ms. Allocated memory is still 127.9 MB. Free memory was 106.4 MB in the beginning and 105.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:28:59,107 INFO L168 Benchmark]: RCFGBuilder took 305.01 ms. Allocated memory is still 127.9 MB. Free memory was 105.1 MB in the beginning and 92.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:59,108 INFO L168 Benchmark]: TraceAbstraction took 4669.12 ms. Allocated memory was 127.9 MB in the beginning and 165.7 MB in the end (delta: 37.7 MB). Free memory was 92.2 MB in the beginning and 137.1 MB in the end (delta: -44.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:28:59,111 INFO L168 Benchmark]: Witness Printer took 48.15 ms. Allocated memory is still 165.7 MB. Free memory was 137.1 MB in the beginning and 134.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:59,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 98.6 MB. Free memory was 77.4 MB in the beginning and 77.3 MB in the end (delta: 55.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.47 ms. Allocated memory is still 98.6 MB. Free memory was 60.3 MB in the beginning and 50.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.79 ms. Allocated memory is still 127.9 MB. Free memory was 107.7 MB in the beginning and 106.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.15 ms. Allocated memory is still 127.9 MB. Free memory was 106.4 MB in the beginning and 105.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 305.01 ms. Allocated memory is still 127.9 MB. Free memory was 105.1 MB in the beginning and 92.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4669.12 ms. Allocated memory was 127.9 MB in the beginning and 165.7 MB in the end (delta: 37.7 MB). Free memory was 92.2 MB in the beginning and 137.1 MB in the end (delta: -44.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 48.15 ms. Allocated memory is still 165.7 MB. Free memory was 137.1 MB in the beginning and 134.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (0 < d % 4294967296 && (cond == 0 || cond == 1)) && n == m - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (0 < d % 4294967296 && (cond == 0 || cond == 1)) && d % 4294967296 < 4294967295 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 95 SDslu, 63 SDs, 0 SdLazy, 158 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 36 HoareAnnotationTreeSize, 4 FomulaSimplifications, 52 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 3800 SizeOfPredicates, 31 NumberOfNonLiveVariables, 264 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 5/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...