./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX --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 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:48:10,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:48:10,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:48:10,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:48:10,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:48:10,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:48:10,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:48:10,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:48:10,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:48:10,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:48:10,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:48:10,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:48:10,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:48:10,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:48:10,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:48:10,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:48:10,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:48:10,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:48:10,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:48:10,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:48:10,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:48:10,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:48:10,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:48:10,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:48:10,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:48:10,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:48:10,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:48:10,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:48:10,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:48:10,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:48:10,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:48:10,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:48:10,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:48:10,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:48:10,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:48:10,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:48:10,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:48:10,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:48:10,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:48:10,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:48:10,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:48:10,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:48:10,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:48:10,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:48:10,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:48:10,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:48:10,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:48:10,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:48:10,384 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:48:10,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:48:10,385 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:48:10,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:48:10,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:48:10,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:48:10,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:48:10,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:48:10,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:48:10,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:48:10,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:48:10,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:48:10,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:48:10,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:48:10,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:48:10,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:48:10,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:48:10,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:48:10,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:48:10,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:48:10,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:48:10,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:48:10,391 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:48:10,393 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:48:10,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:48:10,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:48:10,394 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_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 [2021-11-09 10:48:10,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:48:10,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:48:10,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:48:10,809 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:48:10,811 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:48:10,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2021-11-09 10:48:10,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/data/c7613d296/891f4cecbcfd4e03b5504e6ca511a7b5/FLAGcc6fbc35d [2021-11-09 10:48:11,529 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:48:11,531 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2021-11-09 10:48:11,544 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/data/c7613d296/891f4cecbcfd4e03b5504e6ca511a7b5/FLAGcc6fbc35d [2021-11-09 10:48:11,882 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/data/c7613d296/891f4cecbcfd4e03b5504e6ca511a7b5 [2021-11-09 10:48:11,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:48:11,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:48:11,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:48:11,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:48:11,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:48:11,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:48:11" (1/1) ... [2021-11-09 10:48:11,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686cddd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11, skipping insertion in model container [2021-11-09 10:48:11,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:48:11" (1/1) ... [2021-11-09 10:48:11,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:48:11,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:48:12,115 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_1b99b855-b639-4382-b384-b9e54f3b4b6b/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2021-11-09 10:48:12,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:48:12,145 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:48:12,160 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_1b99b855-b639-4382-b384-b9e54f3b4b6b/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2021-11-09 10:48:12,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:48:12,183 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:48:12,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:12 WrapperNode [2021-11-09 10:48:12,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:48:12,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:48:12,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:48:12,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:48:12,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:12" (1/1) ... [2021-11-09 10:48:12,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:12" (1/1) ... [2021-11-09 10:48:12,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:48:12,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:48:12,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:48:12,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:48:12,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:12" (1/1) ... [2021-11-09 10:48:12,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:12" (1/1) ... [2021-11-09 10:48:12,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:12" (1/1) ... [2021-11-09 10:48:12,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:12" (1/1) ... [2021-11-09 10:48:12,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:12" (1/1) ... [2021-11-09 10:48:12,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:12" (1/1) ... [2021-11-09 10:48:12,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:12" (1/1) ... [2021-11-09 10:48:12,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:48:12,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:48:12,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:48:12,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:48:12,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:12" (1/1) ... [2021-11-09 10:48:12,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:48:12,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:12,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:48:12,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:48:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:48:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:48:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:48:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:48:12,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:48:12,700 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-11-09 10:48:12,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:48:12 BoogieIcfgContainer [2021-11-09 10:48:12,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:48:12,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:48:12,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:48:12,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:48:12,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:48:11" (1/3) ... [2021-11-09 10:48:12,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5de4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:48:12, skipping insertion in model container [2021-11-09 10:48:12,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:12" (2/3) ... [2021-11-09 10:48:12,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5de4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:48:12, skipping insertion in model container [2021-11-09 10:48:12,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:48:12" (3/3) ... [2021-11-09 10:48:12,714 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound2.c [2021-11-09 10:48:12,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:48:12,721 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-09 10:48:12,777 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:48:12,785 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 [2021-11-09 10:48:12,786 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-09 10:48:12,832 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 38 states have internal predecessors, (53), 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) [2021-11-09 10:48:12,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 10:48:12,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:12,840 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:12,841 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:12,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-11-09 10:48:12,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:12,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394635219] [2021-11-09 10:48:12,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:12,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:13,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:13,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394635219] [2021-11-09 10:48:13,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394635219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:13,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:13,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:48:13,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963644977] [2021-11-09 10:48:13,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:48:13,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:48:13,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:48:13,163 INFO L87 Difference]: Start difference. First operand has 39 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 38 states have internal predecessors, (53), 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-09 10:48:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:13,189 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2021-11-09 10:48:13,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:48:13,190 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2021-11-09 10:48:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:13,199 INFO L225 Difference]: With dead ends: 75 [2021-11-09 10:48:13,200 INFO L226 Difference]: Without dead ends: 35 [2021-11-09 10:48:13,205 INFO L786 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 [2021-11-09 10:48:13,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-09 10:48:13,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-09 10:48:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 34 states have internal predecessors, (37), 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) [2021-11-09 10:48:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-11-09 10:48:13,251 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2021-11-09 10:48:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:13,253 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-11-09 10:48:13,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-09 10:48:13,254 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-11-09 10:48:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 10:48:13,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:13,255 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:13,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:48:13,256 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:13,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:13,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-11-09 10:48:13,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:13,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160871584] [2021-11-09 10:48:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:13,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:13,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:13,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160871584] [2021-11-09 10:48:13,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160871584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:13,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:13,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:48:13,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174291660] [2021-11-09 10:48:13,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:48:13,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:13,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:48:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:48:13,359 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-09 10:48:13,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:13,435 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2021-11-09 10:48:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:48:13,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7 [2021-11-09 10:48:13,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:13,437 INFO L225 Difference]: With dead ends: 54 [2021-11-09 10:48:13,437 INFO L226 Difference]: Without dead ends: 52 [2021-11-09 10:48:13,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:48:13,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-09 10:48:13,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-11-09 10:48:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 32 states have internal predecessors, (35), 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) [2021-11-09 10:48:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-11-09 10:48:13,447 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2021-11-09 10:48:13,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:13,447 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-11-09 10:48:13,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-09 10:48:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-11-09 10:48:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 10:48:13,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:13,449 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:13,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:48:13,450 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:13,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:13,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-11-09 10:48:13,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:13,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758437198] [2021-11-09 10:48:13,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:13,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:13,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:13,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758437198] [2021-11-09 10:48:13,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758437198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:13,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:13,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:48:13,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663312003] [2021-11-09 10:48:13,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:48:13,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:48:13,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:48:13,563 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-09 10:48:13,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:13,681 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-11-09 10:48:13,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:48:13,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2021-11-09 10:48:13,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:13,685 INFO L225 Difference]: With dead ends: 52 [2021-11-09 10:48:13,685 INFO L226 Difference]: Without dead ends: 50 [2021-11-09 10:48:13,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:48:13,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-09 10:48:13,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2021-11-09 10:48:13,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 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) [2021-11-09 10:48:13,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-11-09 10:48:13,694 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2021-11-09 10:48:13,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:13,694 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-11-09 10:48:13,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-09 10:48:13,695 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-11-09 10:48:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-09 10:48:13,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:13,696 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:13,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:48:13,697 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:13,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-11-09 10:48:13,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:13,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361505900] [2021-11-09 10:48:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:13,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:13,715 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:48:13,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808720209] [2021-11-09 10:48:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:13,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:13,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:13,718 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:13,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 10:48:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:13,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:48:13,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:14,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:14,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361505900] [2021-11-09 10:48:14,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:48:14,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808720209] [2021-11-09 10:48:14,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808720209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:14,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:14,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:48:14,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994221803] [2021-11-09 10:48:14,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:48:14,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:14,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:48:14,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:48:14,077 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-09 10:48:14,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:14,218 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-11-09 10:48:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:48:14,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 11 [2021-11-09 10:48:14,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:14,221 INFO L225 Difference]: With dead ends: 72 [2021-11-09 10:48:14,221 INFO L226 Difference]: Without dead ends: 50 [2021-11-09 10:48:14,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:48:14,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-09 10:48:14,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-11-09 10:48:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.225) internal successors, (49), 44 states have internal predecessors, (49), 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) [2021-11-09 10:48:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-11-09 10:48:14,250 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2021-11-09 10:48:14,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:14,250 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-11-09 10:48:14,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-09 10:48:14,251 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-11-09 10:48:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 10:48:14,252 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:14,252 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:14,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:14,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:14,470 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:14,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:14,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1783857492, now seen corresponding path program 1 times [2021-11-09 10:48:14,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:14,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835681947] [2021-11-09 10:48:14,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:14,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:14,486 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:48:14,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447651686] [2021-11-09 10:48:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:14,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:14,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:14,488 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:14,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 10:48:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:14,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:48:14,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:14,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:14,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835681947] [2021-11-09 10:48:14,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:48:14,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447651686] [2021-11-09 10:48:14,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447651686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:14,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:14,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:48:14,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089206467] [2021-11-09 10:48:14,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:48:14,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:48:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:48:14,721 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-09 10:48:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:14,787 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2021-11-09 10:48:14,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:48:14,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) Word has length 14 [2021-11-09 10:48:14,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:14,789 INFO L225 Difference]: With dead ends: 63 [2021-11-09 10:48:14,789 INFO L226 Difference]: Without dead ends: 52 [2021-11-09 10:48:14,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:48:14,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-09 10:48:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-11-09 10:48:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 45 states have internal predecessors, (51), 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) [2021-11-09 10:48:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-11-09 10:48:14,819 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2021-11-09 10:48:14,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:14,820 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-11-09 10:48:14,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-09 10:48:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-11-09 10:48:14,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-09 10:48:14,821 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:14,821 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:14,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:15,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:15,034 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:15,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:15,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2021-11-09 10:48:15,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:15,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584788829] [2021-11-09 10:48:15,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:15,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:15,055 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:48:15,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488785007] [2021-11-09 10:48:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:15,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:15,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:15,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:15,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 10:48:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:15,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 10:48:15,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:15,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:15,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584788829] [2021-11-09 10:48:15,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:48:15,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488785007] [2021-11-09 10:48:15,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488785007] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:15,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:48:15,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 10:48:15,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949828135] [2021-11-09 10:48:15,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:48:15,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:48:15,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:48:15,384 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-09 10:48:15,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:15,529 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2021-11-09 10:48:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:48:15,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) Word has length 18 [2021-11-09 10:48:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:15,534 INFO L225 Difference]: With dead ends: 108 [2021-11-09 10:48:15,534 INFO L226 Difference]: Without dead ends: 71 [2021-11-09 10:48:15,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:48:15,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-09 10:48:15,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2021-11-09 10:48:15,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 65 states have internal predecessors, (73), 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) [2021-11-09 10:48:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2021-11-09 10:48:15,560 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 18 [2021-11-09 10:48:15,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:15,560 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2021-11-09 10:48:15,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-09 10:48:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2021-11-09 10:48:15,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-09 10:48:15,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:15,564 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:15,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:15,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:15,790 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:15,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:15,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 2 times [2021-11-09 10:48:15,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:15,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334870852] [2021-11-09 10:48:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:15,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:15,805 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:48:15,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652066704] [2021-11-09 10:48:15,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:48:15,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:15,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:15,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:15,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 10:48:15,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:48:15,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:48:15,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 10:48:15,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:16,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:16,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334870852] [2021-11-09 10:48:16,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:48:16,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652066704] [2021-11-09 10:48:16,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652066704] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:16,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:48:16,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 10:48:16,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991189296] [2021-11-09 10:48:16,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:48:16,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:16,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:48:16,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:48:16,330 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-11-09 10:48:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:16,538 INFO L93 Difference]: Finished difference Result 142 states and 167 transitions. [2021-11-09 10:48:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:48:16,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) Word has length 25 [2021-11-09 10:48:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:16,541 INFO L225 Difference]: With dead ends: 142 [2021-11-09 10:48:16,543 INFO L226 Difference]: Without dead ends: 105 [2021-11-09 10:48:16,544 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:48:16,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-09 10:48:16,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2021-11-09 10:48:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.2) internal successors, (96), 84 states have internal predecessors, (96), 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) [2021-11-09 10:48:16,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2021-11-09 10:48:16,565 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 25 [2021-11-09 10:48:16,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:16,566 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2021-11-09 10:48:16,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-11-09 10:48:16,570 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2021-11-09 10:48:16,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-09 10:48:16,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:16,571 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:16,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:16,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-09 10:48:16,790 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:16,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:16,790 INFO L85 PathProgramCache]: Analyzing trace with hash 115055918, now seen corresponding path program 1 times [2021-11-09 10:48:16,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:16,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342542867] [2021-11-09 10:48:16,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:16,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:16,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:48:16,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018551739] [2021-11-09 10:48:16,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:16,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:16,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:16,807 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:16,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 10:48:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:16,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-09 10:48:16,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:17,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:17,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342542867] [2021-11-09 10:48:17,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:48:17,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018551739] [2021-11-09 10:48:17,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018551739] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:17,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:48:17,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 10:48:17,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148914697] [2021-11-09 10:48:17,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:48:17,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:17,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:48:17,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:48:17,496 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-11-09 10:48:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:17,650 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2021-11-09 10:48:17,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:48:17,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) Word has length 27 [2021-11-09 10:48:17,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:17,652 INFO L225 Difference]: With dead ends: 102 [2021-11-09 10:48:17,652 INFO L226 Difference]: Without dead ends: 100 [2021-11-09 10:48:17,653 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:48:17,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-09 10:48:17,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2021-11-09 10:48:17,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 92 states have internal predecessors, (104), 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) [2021-11-09 10:48:17,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2021-11-09 10:48:17,664 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 27 [2021-11-09 10:48:17,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:17,664 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2021-11-09 10:48:17,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-11-09 10:48:17,665 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2021-11-09 10:48:17,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-09 10:48:17,666 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:17,667 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:17,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:17,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:17,886 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:17,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:17,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1492250324, now seen corresponding path program 1 times [2021-11-09 10:48:17,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:17,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415229245] [2021-11-09 10:48:17,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:17,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:17,899 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:48:17,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311735414] [2021-11-09 10:48:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:17,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:17,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:17,901 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:17,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 10:48:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:18,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-09 10:48:18,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:18,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:18,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415229245] [2021-11-09 10:48:18,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:48:18,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311735414] [2021-11-09 10:48:18,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311735414] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:18,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:48:18,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 10:48:18,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432638861] [2021-11-09 10:48:18,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:48:18,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:48:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:48:18,491 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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) [2021-11-09 10:48:18,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:18,625 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2021-11-09 10:48:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:48:18,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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) Word has length 32 [2021-11-09 10:48:18,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:18,628 INFO L225 Difference]: With dead ends: 100 [2021-11-09 10:48:18,628 INFO L226 Difference]: Without dead ends: 85 [2021-11-09 10:48:18,629 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:48:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-09 10:48:18,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-11-09 10:48:18,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.1875) internal successors, (95), 84 states have internal predecessors, (95), 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) [2021-11-09 10:48:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2021-11-09 10:48:18,643 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 32 [2021-11-09 10:48:18,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:18,643 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2021-11-09 10:48:18,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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) [2021-11-09 10:48:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2021-11-09 10:48:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-09 10:48:18,651 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:18,651 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:18,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:18,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:18,868 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:18,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:18,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1670816768, now seen corresponding path program 3 times [2021-11-09 10:48:18,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:18,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707495247] [2021-11-09 10:48:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:18,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:18,880 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:48:18,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788060318] [2021-11-09 10:48:18,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:48:18,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:18,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:18,882 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:18,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 10:48:19,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:48:19,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:48:19,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 10:48:19,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-09 10:48:19,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:19,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707495247] [2021-11-09 10:48:19,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:48:19,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788060318] [2021-11-09 10:48:19,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788060318] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:19,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:48:19,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 10:48:19,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954375494] [2021-11-09 10:48:19,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:48:19,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:19,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:48:19,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:48:19,294 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-11-09 10:48:19,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:19,456 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2021-11-09 10:48:19,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:48:19,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) Word has length 32 [2021-11-09 10:48:19,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:19,459 INFO L225 Difference]: With dead ends: 96 [2021-11-09 10:48:19,459 INFO L226 Difference]: Without dead ends: 86 [2021-11-09 10:48:19,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:48:19,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-09 10:48:19,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-11-09 10:48:19,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 83 states have (on average 1.144578313253012) internal successors, (95), 85 states have internal predecessors, (95), 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) [2021-11-09 10:48:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-11-09 10:48:19,468 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 32 [2021-11-09 10:48:19,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:19,469 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-11-09 10:48:19,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-11-09 10:48:19,469 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-11-09 10:48:19,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-09 10:48:19,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:19,470 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:19,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:19,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:19,697 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:19,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:19,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1996519097, now seen corresponding path program 2 times [2021-11-09 10:48:19,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:19,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337248392] [2021-11-09 10:48:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:19,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:19,709 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:48:19,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213509506] [2021-11-09 10:48:19,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:48:19,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:19,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:19,711 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:19,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 10:48:19,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:48:19,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:48:19,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-09 10:48:19,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:20,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:20,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337248392] [2021-11-09 10:48:20,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:48:20,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213509506] [2021-11-09 10:48:20,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213509506] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:20,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:48:20,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 10:48:20,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076075970] [2021-11-09 10:48:20,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:48:20,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:20,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:48:20,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:48:20,424 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2021-11-09 10:48:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:20,619 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2021-11-09 10:48:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:48:20,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) Word has length 34 [2021-11-09 10:48:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:20,621 INFO L225 Difference]: With dead ends: 99 [2021-11-09 10:48:20,621 INFO L226 Difference]: Without dead ends: 97 [2021-11-09 10:48:20,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-09 10:48:20,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-09 10:48:20,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2021-11-09 10:48:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 85 states have (on average 1.1294117647058823) internal successors, (96), 87 states have internal predecessors, (96), 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) [2021-11-09 10:48:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2021-11-09 10:48:20,630 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 34 [2021-11-09 10:48:20,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:20,631 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2021-11-09 10:48:20,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2021-11-09 10:48:20,631 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2021-11-09 10:48:20,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-09 10:48:20,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:20,632 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:20,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:20,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-09 10:48:20,846 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:20,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:20,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1415019748, now seen corresponding path program 1 times [2021-11-09 10:48:20,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:20,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218985472] [2021-11-09 10:48:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:20,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:20,858 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:48:20,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693059089] [2021-11-09 10:48:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:20,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:20,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:20,860 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:20,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 10:48:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:21,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 10:48:21,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 10:48:21,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:21,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218985472] [2021-11-09 10:48:21,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:48:21,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693059089] [2021-11-09 10:48:21,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693059089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:21,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:21,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 10:48:21,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969571095] [2021-11-09 10:48:21,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:48:21,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:21,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:48:21,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:48:21,416 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-11-09 10:48:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:21,494 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2021-11-09 10:48:21,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:48:21,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) Word has length 40 [2021-11-09 10:48:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:21,496 INFO L225 Difference]: With dead ends: 143 [2021-11-09 10:48:21,496 INFO L226 Difference]: Without dead ends: 106 [2021-11-09 10:48:21,497 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:48:21,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-09 10:48:21,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 75. [2021-11-09 10:48:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 72 states have (on average 1.1111111111111112) internal successors, (80), 74 states have internal predecessors, (80), 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) [2021-11-09 10:48:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-11-09 10:48:21,505 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 40 [2021-11-09 10:48:21,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:21,506 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-11-09 10:48:21,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-11-09 10:48:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-11-09 10:48:21,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-09 10:48:21,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:21,507 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:21,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:21,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:21,722 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:21,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1808046758, now seen corresponding path program 3 times [2021-11-09 10:48:21,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:21,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446196902] [2021-11-09 10:48:21,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:21,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:21,747 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:48:21,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113352712] [2021-11-09 10:48:21,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:48:21,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:21,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:21,749 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:21,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 10:48:22,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-09 10:48:22,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:48:22,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-09 10:48:22,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:22,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:22,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446196902] [2021-11-09 10:48:22,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:48:22,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113352712] [2021-11-09 10:48:22,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113352712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:22,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:48:22,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 10:48:22,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907765194] [2021-11-09 10:48:22,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 10:48:22,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:22,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 10:48:22,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:48:22,536 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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) [2021-11-09 10:48:22,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:22,782 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2021-11-09 10:48:22,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:48:22,783 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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) Word has length 40 [2021-11-09 10:48:22,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:22,784 INFO L225 Difference]: With dead ends: 82 [2021-11-09 10:48:22,784 INFO L226 Difference]: Without dead ends: 46 [2021-11-09 10:48:22,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-09 10:48:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-09 10:48:22,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-09 10:48:22,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0) internal successors, (45), 45 states have internal predecessors, (45), 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) [2021-11-09 10:48:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 45 transitions. [2021-11-09 10:48:22,790 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 45 transitions. Word has length 40 [2021-11-09 10:48:22,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:22,791 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 45 transitions. [2021-11-09 10:48:22,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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) [2021-11-09 10:48:22,791 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 45 transitions. [2021-11-09 10:48:22,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-09 10:48:22,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:22,792 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:22,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:22,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-09 10:48:22,992 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 10:48:22,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:22,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1953331806, now seen corresponding path program 1 times [2021-11-09 10:48:22,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:22,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034159059] [2021-11-09 10:48:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:22,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:23,010 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:48:23,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438871683] [2021-11-09 10:48:23,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:23,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:23,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:23,011 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:23,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 10:48:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:23,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-09 10:48:23,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:48:24,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:24,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034159059] [2021-11-09 10:48:24,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:48:24,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438871683] [2021-11-09 10:48:24,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438871683] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:24,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:48:24,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-09 10:48:24,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697345999] [2021-11-09 10:48:24,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 10:48:24,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:24,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 10:48:24,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-09 10:48:24,340 INFO L87 Difference]: Start difference. First operand 46 states and 45 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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) [2021-11-09 10:48:24,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:24,664 INFO L93 Difference]: Finished difference Result 46 states and 45 transitions. [2021-11-09 10:48:24,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 10:48:24,664 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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) Word has length 45 [2021-11-09 10:48:24,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:24,665 INFO L225 Difference]: With dead ends: 46 [2021-11-09 10:48:24,665 INFO L226 Difference]: Without dead ends: 0 [2021-11-09 10:48:24,665 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-11-09 10:48:24,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-09 10:48:24,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-09 10:48:24,666 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) [2021-11-09 10:48:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-09 10:48:24,666 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-11-09 10:48:24,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:24,666 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 10:48:24,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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) [2021-11-09 10:48:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-09 10:48:24,667 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-09 10:48:24,669 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:48:24,669 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:48:24,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:48:24,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:48:24,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:48:24,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:48:24,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:48:24,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:24,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-09 10:48:24,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-09 10:48:24,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:48:24,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:48:25,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:48:25,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:48:25,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:48:25,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:48:25,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:48:25,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:48:25,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:48:26,158 INFO L860 garLoopResultBuilder]: At program point L60(lines 22 61) the Hoare annotation is: true [2021-11-09 10:48:26,158 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-09 10:48:26,158 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-11-09 10:48:26,158 INFO L857 garLoopResultBuilder]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2021-11-09 10:48:26,159 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-11-09 10:48:26,159 INFO L857 garLoopResultBuilder]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2021-11-09 10:48:26,159 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-09 10:48:26,159 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-09 10:48:26,159 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-09 10:48:26,159 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-11-09 10:48:26,160 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-09 10:48:26,160 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-09 10:48:26,160 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-09 10:48:26,160 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-11-09 10:48:26,160 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse6 (* 2 ULTIMATE.start_main_~B~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~A~0 2)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse4 (<= 0 ULTIMATE.start_main_~r~0)) (.cse5 (= ULTIMATE.start_main_~q~0 0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~d~0 2) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 .cse6)) (and .cse0 (= ULTIMATE.start_main_~p~0 4) .cse1 .cse2 (= ULTIMATE.start_main_~d~0 4) .cse3 .cse5 (= (* 2 (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0)) ULTIMATE.start_main_~d~0) (<= .cse6 ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 1) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)))) [2021-11-09 10:48:26,161 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-11-09 10:48:26,161 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse6 (* 2 ULTIMATE.start_main_~B~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~A~0 2)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse4 (<= 0 ULTIMATE.start_main_~r~0)) (.cse5 (= ULTIMATE.start_main_~q~0 0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~d~0 2) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 .cse6)) (and .cse0 (= ULTIMATE.start_main_~p~0 4) .cse1 .cse2 (= ULTIMATE.start_main_~d~0 4) .cse3 .cse5 (= (* 2 (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0)) ULTIMATE.start_main_~d~0) (<= .cse6 ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 1) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)))) [2021-11-09 10:48:26,161 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-11-09 10:48:26,161 INFO L853 garLoopResultBuilder]: At program point L15-8(line 38) the Hoare annotation is: (let ((.cse6 (* 2 ULTIMATE.start_main_~B~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~A~0 2)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse4 (<= 0 ULTIMATE.start_main_~r~0)) (.cse5 (= ULTIMATE.start_main_~q~0 0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~d~0 2) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 .cse6)) (and .cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) .cse1 (= ULTIMATE.start_main_~B~0 1) .cse2 (= ULTIMATE.start_main_~d~0 4) .cse3 .cse5 (<= .cse6 ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 1) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)))) [2021-11-09 10:48:26,161 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-11-09 10:48:26,162 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse8 (* 2 ULTIMATE.start_main_~B~0))) (let ((.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (<= ULTIMATE.start_main_~A~0 2)) (.cse1 (= ULTIMATE.start_main_~d~0 2)) (.cse10 (<= 0 ULTIMATE.start_main_~r~0)) (.cse11 (<= .cse8 ULTIMATE.start_main_~A~0)) (.cse4 (= ULTIMATE.start_main_~p~0 2)) (.cse5 (= ULTIMATE.start_main_~d~0 .cse8)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse13 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) (.cse9 (= ULTIMATE.start_main_~p~0 1)) (.cse14 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse12 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 (= ULTIMATE.start_main_~p~0 4) .cse0 .cse7 (= ULTIMATE.start_main_~d~0 4) .cse2 .cse3 (= (* 2 (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0)) ULTIMATE.start_main_~d~0) (<= .cse8 ULTIMATE.start_main_~r~0)) (and .cse6 (= ULTIMATE.start_main_~q~0 2) .cse7 .cse9 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse10 .cse11 .cse12 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0)) (and .cse6 .cse0 .cse7 .cse1 (<= .cse13 2) .cse14 .cse10 .cse11 .cse4 .cse5) (and .cse0 (= ULTIMATE.start_main_~B~0 1) .cse9 .cse2 .cse3 .cse12) (and (= ULTIMATE.start_main_~A~0 .cse13) .cse9 .cse14 (= ULTIMATE.start_main_~d~0 1) .cse12 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))))) [2021-11-09 10:48:26,162 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-11-09 10:48:26,162 INFO L853 garLoopResultBuilder]: At program point L15-14(line 48) the Hoare annotation is: (let ((.cse14 (* 2 ULTIMATE.start_main_~B~0))) (let ((.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (<= ULTIMATE.start_main_~A~0 2)) (.cse1 (= ULTIMATE.start_main_~d~0 2)) (.cse15 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) (.cse9 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse16 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse10 (<= 0 ULTIMATE.start_main_~r~0)) (.cse11 (<= .cse14 ULTIMATE.start_main_~A~0)) (.cse4 (= ULTIMATE.start_main_~p~0 2)) (.cse5 (= ULTIMATE.start_main_~d~0 .cse14)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse13 (= ULTIMATE.start_main_~B~0 1)) (.cse8 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse12 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 (= ULTIMATE.start_main_~q~0 2) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0)) (and .cse6 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) .cse7 .cse13 .cse9 (= ULTIMATE.start_main_~d~0 4) .cse2 .cse3 (<= .cse14 ULTIMATE.start_main_~r~0)) (and (= ULTIMATE.start_main_~A~0 .cse15) .cse0 .cse8 .cse16 (= ULTIMATE.start_main_~d~0 1) .cse12) (and .cse6 .cse7 .cse1 (<= .cse15 2) .cse9 .cse16 .cse10 .cse11 .cse4 .cse5) (and .cse0 .cse13 .cse8 .cse2 .cse3 .cse12)))) [2021-11-09 10:48:26,162 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-11-09 10:48:26,163 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-09 10:48:26,163 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-11-09 10:48:26,163 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-11-09 10:48:26,163 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-11-09 10:48:26,163 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-09 10:48:26,163 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-11-09 10:48:26,164 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-11-09 10:48:26,164 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-11-09 10:48:26,164 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-11-09 10:48:26,164 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-11-09 10:48:26,164 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-11-09 10:48:26,164 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-11-09 10:48:26,165 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-09 10:48:26,165 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse4 (<= 0 ULTIMATE.start_main_~r~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~A~0 2)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse5 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (* 2 ULTIMATE.start_main_~B~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~d~0 2) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 .cse6)) (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 1) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)) (and .cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) .cse1 (= ULTIMATE.start_main_~B~0 1) .cse2 (= ULTIMATE.start_main_~d~0 4) .cse3 .cse5 (<= .cse6 ULTIMATE.start_main_~r~0)))) [2021-11-09 10:48:26,165 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-09 10:48:26,168 INFO L731 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:26,170 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:48:26,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:48:26 BoogieIcfgContainer [2021-11-09 10:48:26,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:48:26,198 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:48:26,198 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:48:26,198 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:48:26,198 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:48:12" (3/4) ... [2021-11-09 10:48:26,202 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 10:48:26,214 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-09 10:48:26,214 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-09 10:48:26,215 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 10:48:26,215 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 10:48:26,299 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 10:48:26,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:48:26,301 INFO L168 Benchmark]: Toolchain (without parser) took 14413.06 ms. Allocated memory was 88.1 MB in the beginning and 136.3 MB in the end (delta: 48.2 MB). Free memory was 52.4 MB in the beginning and 104.2 MB in the end (delta: -51.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:48:26,302 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 68.5 MB in the beginning and 68.4 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:48:26,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.31 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 52.2 MB in the beginning and 87.6 MB in the end (delta: -35.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:48:26,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.52 ms. Allocated memory is still 111.1 MB. Free memory was 87.6 MB in the beginning and 85.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:48:26,304 INFO L168 Benchmark]: Boogie Preprocessor took 28.07 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 84.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:48:26,304 INFO L168 Benchmark]: RCFGBuilder took 446.02 ms. Allocated memory is still 111.1 MB. Free memory was 84.8 MB in the beginning and 74.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:48:26,304 INFO L168 Benchmark]: TraceAbstraction took 13491.61 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 73.8 MB in the beginning and 107.3 MB in the end (delta: -33.4 MB). Peak memory consumption was 71.9 MB. Max. memory is 16.1 GB. [2021-11-09 10:48:26,305 INFO L168 Benchmark]: Witness Printer took 101.82 ms. Allocated memory is still 136.3 MB. Free memory was 107.3 MB in the beginning and 104.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:48:26,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 68.5 MB in the beginning and 68.4 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.31 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 52.2 MB in the beginning and 87.6 MB in the end (delta: -35.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.52 ms. Allocated memory is still 111.1 MB. Free memory was 87.6 MB in the beginning and 85.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.07 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 84.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 446.02 ms. Allocated memory is still 111.1 MB. Free memory was 84.8 MB in the beginning and 74.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13491.61 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 73.8 MB in the beginning and 107.3 MB in the end (delta: -33.4 MB). Peak memory consumption was 71.9 MB. Max. memory is 16.1 GB. * Witness Printer took 101.82 ms. Allocated memory is still 136.3 MB. Free memory was 107.3 MB in the beginning and 104.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: 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 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 13.3s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 338 SDtfs, 444 SDslu, 634 SDs, 0 SdLazy, 1311 SolverSat, 199 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 352 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=8, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 121 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 37 NumberOfFragments, 718 HoareAnnotationTreeSize, 9 FomulaSimplifications, 1421 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 706 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 341 NumberOfCodeBlocks, 327 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 3525 SizeOfPredicates, 62 NumberOfNonLiveVariables, 1255 ConjunctsInSsa, 223 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 71/207 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 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((1 <= cond && d == 2) && A == r) && q == 0) && p == 2) && d == 2 * B) || ((((((((cond == 1 && p == 4) && 1 <= cond) && A <= 2) && d == 4) && A == r) && q == 0) && 2 * (p * -1 / -2 * B) == d) && 2 * B <= r)) || ((((((((cond == 1 && q == 2) && A <= 2) && p == 1) && 1 == cond) && 0 <= r) && 2 * B <= A) && B == d) && r < d)) || (((((((((cond == 1 && 1 <= cond) && A <= 2) && d == 2) && d + r <= 2) && q == p) && 0 <= r) && 2 * B <= A) && p == 2) && d == 2 * B)) || (((((1 <= cond && B == 1) && p == 1) && A == r) && q == 0) && B == d)) || (((((A == d + r && p == 1) && q == p) && d == 1) && B == d) && !(0 == cond)) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((B == 1 && p == 1) && B == d) && !(0 == cond) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((((((((1 <= cond && d == 2) && A == r) && q == 0) && p == 2) && d == 2 * B) || ((((((((cond == 1 && q == 2) && A <= 2) && p == 1) && 1 == cond) && 0 <= r) && 2 * B <= A) && B == d) && r < d)) || ((((((((cond == 1 && d == p * B) && A <= 2) && B == 1) && 1 == cond) && d == 4) && A == r) && q == 0) && 2 * B <= r)) || (((((A == d + r && 1 <= cond) && p == 1) && q == p) && d == 1) && B == d)) || (((((((((cond == 1 && A <= 2) && d == 2) && d + r <= 2) && 1 == cond) && q == p) && 0 <= r) && 2 * B <= A) && p == 2) && d == 2 * B)) || (((((1 <= cond && B == 1) && p == 1) && A == r) && q == 0) && B == d) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && A <= 2) && d == 2) && 1 == cond) && A == r) && 0 <= r) && q == 0) && p == 2) && d == 2 * B) || ((((((((cond == 1 && d == p * B) && A <= 2) && B == 1) && 1 == cond) && d == 4) && A == r) && q == 0) && 2 * B <= r)) || ((((((((cond == 1 && A <= 2) && p == 1) && 1 == cond) && A == r) && 0 <= r) && q == 0) && d == 1) && B == d) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && 1 <= cond) && A <= 2) && d == 2) && A == r) && 0 <= r) && q == 0) && p == 2) && d == 2 * B) || ((((((((cond == 1 && p == 4) && 1 <= cond) && A <= 2) && d == 4) && A == r) && q == 0) && 2 * (p * -1 / -2 * B) == d) && 2 * B <= r)) || ((((((((cond == 1 && 1 <= cond) && A <= 2) && p == 1) && A == r) && 0 <= r) && q == 0) && d == 1) && B == d) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && A <= 2) && d == 2) && 1 == cond) && A == r) && 0 <= r) && q == 0) && p == 2) && d == 2 * B) || (((((((cond == 1 && A <= 2) && p == 1) && A == r) && 0 <= r) && q == 0) && d == 1) && B == d)) || ((((((((cond == 1 && d == p * B) && A <= 2) && B == 1) && 1 == cond) && d == 4) && A == r) && q == 0) && 2 * B <= r) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && 1 <= cond) && A <= 2) && d == 2) && A == r) && 0 <= r) && q == 0) && p == 2) && d == 2 * B) || ((((((((cond == 1 && p == 4) && 1 <= cond) && A <= 2) && d == 4) && A == r) && q == 0) && 2 * (p * -1 / -2 * B) == d) && 2 * B <= r)) || ((((((((cond == 1 && 1 <= cond) && A <= 2) && p == 1) && A == r) && 0 <= r) && q == 0) && d == 1) && B == d) RESULT: Ultimate proved your program to be correct! [2021-11-09 10:48:26,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b99b855-b639-4382-b384-b9e54f3b4b6b/bin/uautomizer-IVEQpCNsaX/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