./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 572360d878facce0c5d840a57f70fa0d65d827a5 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:21:31,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:21:31,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:21:31,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:21:31,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:21:31,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:21:31,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:21:31,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:21:31,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:21:31,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:21:31,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:21:31,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:21:31,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:21:31,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:21:31,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:21:31,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:21:31,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:21:31,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:21:31,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:21:31,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:21:31,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:21:31,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:21:31,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:21:31,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:21:31,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:21:31,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:21:31,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:21:31,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:21:31,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:21:31,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:21:31,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:21:31,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:21:31,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:21:31,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:21:31,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:21:31,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:21:31,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:21:31,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:21:31,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:21:31,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:21:31,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:21:31,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:21:31,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:21:31,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:21:31,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:21:31,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:21:31,632 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:21:31,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:21:31,633 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:21:31,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:21:31,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:21:31,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:21:31,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:21:31,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:21:31,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:21:31,635 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:21:31,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:21:31,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:21:31,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:21:31,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:21:31,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:21:31,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:21:31,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:21:31,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:21:31,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:21:31,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:21:31,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:21:31,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:21:31,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:21:31,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:21:31,639 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_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 572360d878facce0c5d840a57f70fa0d65d827a5 [2021-10-11 00:21:31,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:21:31,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:21:31,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:21:31,933 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:21:31,939 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:21:31,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2021-10-11 00:21:32,025 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/data/ecbbdff93/50e823fb2f074494bf8523254a069355/FLAG65ed53d61 [2021-10-11 00:21:32,583 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:21:32,584 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2021-10-11 00:21:32,590 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/data/ecbbdff93/50e823fb2f074494bf8523254a069355/FLAG65ed53d61 [2021-10-11 00:21:32,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/data/ecbbdff93/50e823fb2f074494bf8523254a069355 [2021-10-11 00:21:32,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:21:32,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:21:32,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:21:32,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:21:32,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:21:32,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:21:32" (1/1) ... [2021-10-11 00:21:32,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@647466e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:32, skipping insertion in model container [2021-10-11 00:21:32,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:21:32" (1/1) ... [2021-10-11 00:21:32,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:21:32,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:21:33,187 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c[520,533] [2021-10-11 00:21:33,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:21:33,214 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:21:33,227 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c[520,533] [2021-10-11 00:21:33,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:21:33,249 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:21:33,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:33 WrapperNode [2021-10-11 00:21:33,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:21:33,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:21:33,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:21:33,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:21:33,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:33" (1/1) ... [2021-10-11 00:21:33,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:33" (1/1) ... [2021-10-11 00:21:33,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:21:33,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:21:33,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:21:33,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:21:33,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:33" (1/1) ... [2021-10-11 00:21:33,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:33" (1/1) ... [2021-10-11 00:21:33,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:33" (1/1) ... [2021-10-11 00:21:33,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:33" (1/1) ... [2021-10-11 00:21:33,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:33" (1/1) ... [2021-10-11 00:21:33,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:33" (1/1) ... [2021-10-11 00:21:33,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:33" (1/1) ... [2021-10-11 00:21:33,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:21:33,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:21:33,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:21:33,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:21:33,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:33" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:21:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:21:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:21:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:21:33,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:21:33,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:21:33,626 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-11 00:21:33,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:33 BoogieIcfgContainer [2021-10-11 00:21:33,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:21:33,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:21:33,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:21:33,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:21:33,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:21:32" (1/3) ... [2021-10-11 00:21:33,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732cf14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:21:33, skipping insertion in model container [2021-10-11 00:21:33,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:33" (2/3) ... [2021-10-11 00:21:33,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732cf14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:21:33, skipping insertion in model container [2021-10-11 00:21:33,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:33" (3/3) ... [2021-10-11 00:21:33,636 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound5.c [2021-10-11 00:21:33,650 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:21:33,653 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 00:21:33,665 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 00:21:33,690 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:21:33,690 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:21:33,691 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:21:33,691 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:21:33,691 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:21:33,691 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:21:33,691 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:21:33,691 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:21:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-10-11 00:21:33,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:21:33,711 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:33,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:33,712 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:33,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:33,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-11 00:21:33,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:33,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359576146] [2021-10-11 00:21:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:33,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359576146] [2021-10-11 00:21:33,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:33,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:21:33,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111430816] [2021-10-11 00:21:33,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:21:33,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:33,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:21:33,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:21:33,932 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2021-10-11 00:21:33,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:33,964 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-10-11 00:21:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:21:33,968 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-10-11 00:21:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:33,982 INFO L225 Difference]: With dead ends: 63 [2021-10-11 00:21:33,982 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 00:21:33,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:21:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 00:21:34,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 00:21:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 00:21:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-11 00:21:34,041 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-10-11 00:21:34,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:34,042 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-11 00:21:34,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:21:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-11 00:21:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:21:34,044 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:34,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:34,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:21:34,045 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:34,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:34,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-11 00:21:34,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:34,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022458093] [2021-10-11 00:21:34,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:34,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022458093] [2021-10-11 00:21:34,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:34,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:21:34,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047733751] [2021-10-11 00:21:34,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:21:34,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:34,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:21:34,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:21:34,287 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2021-10-11 00:21:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:34,394 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-10-11 00:21:34,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:21:34,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 00:21:34,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:34,397 INFO L225 Difference]: With dead ends: 54 [2021-10-11 00:21:34,397 INFO L226 Difference]: Without dead ends: 50 [2021-10-11 00:21:34,398 INFO L677 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 [2021-10-11 00:21:34,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-11 00:21:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2021-10-11 00:21:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-10-11 00:21:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-10-11 00:21:34,408 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2021-10-11 00:21:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:34,408 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-10-11 00:21:34,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:21:34,409 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-10-11 00:21:34,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:21:34,409 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:34,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:34,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:21:34,410 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:34,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:34,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-11 00:21:34,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:34,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67187970] [2021-10-11 00:21:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:34,431 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:34,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891895220] [2021-10-11 00:21:34,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:34,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 00:21:34,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:34,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:34,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67187970] [2021-10-11 00:21:34,579 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:34,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891895220] [2021-10-11 00:21:34,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:34,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:21:34,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439143603] [2021-10-11 00:21:34,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:21:34,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:34,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:21:34,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:21:34,583 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2021-10-11 00:21:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:34,690 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-10-11 00:21:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:21:34,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-10-11 00:21:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:34,699 INFO L225 Difference]: With dead ends: 51 [2021-10-11 00:21:34,699 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 00:21:34,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:21:34,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 00:21:34,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-10-11 00:21:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-10-11 00:21:34,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-10-11 00:21:34,716 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 9 [2021-10-11 00:21:34,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:34,716 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-10-11 00:21:34,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:21:34,716 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-10-11 00:21:34,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:21:34,717 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:34,717 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:34,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 00:21:34,918 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:34,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:34,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1783845574, now seen corresponding path program 1 times [2021-10-11 00:21:34,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:34,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476103633] [2021-10-11 00:21:34,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:34,932 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:34,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467749925] [2021-10-11 00:21:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:34,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:21:34,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:35,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476103633] [2021-10-11 00:21:35,082 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:35,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467749925] [2021-10-11 00:21:35,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:35,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-11 00:21:35,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447562369] [2021-10-11 00:21:35,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:21:35,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:35,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:21:35,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:21:35,088 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2021-10-11 00:21:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:35,252 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-10-11 00:21:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:21:35,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 00:21:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:35,254 INFO L225 Difference]: With dead ends: 61 [2021-10-11 00:21:35,254 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 00:21:35,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:21:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 00:21:35,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-10-11 00:21:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-10-11 00:21:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2021-10-11 00:21:35,264 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2021-10-11 00:21:35,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:35,264 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2021-10-11 00:21:35,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:21:35,264 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2021-10-11 00:21:35,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 00:21:35,265 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:35,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:35,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:35,491 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:35,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:35,492 INFO L82 PathProgramCache]: Analyzing trace with hash -583489763, now seen corresponding path program 1 times [2021-10-11 00:21:35,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:35,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113561014] [2021-10-11 00:21:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:35,505 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:35,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090012526] [2021-10-11 00:21:35,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:35,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-11 00:21:35,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:35,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113561014] [2021-10-11 00:21:35,650 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:35,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090012526] [2021-10-11 00:21:35,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:35,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-11 00:21:35,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287967740] [2021-10-11 00:21:35,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:21:35,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:35,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:21:35,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:21:35,652 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 7 states. [2021-10-11 00:21:35,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:35,763 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-10-11 00:21:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:21:35,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-10-11 00:21:35,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:35,765 INFO L225 Difference]: With dead ends: 58 [2021-10-11 00:21:35,765 INFO L226 Difference]: Without dead ends: 44 [2021-10-11 00:21:35,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:21:35,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-11 00:21:35,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-10-11 00:21:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-10-11 00:21:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-10-11 00:21:35,772 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 16 [2021-10-11 00:21:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:35,772 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-10-11 00:21:35,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:21:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-10-11 00:21:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:21:35,773 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:35,773 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:35,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:35,999 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:36,000 INFO L82 PathProgramCache]: Analyzing trace with hash -435278385, now seen corresponding path program 2 times [2021-10-11 00:21:36,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:36,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067323895] [2021-10-11 00:21:36,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:36,014 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:36,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781835310] [2021-10-11 00:21:36,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:36,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:21:36,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:21:36,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-11 00:21:36,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:36,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067323895] [2021-10-11 00:21:36,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:36,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781835310] [2021-10-11 00:21:36,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:36,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-11 00:21:36,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909470387] [2021-10-11 00:21:36,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:21:36,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:36,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:21:36,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:21:36,167 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2021-10-11 00:21:36,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:36,328 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-10-11 00:21:36,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:21:36,329 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2021-10-11 00:21:36,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:36,330 INFO L225 Difference]: With dead ends: 68 [2021-10-11 00:21:36,330 INFO L226 Difference]: Without dead ends: 64 [2021-10-11 00:21:36,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:21:36,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-11 00:21:36,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2021-10-11 00:21:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-10-11 00:21:36,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-10-11 00:21:36,343 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2021-10-11 00:21:36,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:36,344 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-10-11 00:21:36,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:21:36,344 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-10-11 00:21:36,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:21:36,345 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:36,345 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:36,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:36,567 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:36,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:36,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1690544526, now seen corresponding path program 2 times [2021-10-11 00:21:36,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:36,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987221079] [2021-10-11 00:21:36,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:36,577 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:36,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369490492] [2021-10-11 00:21:36,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:36,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:21:36,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:21:36,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-11 00:21:36,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:36,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987221079] [2021-10-11 00:21:36,761 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:36,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369490492] [2021-10-11 00:21:36,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:36,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-11 00:21:36,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912748830] [2021-10-11 00:21:36,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:21:36,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:36,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:21:36,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:21:36,764 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 7 states. [2021-10-11 00:21:36,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:36,925 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-10-11 00:21:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:21:36,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2021-10-11 00:21:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:36,929 INFO L225 Difference]: With dead ends: 64 [2021-10-11 00:21:36,929 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 00:21:36,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:21:36,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 00:21:36,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-10-11 00:21:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-10-11 00:21:36,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2021-10-11 00:21:36,950 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 23 [2021-10-11 00:21:36,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:36,951 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2021-10-11 00:21:36,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:21:36,951 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2021-10-11 00:21:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 00:21:36,952 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:36,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:37,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-11 00:21:37,153 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:37,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:37,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 1 times [2021-10-11 00:21:37,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:37,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113333957] [2021-10-11 00:21:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:37,177 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:37,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942302061] [2021-10-11 00:21:37,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:37,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-11 00:21:37,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:37,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113333957] [2021-10-11 00:21:37,368 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:37,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942302061] [2021-10-11 00:21:37,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:37,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-11 00:21:37,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991397078] [2021-10-11 00:21:37,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:21:37,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:37,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:21:37,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:21:37,371 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 8 states. [2021-10-11 00:21:37,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:37,560 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-10-11 00:21:37,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:21:37,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-10-11 00:21:37,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:37,563 INFO L225 Difference]: With dead ends: 61 [2021-10-11 00:21:37,563 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 00:21:37,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:21:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 00:21:37,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-10-11 00:21:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-10-11 00:21:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-10-11 00:21:37,586 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 25 [2021-10-11 00:21:37,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:37,586 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-10-11 00:21:37,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:21:37,586 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-10-11 00:21:37,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-11 00:21:37,586 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:37,587 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:37,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:37,797 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:37,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:37,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1559508070, now seen corresponding path program 3 times [2021-10-11 00:21:37,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:37,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109273831] [2021-10-11 00:21:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:37,805 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:37,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434124280] [2021-10-11 00:21:37,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:37,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-11 00:21:37,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:21:37,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-11 00:21:37,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-11 00:21:37,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109273831] [2021-10-11 00:21:37,983 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:37,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434124280] [2021-10-11 00:21:37,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:37,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-11 00:21:37,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946329797] [2021-10-11 00:21:37,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:21:37,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:37,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:21:37,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:21:37,985 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 6 states. [2021-10-11 00:21:38,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:38,081 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-10-11 00:21:38,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:21:38,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2021-10-11 00:21:38,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:38,082 INFO L225 Difference]: With dead ends: 50 [2021-10-11 00:21:38,082 INFO L226 Difference]: Without dead ends: 46 [2021-10-11 00:21:38,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:21:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-11 00:21:38,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-10-11 00:21:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-10-11 00:21:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-10-11 00:21:38,088 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 28 [2021-10-11 00:21:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:38,089 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-10-11 00:21:38,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:21:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-10-11 00:21:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 00:21:38,090 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:38,090 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:38,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:38,293 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:38,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:38,294 INFO L82 PathProgramCache]: Analyzing trace with hash 256486781, now seen corresponding path program 3 times [2021-10-11 00:21:38,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:38,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455705263] [2021-10-11 00:21:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:38,319 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:38,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613666748] [2021-10-11 00:21:38,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:38,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 00:21:38,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:21:38,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-11 00:21:38,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-11 00:21:38,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455705263] [2021-10-11 00:21:38,491 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:38,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613666748] [2021-10-11 00:21:38,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:38,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-11 00:21:38,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488523090] [2021-10-11 00:21:38,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:21:38,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:38,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:21:38,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:21:38,495 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 6 states. [2021-10-11 00:21:40,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:40,680 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-10-11 00:21:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:21:40,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2021-10-11 00:21:40,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:40,681 INFO L225 Difference]: With dead ends: 46 [2021-10-11 00:21:40,681 INFO L226 Difference]: Without dead ends: 42 [2021-10-11 00:21:40,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:21:40,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-11 00:21:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-11 00:21:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-10-11 00:21:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-11 00:21:40,690 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 30 [2021-10-11 00:21:40,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:40,690 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-11 00:21:40,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:21:40,690 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-11 00:21:40,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 00:21:40,691 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:40,691 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:40,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 00:21:40,912 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:40,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:40,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1670816768, now seen corresponding path program 2 times [2021-10-11 00:21:40,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:40,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585409902] [2021-10-11 00:21:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:40,923 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:40,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070416794] [2021-10-11 00:21:40,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:40,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-11 00:21:40,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:21:40,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 00:21:40,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-11 00:21:41,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585409902] [2021-10-11 00:21:41,175 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:41,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070416794] [2021-10-11 00:21:41,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:41,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 00:21:41,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887537549] [2021-10-11 00:21:41,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:21:41,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:41,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:21:41,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:21:41,177 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 8 states. [2021-10-11 00:21:51,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:51,682 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-10-11 00:21:51,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:21:51,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2021-10-11 00:21:51,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:51,683 INFO L225 Difference]: With dead ends: 42 [2021-10-11 00:21:51,683 INFO L226 Difference]: Without dead ends: 40 [2021-10-11 00:21:51,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:21:51,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-11 00:21:51,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-11 00:21:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-10-11 00:21:51,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-10-11 00:21:51,691 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 32 [2021-10-11 00:21:51,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:51,692 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-10-11 00:21:51,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:21:51,692 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-10-11 00:21:51,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-11 00:21:51,693 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:51,693 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:51,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:51,906 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:51,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:51,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1809062816, now seen corresponding path program 1 times [2021-10-11 00:21:51,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:51,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231841159] [2021-10-11 00:21:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:51,916 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:51,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666980289] [2021-10-11 00:21:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:51,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 00:21:51,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:52,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231841159] [2021-10-11 00:21:52,140 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:52,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666980289] [2021-10-11 00:21:52,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:52,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-11 00:21:52,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71567172] [2021-10-11 00:21:52,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:21:52,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:52,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:21:52,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:21:52,153 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 7 states. [2021-10-11 00:21:52,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:52,348 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-10-11 00:21:52,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:21:52,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2021-10-11 00:21:52,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:52,349 INFO L225 Difference]: With dead ends: 40 [2021-10-11 00:21:52,349 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:21:52,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:21:52,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:21:52,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:21:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:21:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:21:52,351 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-10-11 00:21:52,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:52,351 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:21:52,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:21:52,351 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:21:52,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:21:52,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:52,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:21:52,870 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2021-10-11 00:21:53,107 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2021-10-11 00:21:53,333 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-10-11 00:21:53,538 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2021-10-11 00:21:53,540 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-11 00:21:53,540 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-11 00:21:53,541 INFO L265 CegarLoopResult]: At program point L48(lines 20 49) the Hoare annotation is: true [2021-10-11 00:21:53,541 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:21:53,541 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-11 00:21:53,541 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:21:53,541 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:21:53,541 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-11 00:21:53,542 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-11 00:21:53,542 INFO L258 CegarLoopResult]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse5 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (let ((.cse3 (= ULTIMATE.start_main_~s~0 (+ .cse5 ULTIMATE.start_main_~t~0))) (.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 5)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (<= 1 ULTIMATE.start_main_~t~0) .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (<= 3 ULTIMATE.start_main_~t~0) .cse4 (= ULTIMATE.start_main_~s~0 (+ .cse5 (* ULTIMATE.start_main_~a~0 2) 1))) (and (= (* ULTIMATE.start_main_~t~0 2) (+ ULTIMATE.start_main_~s~0 1)) .cse0 (= ULTIMATE.start_main_~a~0 2) .cse1 .cse2 .cse4 (= ULTIMATE.start_main_~s~0 9))))) [2021-10-11 00:21:53,542 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-11 00:21:53,542 INFO L262 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-11 00:21:53,542 INFO L258 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse5 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 5)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0)) (.cse3 (= ULTIMATE.start_main_~s~0 (+ .cse5 ULTIMATE.start_main_~t~0))) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 2) .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~s~0 9)) (and .cse0 (<= 1 ULTIMATE.start_main_~t~0) .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (<= 3 ULTIMATE.start_main_~t~0) .cse4 (= ULTIMATE.start_main_~s~0 (+ .cse5 (* ULTIMATE.start_main_~a~0 2) 1)))))) [2021-10-11 00:21:53,543 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-11 00:21:53,543 INFO L258 CegarLoopResult]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse4 (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 2) 1))) (.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 5)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3 .cse4) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 0) .cse3 (= ULTIMATE.start_main_~t~0 1) .cse4) (and (= (* ULTIMATE.start_main_~t~0 2) (+ ULTIMATE.start_main_~s~0 1)) .cse0 (= ULTIMATE.start_main_~a~0 2) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~s~0 9)))) [2021-10-11 00:21:53,543 INFO L262 CegarLoopResult]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-10-11 00:21:53,543 INFO L258 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~a~0 2) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4)) (= ULTIMATE.start_main_~s~0 9)) (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2021-10-11 00:21:53,543 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:21:53,544 INFO L262 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-10-11 00:21:53,544 INFO L258 CegarLoopResult]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= (* ULTIMATE.start_main_~t~0 2) (+ ULTIMATE.start_main_~s~0 1)) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2021-10-11 00:21:53,544 INFO L262 CegarLoopResult]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-10-11 00:21:53,544 INFO L265 CegarLoopResult]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-10-11 00:21:53,544 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-11 00:21:53,544 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-11 00:21:53,545 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-11 00:21:53,545 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-11 00:21:53,545 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-10-11 00:21:53,545 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-11 00:21:53,545 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-10-11 00:21:53,545 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-10-11 00:21:53,545 INFO L258 CegarLoopResult]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 2)) (.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~n~0 5)) (.cse3 (<= 0 ULTIMATE.start_main_~n~0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (= (+ .cse1 1) ULTIMATE.start_main_~t~0) .cse2 .cse3 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse4) (let ((.cse5 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (and .cse2 .cse3 (= ULTIMATE.start_main_~s~0 (+ .cse5 ULTIMATE.start_main_~t~0)) (= ULTIMATE.start_main_~t~0 1) .cse4 (= ULTIMATE.start_main_~s~0 (+ .cse5 .cse1 1)))) (and (= (* ULTIMATE.start_main_~t~0 2) (+ ULTIMATE.start_main_~s~0 1)) .cse0 (= ULTIMATE.start_main_~a~0 2) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~s~0 9)))) [2021-10-11 00:21:53,546 INFO L262 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2021-10-11 00:21:53,546 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-11 00:21:53,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:21:53 BoogieIcfgContainer [2021-10-11 00:21:53,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:21:53,570 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:21:53,570 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:21:53,571 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:21:53,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:33" (3/4) ... [2021-10-11 00:21:53,574 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:21:53,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 00:21:53,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:21:53,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:21:53,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:21:53,629 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f843682-7bc5-4bac-81b7-ab878a3d7ce1/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:21:53,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:21:53,631 INFO L168 Benchmark]: Toolchain (without parser) took 20670.92 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 98.7 MB in the beginning and 59.3 MB in the end (delta: 39.4 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:53,631 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 125.8 MB. Free memory was 79.5 MB in the beginning and 79.4 MB in the end (delta: 58.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:21:53,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.93 ms. Allocated memory is still 125.8 MB. Free memory was 98.5 MB in the beginning and 99.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:53,632 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.44 ms. Allocated memory is still 125.8 MB. Free memory was 99.6 MB in the beginning and 98.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:53,633 INFO L168 Benchmark]: Boogie Preprocessor took 26.23 ms. Allocated memory is still 125.8 MB. Free memory was 98.1 MB in the beginning and 96.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:53,634 INFO L168 Benchmark]: RCFGBuilder took 316.29 ms. Allocated memory is still 125.8 MB. Free memory was 96.7 MB in the beginning and 82.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:53,634 INFO L168 Benchmark]: TraceAbstraction took 19940.88 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 82.1 MB in the beginning and 62.5 MB in the end (delta: 19.6 MB). Peak memory consumption was 73.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:53,635 INFO L168 Benchmark]: Witness Printer took 59.28 ms. Allocated memory is still 151.0 MB. Free memory was 62.5 MB in the beginning and 59.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:21:53,638 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 125.8 MB. Free memory was 79.5 MB in the beginning and 79.4 MB in the end (delta: 58.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.93 ms. Allocated memory is still 125.8 MB. Free memory was 98.5 MB in the beginning and 99.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.44 ms. Allocated memory is still 125.8 MB. Free memory was 99.6 MB in the beginning and 98.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.23 ms. Allocated memory is still 125.8 MB. Free memory was 98.1 MB in the beginning and 96.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 316.29 ms. Allocated memory is still 125.8 MB. Free memory was 96.7 MB in the beginning and 82.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19940.88 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 82.1 MB in the beginning and 62.5 MB in the end (delta: 19.6 MB). Peak memory consumption was 73.0 MB. Max. memory is 16.1 GB. * Witness Printer took 59.28 ms. Allocated memory is still 151.0 MB. Free memory was 62.5 MB in the beginning and 59.3 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: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((((1 == cond && 1 <= t) && n <= 5) && 0 <= n) && s == 1) && s == a * a + t) && cond == 1) || (((((((1 == cond && n <= 5) && 0 <= n) && s == a * a + t) && s == t + 1) && 3 <= t) && cond == 1) && s == a * a + a * 2 + 1)) || ((((((t * 2 == s + 1 && 1 == cond) && a == 2) && n <= 5) && 0 <= n) && cond == 1) && s == 9) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((!(0 == cond) && a == 2) && s == t + 4) && s == 9) || (((a == 1 && 1 == cond) && t == 3) && s == t + 1)) || (((1 == cond && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((((1 == cond && a * 2 + 1 == t) && n <= 5) && 0 <= n) && t == 3) && s == t + 1) && cond == 1) || (((((n <= 5 && 0 <= n) && s == a * a + t) && t == 1) && cond == 1) && s == a * a + a * 2 + 1)) || ((((((t * 2 == s + 1 && 1 == cond) && a == 2) && n <= 5) && 0 <= n) && cond == 1) && s == 9) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((((1 == cond && a == 2) && n <= 5) && 0 <= n) && s == a * a + t) && cond == 1) && s == 9) || ((((((1 == cond && 1 <= t) && n <= 5) && 0 <= n) && s == 1) && s == a * a + t) && cond == 1)) || (((((((1 == cond && n <= 5) && 0 <= n) && s == a * a + t) && s == t + 1) && 3 <= t) && cond == 1) && s == a * a + a * 2 + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((a == 1 && 1 == cond) && t == 3) && s == t + 1) || ((!(0 == cond) && t * 2 == s + 1) && s == t + 4)) || (((1 == cond && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((a == 1 && 1 == cond) && n <= 5) && 0 <= n) && s == t + 1) && cond == 1) && s == a * a + a * 2 + 1) || ((((((1 == cond && n <= 5) && 0 <= n) && a == 0) && cond == 1) && t == 1) && s == a * a + a * 2 + 1)) || ((((((t * 2 == s + 1 && 1 == cond) && a == 2) && n <= 5) && 0 <= n) && cond == 1) && s == 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.8s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 220 SDtfs, 224 SDslu, 468 SDs, 0 SdLazy, 723 SolverSat, 130 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 13.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 28 NumberOfFragments, 447 HoareAnnotationTreeSize, 8 FomulaSimplifications, 484 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 534 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 251 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 239 ConstructedInterpolants, 0 QuantifiedInterpolants, 38338 SizeOfPredicates, 65 NumberOfNonLiveVariables, 904 ConjunctsInSsa, 206 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 120/192 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...