./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer --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 da6f17cd508712b1902dc201c68ce2c9a591df34 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:34:42,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:34:42,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:34:42,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:34:42,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:34:42,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:34:42,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:34:42,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:34:42,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:34:42,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:34:42,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:34:42,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:34:42,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:34:42,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:34:42,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:34:42,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:34:42,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:34:42,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:34:42,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:34:42,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:34:42,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:34:42,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:34:42,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:34:42,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:34:42,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:34:42,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:34:42,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:34:42,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:34:42,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:34:42,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:34:42,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:34:42,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:34:42,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:34:42,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:34:42,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:34:42,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:34:42,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:34:42,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:34:42,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:34:42,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:34:42,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:34:42,508 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:34:42,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:34:42,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:34:42,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:34:42,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:34:42,547 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:34:42,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:34:42,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:34:42,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:34:42,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:34:42,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:34:42,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:34:42,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:34:42,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:34:42,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:34:42,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:34:42,549 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:34:42,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:34:42,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:34:42,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:34:42,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:34:42,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:34:42,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:34:42,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:34:42,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:34:42,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:34:42,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:34:42,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:34:42,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:34:42,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:34:42,553 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-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da6f17cd508712b1902dc201c68ce2c9a591df34 [2020-11-29 23:34:42,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:34:42,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:34:42,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:34:42,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:34:42,869 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:34:42,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c [2020-11-29 23:34:42,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/data/6f0b8ead2/cc0d76c01d234f7aadcdcab12be84ddf/FLAG1885fdc64 [2020-11-29 23:34:43,343 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:34:43,343 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c [2020-11-29 23:34:43,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/data/6f0b8ead2/cc0d76c01d234f7aadcdcab12be84ddf/FLAG1885fdc64 [2020-11-29 23:34:43,755 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/data/6f0b8ead2/cc0d76c01d234f7aadcdcab12be84ddf [2020-11-29 23:34:43,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:34:43,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:34:43,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:34:43,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:34:43,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:34:43,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:34:43" (1/1) ... [2020-11-29 23:34:43,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@246a7691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:43, skipping insertion in model container [2020-11-29 23:34:43,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:34:43" (1/1) ... [2020-11-29 23:34:43,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:34:43,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:34:43,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:34:43,939 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:34:43,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:34:43,971 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:34:43,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:43 WrapperNode [2020-11-29 23:34:43,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:34:43,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:34:43,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:34:43,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:34:43,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:43" (1/1) ... [2020-11-29 23:34:43,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:43" (1/1) ... [2020-11-29 23:34:44,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:34:44,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:34:44,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:34:44,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:34:44,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:43" (1/1) ... [2020-11-29 23:34:44,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:43" (1/1) ... [2020-11-29 23:34:44,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:43" (1/1) ... [2020-11-29 23:34:44,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:43" (1/1) ... [2020-11-29 23:34:44,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:43" (1/1) ... [2020-11-29 23:34:44,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:43" (1/1) ... [2020-11-29 23:34:44,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:43" (1/1) ... [2020-11-29 23:34:44,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:34:44,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:34:44,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:34:44,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:34:44,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/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 [2020-11-29 23:34:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:34:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:34:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:34:44,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:34:44,583 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:34:44,584 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-11-29 23:34:44,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:34:44 BoogieIcfgContainer [2020-11-29 23:34:44,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:34:44,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:34:44,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:34:44,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:34:44,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:34:43" (1/3) ... [2020-11-29 23:34:44,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1202d9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:34:44, skipping insertion in model container [2020-11-29 23:34:44,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:43" (2/3) ... [2020-11-29 23:34:44,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1202d9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:34:44, skipping insertion in model container [2020-11-29 23:34:44,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:34:44" (3/3) ... [2020-11-29 23:34:44,595 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound50.c [2020-11-29 23:34:44,612 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:34:44,618 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 23:34:44,630 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 23:34:44,658 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:34:44,658 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:34:44,659 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:34:44,659 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:34:44,659 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:34:44,663 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:34:44,664 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:34:44,664 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:34:44,683 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-29 23:34:44,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:34:44,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:44,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:44,691 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:44,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:44,698 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-11-29 23:34:44,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:44,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31948353] [2020-11-29 23:34:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:44,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:44,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31948353] [2020-11-29 23:34:44,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:44,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:34:44,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141324375] [2020-11-29 23:34:44,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:34:44,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:44,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:34:44,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:34:44,914 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-11-29 23:34:44,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:44,943 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2020-11-29 23:34:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:34:44,945 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 23:34:44,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:44,967 INFO L225 Difference]: With dead ends: 83 [2020-11-29 23:34:44,967 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 23:34:44,970 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 [2020-11-29 23:34:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 23:34:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 23:34:45,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 23:34:45,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-11-29 23:34:45,018 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 11 [2020-11-29 23:34:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:45,019 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-11-29 23:34:45,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:34:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-11-29 23:34:45,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:34:45,021 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:45,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:45,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:34:45,024 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:45,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:45,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-11-29 23:34:45,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:45,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462072480] [2020-11-29 23:34:45,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:45,061 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:45,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140243675] [2020-11-29 23:34:45,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/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 [2020-11-29 23:34:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:45,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 23:34:45,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:45,299 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:34:45,299 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:45,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462072480] [2020-11-29 23:34:45,351 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:45,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140243675] [2020-11-29 23:34:45,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:45,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:34:45,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508810855] [2020-11-29 23:34:45,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:34:45,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:45,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:34:45,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:34:45,355 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 6 states. [2020-11-29 23:34:45,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:45,642 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-11-29 23:34:45,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:34:45,644 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 23:34:45,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:45,645 INFO L225 Difference]: With dead ends: 52 [2020-11-29 23:34:45,645 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 23:34:45,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:34:45,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 23:34:45,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2020-11-29 23:34:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 23:34:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-11-29 23:34:45,664 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 11 [2020-11-29 23:34:45,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:45,665 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-11-29 23:34:45,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:34:45,666 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-11-29 23:34:45,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:34:45,667 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:45,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:45,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 23:34:45,884 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:45,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:45,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1277140292, now seen corresponding path program 1 times [2020-11-29 23:34:45,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:45,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467869006] [2020-11-29 23:34:45,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:45,903 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:45,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927548773] [2020-11-29 23:34:45,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/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 [2020-11-29 23:34:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:45,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 23:34:45,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:45,973 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:34:45,973 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:46,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467869006] [2020-11-29 23:34:46,036 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:46,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927548773] [2020-11-29 23:34:46,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:46,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:34:46,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573185805] [2020-11-29 23:34:46,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:34:46,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:46,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:34:46,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:34:46,038 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 6 states. [2020-11-29 23:34:46,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:46,307 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2020-11-29 23:34:46,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:34:46,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-29 23:34:46,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:46,310 INFO L225 Difference]: With dead ends: 69 [2020-11-29 23:34:46,310 INFO L226 Difference]: Without dead ends: 61 [2020-11-29 23:34:46,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:34:46,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-29 23:34:46,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2020-11-29 23:34:46,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-29 23:34:46,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-11-29 23:34:46,331 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 13 [2020-11-29 23:34:46,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:46,332 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-11-29 23:34:46,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:34:46,332 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-11-29 23:34:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:34:46,333 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:46,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:46,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:34:46,559 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:46,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1834773734, now seen corresponding path program 1 times [2020-11-29 23:34:46,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:46,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59086430] [2020-11-29 23:34:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:46,574 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:46,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836953244] [2020-11-29 23:34:46,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/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 [2020-11-29 23:34:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:46,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:34:46,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:46,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59086430] [2020-11-29 23:34:46,707 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:46,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836953244] [2020-11-29 23:34:46,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:46,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:34:46,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103519541] [2020-11-29 23:34:46,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:34:46,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:46,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:34:46,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:34:46,709 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 4 states. [2020-11-29 23:34:46,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:46,834 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-11-29 23:34:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:34:46,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-29 23:34:46,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:46,836 INFO L225 Difference]: With dead ends: 95 [2020-11-29 23:34:46,836 INFO L226 Difference]: Without dead ends: 89 [2020-11-29 23:34:46,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:34:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-29 23:34:46,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2020-11-29 23:34:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-29 23:34:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-11-29 23:34:46,862 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 16 [2020-11-29 23:34:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:46,863 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-11-29 23:34:46,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:34:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-11-29 23:34:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 23:34:46,864 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:46,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:47,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:34:47,079 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:47,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:47,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1756992684, now seen corresponding path program 1 times [2020-11-29 23:34:47,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:47,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212716931] [2020-11-29 23:34:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:47,094 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:47,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821760935] [2020-11-29 23:34:47,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/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 [2020-11-29 23:34:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:47,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 23:34:47,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:47,182 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:34:47,182 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:47,220 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:47,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212716931] [2020-11-29 23:34:47,268 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:47,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821760935] [2020-11-29 23:34:47,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:47,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:34:47,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137601151] [2020-11-29 23:34:47,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:34:47,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:47,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:34:47,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:34:47,279 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 6 states. [2020-11-29 23:34:47,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:47,487 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-11-29 23:34:47,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:34:47,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-29 23:34:47,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:47,489 INFO L225 Difference]: With dead ends: 72 [2020-11-29 23:34:47,489 INFO L226 Difference]: Without dead ends: 70 [2020-11-29 23:34:47,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:34:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-29 23:34:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-29 23:34:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-29 23:34:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2020-11-29 23:34:47,504 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 20 [2020-11-29 23:34:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:47,504 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2020-11-29 23:34:47,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:34:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2020-11-29 23:34:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 23:34:47,505 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:47,505 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:47,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:34:47,723 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:47,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:47,724 INFO L82 PathProgramCache]: Analyzing trace with hash 746982291, now seen corresponding path program 1 times [2020-11-29 23:34:47,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:47,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594441996] [2020-11-29 23:34:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:47,739 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:47,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570658977] [2020-11-29 23:34:47,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/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 [2020-11-29 23:34:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:47,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 23:34:47,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:47,825 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:34:47,825 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:47,875 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:47,877 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:47,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594441996] [2020-11-29 23:34:47,901 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:47,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570658977] [2020-11-29 23:34:47,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:34:47,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 23:34:47,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305101931] [2020-11-29 23:34:47,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:34:47,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:47,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:34:47,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:34:47,902 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 7 states. [2020-11-29 23:34:48,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:48,322 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-11-29 23:34:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:34:48,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-29 23:34:48,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:48,325 INFO L225 Difference]: With dead ends: 123 [2020-11-29 23:34:48,325 INFO L226 Difference]: Without dead ends: 117 [2020-11-29 23:34:48,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-29 23:34:48,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-29 23:34:48,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-11-29 23:34:48,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-29 23:34:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-11-29 23:34:48,348 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 25 [2020-11-29 23:34:48,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:48,348 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-11-29 23:34:48,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:34:48,348 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-11-29 23:34:48,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 23:34:48,352 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:48,352 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:48,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 23:34:48,560 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:48,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:48,567 INFO L82 PathProgramCache]: Analyzing trace with hash 23956023, now seen corresponding path program 1 times [2020-11-29 23:34:48,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:48,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280638794] [2020-11-29 23:34:48,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:48,592 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:48,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608978286] [2020-11-29 23:34:48,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/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 [2020-11-29 23:34:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:48,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 23:34:48,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:48,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:48,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280638794] [2020-11-29 23:34:48,733 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:48,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608978286] [2020-11-29 23:34:48,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:34:48,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 23:34:48,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549589355] [2020-11-29 23:34:48,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:34:48,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:48,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:34:48,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:34:48,735 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 6 states. [2020-11-29 23:34:48,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:48,963 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2020-11-29 23:34:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:34:48,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-11-29 23:34:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:48,965 INFO L225 Difference]: With dead ends: 140 [2020-11-29 23:34:48,965 INFO L226 Difference]: Without dead ends: 132 [2020-11-29 23:34:48,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:34:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-29 23:34:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 101. [2020-11-29 23:34:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-29 23:34:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2020-11-29 23:34:48,976 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 26 [2020-11-29 23:34:48,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:48,977 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2020-11-29 23:34:48,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:34:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2020-11-29 23:34:48,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 23:34:48,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:48,978 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:49,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:34:49,200 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:49,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:49,200 INFO L82 PathProgramCache]: Analyzing trace with hash -722493562, now seen corresponding path program 2 times [2020-11-29 23:34:49,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:49,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301834376] [2020-11-29 23:34:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:49,212 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:49,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270452663] [2020-11-29 23:34:49,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/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 [2020-11-29 23:34:49,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:34:49,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:34:49,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 23:34:49,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:49,325 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:34:49,325 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:49,392 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:49,394 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:49,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301834376] [2020-11-29 23:34:49,427 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:49,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270452663] [2020-11-29 23:34:49,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:34:49,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 23:34:49,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027051780] [2020-11-29 23:34:49,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:34:49,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:49,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:34:49,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:34:49,429 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 8 states. [2020-11-29 23:34:49,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:49,990 INFO L93 Difference]: Finished difference Result 168 states and 181 transitions. [2020-11-29 23:34:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 23:34:49,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-11-29 23:34:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:49,993 INFO L225 Difference]: With dead ends: 168 [2020-11-29 23:34:49,993 INFO L226 Difference]: Without dead ends: 162 [2020-11-29 23:34:49,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-29 23:34:49,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-11-29 23:34:50,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 119. [2020-11-29 23:34:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-29 23:34:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2020-11-29 23:34:50,023 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 34 [2020-11-29 23:34:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:50,029 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2020-11-29 23:34:50,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:34:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2020-11-29 23:34:50,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 23:34:50,031 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:50,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:50,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:34:50,251 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:50,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1714844836, now seen corresponding path program 1 times [2020-11-29 23:34:50,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:50,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951643375] [2020-11-29 23:34:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:50,263 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:50,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565300954] [2020-11-29 23:34:50,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/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 [2020-11-29 23:34:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:50,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 23:34:50,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:50,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951643375] [2020-11-29 23:34:50,472 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:50,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565300954] [2020-11-29 23:34:50,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:34:50,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 23:34:50,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220894416] [2020-11-29 23:34:50,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 23:34:50,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:50,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 23:34:50,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:34:50,474 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand 9 states. [2020-11-29 23:34:50,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:50,855 INFO L93 Difference]: Finished difference Result 210 states and 234 transitions. [2020-11-29 23:34:50,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 23:34:50,856 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-11-29 23:34:50,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:50,858 INFO L225 Difference]: With dead ends: 210 [2020-11-29 23:34:50,858 INFO L226 Difference]: Without dead ends: 202 [2020-11-29 23:34:50,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-11-29 23:34:50,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-29 23:34:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 128. [2020-11-29 23:34:50,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-29 23:34:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 143 transitions. [2020-11-29 23:34:50,889 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 143 transitions. Word has length 35 [2020-11-29 23:34:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:50,889 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 143 transitions. [2020-11-29 23:34:50,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 23:34:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 143 transitions. [2020-11-29 23:34:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 23:34:50,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:50,891 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:51,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-29 23:34:51,115 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:51,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:51,116 INFO L82 PathProgramCache]: Analyzing trace with hash 810001052, now seen corresponding path program 2 times [2020-11-29 23:34:51,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:51,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485841731] [2020-11-29 23:34:51,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:51,123 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:51,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849961124] [2020-11-29 23:34:51,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/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 [2020-11-29 23:34:51,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:34:51,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:34:51,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:34:51,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:34:51,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485841731] [2020-11-29 23:34:51,233 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:51,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849961124] [2020-11-29 23:34:51,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:34:51,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:34:51,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518702737] [2020-11-29 23:34:51,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:34:51,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:51,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:34:51,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:34:51,237 INFO L87 Difference]: Start difference. First operand 128 states and 143 transitions. Second operand 5 states. [2020-11-29 23:34:51,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:34:51,342 INFO L93 Difference]: Finished difference Result 241 states and 268 transitions. [2020-11-29 23:34:51,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:34:51,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-29 23:34:51,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:34:51,345 INFO L225 Difference]: With dead ends: 241 [2020-11-29 23:34:51,345 INFO L226 Difference]: Without dead ends: 142 [2020-11-29 23:34:51,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:34:51,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-29 23:34:51,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2020-11-29 23:34:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-29 23:34:51,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2020-11-29 23:34:51,365 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 39 [2020-11-29 23:34:51,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:34:51,367 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2020-11-29 23:34:51,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:34:51,367 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2020-11-29 23:34:51,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-29 23:34:51,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:34:51,377 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:34:51,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:34:51,591 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:34:51,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:51,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1605251853, now seen corresponding path program 3 times [2020-11-29 23:34:51,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:34:51,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002288757] [2020-11-29 23:34:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:34:51,610 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:34:51,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223281573] [2020-11-29 23:34:51,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/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 [2020-11-29 23:34:51,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 23:34:51,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:34:51,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 23:34:51,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:34:51,785 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:34:51,786 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:34:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 23:34:54,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002288757] [2020-11-29 23:34:54,004 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:34:54,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223281573] [2020-11-29 23:34:54,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:34:54,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:34:54,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465029852] [2020-11-29 23:34:54,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:34:54,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:34:54,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:34:54,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2020-11-29 23:34:54,006 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand 6 states. [2020-11-29 23:35:07,255 WARN L193 SmtUtils]: Spent 10.97 s on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2020-11-29 23:35:17,415 WARN L193 SmtUtils]: Spent 10.08 s on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2020-11-29 23:35:18,479 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2020-11-29 23:36:25,475 WARN L193 SmtUtils]: Spent 50.71 s on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-11-29 23:36:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:36:33,388 INFO L93 Difference]: Finished difference Result 156 states and 167 transitions. [2020-11-29 23:36:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 23:36:33,394 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-11-29 23:36:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:36:33,396 INFO L225 Difference]: With dead ends: 156 [2020-11-29 23:36:33,396 INFO L226 Difference]: Without dead ends: 150 [2020-11-29 23:36:33,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 85.5s TimeCoverageRelationStatistics Valid=36, Invalid=48, Unknown=6, NotChecked=0, Total=90 [2020-11-29 23:36:33,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-29 23:36:33,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 87. [2020-11-29 23:36:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-29 23:36:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2020-11-29 23:36:33,410 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 43 [2020-11-29 23:36:33,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:36:33,411 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2020-11-29 23:36:33,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:36:33,411 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2020-11-29 23:36:33,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-29 23:36:33,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:36:33,412 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:36:33,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:36:33,627 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:36:33,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:36:33,628 INFO L82 PathProgramCache]: Analyzing trace with hash 119141591, now seen corresponding path program 2 times [2020-11-29 23:36:33,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:36:33,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690586214] [2020-11-29 23:36:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:36:33,645 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:36:33,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896795134] [2020-11-29 23:36:33,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:36:33,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:36:33,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:36:33,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-29 23:36:33,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:36:33,772 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 23:36:33,772 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:36:34,391 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2020-11-29 23:36:34,937 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2020-11-29 23:36:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:36:35,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690586214] [2020-11-29 23:36:35,232 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:36:35,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896795134] [2020-11-29 23:36:35,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:36:35,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-29 23:36:35,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636424143] [2020-11-29 23:36:35,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 23:36:35,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:36:35,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 23:36:35,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-29 23:36:35,237 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 13 states. [2020-11-29 23:36:37,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:36:37,792 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2020-11-29 23:36:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 23:36:37,793 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-11-29 23:36:37,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:36:37,794 INFO L225 Difference]: With dead ends: 143 [2020-11-29 23:36:37,794 INFO L226 Difference]: Without dead ends: 135 [2020-11-29 23:36:37,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-11-29 23:36:37,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-29 23:36:37,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 96. [2020-11-29 23:36:37,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-29 23:36:37,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-11-29 23:36:37,815 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 44 [2020-11-29 23:36:37,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:36:37,817 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-11-29 23:36:37,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 23:36:37,817 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-11-29 23:36:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-29 23:36:37,820 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:36:37,820 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:36:38,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-29 23:36:38,035 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:36:38,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:36:38,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1237724849, now seen corresponding path program 3 times [2020-11-29 23:36:38,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:36:38,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83613] [2020-11-29 23:36:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:36:38,046 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:36:38,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946219882] [2020-11-29 23:36:38,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:36:38,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 23:36:38,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:36:38,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 23:36:38,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:36:38,153 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:36:38,153 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:36:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 23:36:38,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83613] [2020-11-29 23:36:38,268 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:36:38,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946219882] [2020-11-29 23:36:38,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:36:38,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:36:38,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730630329] [2020-11-29 23:36:38,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:36:38,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:36:38,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:36:38,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:36:38,269 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 7 states. [2020-11-29 23:36:42,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:36:42,306 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2020-11-29 23:36:42,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 23:36:42,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-11-29 23:36:42,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:36:42,308 INFO L225 Difference]: With dead ends: 110 [2020-11-29 23:36:42,308 INFO L226 Difference]: Without dead ends: 96 [2020-11-29 23:36:42,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-29 23:36:42,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-29 23:36:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 78. [2020-11-29 23:36:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-29 23:36:42,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-11-29 23:36:42,322 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 48 [2020-11-29 23:36:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:36:42,322 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-11-29 23:36:42,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:36:42,322 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-11-29 23:36:42,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-29 23:36:42,323 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:36:42,323 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:36:42,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 23:36:42,539 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:36:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:36:42,540 INFO L82 PathProgramCache]: Analyzing trace with hash 415759876, now seen corresponding path program 4 times [2020-11-29 23:36:42,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:36:42,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867138554] [2020-11-29 23:36:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:36:42,549 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:36:42,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581361911] [2020-11-29 23:36:42,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:36:42,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 23:36:42,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:36:42,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 23:36:42,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:36:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:36:43,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867138554] [2020-11-29 23:36:43,544 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:36:43,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581361911] [2020-11-29 23:36:43,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:36:43,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 23:36:43,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912315944] [2020-11-29 23:36:43,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 23:36:43,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:36:43,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 23:36:43,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-29 23:36:43,546 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 11 states. [2020-11-29 23:36:45,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:36:45,976 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2020-11-29 23:36:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 23:36:45,976 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-11-29 23:36:45,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:36:45,977 INFO L225 Difference]: With dead ends: 133 [2020-11-29 23:36:45,978 INFO L226 Difference]: Without dead ends: 125 [2020-11-29 23:36:45,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-11-29 23:36:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-29 23:36:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 87. [2020-11-29 23:36:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-29 23:36:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-11-29 23:36:45,997 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 53 [2020-11-29 23:36:45,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:36:45,998 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-11-29 23:36:45,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 23:36:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-11-29 23:36:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-29 23:36:45,999 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:36:45,999 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:36:46,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 23:36:46,215 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:36:46,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:36:46,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1674794868, now seen corresponding path program 5 times [2020-11-29 23:36:46,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:36:46,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065628032] [2020-11-29 23:36:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:36:46,225 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:36:46,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358514224] [2020-11-29 23:36:46,225 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:36:46,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-29 23:36:46,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:36:46,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:36:46,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:36:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:36:46,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065628032] [2020-11-29 23:36:46,651 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:36:46,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358514224] [2020-11-29 23:36:46,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:36:46,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 23:36:46,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811588825] [2020-11-29 23:36:46,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:36:46,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:36:46,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:36:46,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:36:46,653 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 7 states. [2020-11-29 23:36:47,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:36:47,897 INFO L93 Difference]: Finished difference Result 159 states and 165 transitions. [2020-11-29 23:36:47,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:36:47,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-11-29 23:36:47,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:36:47,902 INFO L225 Difference]: With dead ends: 159 [2020-11-29 23:36:47,902 INFO L226 Difference]: Without dead ends: 116 [2020-11-29 23:36:47,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:36:47,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-29 23:36:47,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 106. [2020-11-29 23:36:47,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-29 23:36:47,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-11-29 23:36:47,928 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 57 [2020-11-29 23:36:47,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:36:47,928 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-11-29 23:36:47,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:36:47,928 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-11-29 23:36:47,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-29 23:36:47,929 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:36:47,929 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:36:48,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:36:48,147 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:36:48,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:36:48,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1866664073, now seen corresponding path program 6 times [2020-11-29 23:36:48,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:36:48,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474016895] [2020-11-29 23:36:48,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:36:48,154 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:36:48,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755987804] [2020-11-29 23:36:48,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:36:48,232 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-29 23:36:48,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:36:48,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 23:36:48,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:36:48,289 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:36:48,290 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:36:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-11-29 23:36:48,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474016895] [2020-11-29 23:36:48,355 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:36:48,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755987804] [2020-11-29 23:36:48,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:36:48,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 23:36:48,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521508340] [2020-11-29 23:36:48,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:36:48,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:36:48,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:36:48,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:36:48,357 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 7 states. [2020-11-29 23:36:48,832 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 23:36:48,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:36:48,964 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2020-11-29 23:36:48,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 23:36:48,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-11-29 23:36:48,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:36:48,973 INFO L225 Difference]: With dead ends: 125 [2020-11-29 23:36:48,973 INFO L226 Difference]: Without dead ends: 110 [2020-11-29 23:36:48,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-29 23:36:48,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-29 23:36:48,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 81. [2020-11-29 23:36:48,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-29 23:36:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2020-11-29 23:36:48,991 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 62 [2020-11-29 23:36:48,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:36:48,991 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2020-11-29 23:36:48,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:36:48,991 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2020-11-29 23:36:48,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-29 23:36:48,992 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:36:48,992 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:36:49,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 23:36:49,215 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:36:49,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:36:49,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1252937601, now seen corresponding path program 7 times [2020-11-29 23:36:49,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:36:49,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817199317] [2020-11-29 23:36:49,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:36:49,225 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:36:49,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985663749] [2020-11-29 23:36:49,226 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:36:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:36:49,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-29 23:36:49,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:36:50,881 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 23:36:50,882 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:36:50,882 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:36:51,479 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-29 23:36:51,884 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-11-29 23:36:52,894 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2020-11-29 23:36:53,700 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-11-29 23:36:54,713 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 23:36:57,873 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-11-29 23:36:57,875 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:36:57,876 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:37:02,573 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-11-29 23:37:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:37:02,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817199317] [2020-11-29 23:37:02,636 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:37:02,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985663749] [2020-11-29 23:37:02,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:37:02,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-29 23:37:02,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694498787] [2020-11-29 23:37:02,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 23:37:02,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:37:02,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 23:37:02,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-11-29 23:37:02,638 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 16 states. [2020-11-29 23:37:17,006 WARN L193 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-11-29 23:37:17,748 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-11-29 23:37:18,323 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-11-29 23:37:19,503 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 24 [2020-11-29 23:37:21,261 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-11-29 23:37:43,632 WARN L193 SmtUtils]: Spent 15.78 s on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-11-29 23:37:46,301 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-11-29 23:37:47,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:37:47,133 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2020-11-29 23:37:47,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 23:37:47,150 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-11-29 23:37:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:37:47,150 INFO L225 Difference]: With dead ends: 156 [2020-11-29 23:37:47,151 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:37:47,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 40.7s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2020-11-29 23:37:47,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:37:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:37:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:37:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:37:47,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2020-11-29 23:37:47,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:37:47,152 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:37:47,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 23:37:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:37:47,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:37:47,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 23:37:47,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 23:37:47,549 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 152 [2020-11-29 23:37:47,681 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 154 [2020-11-29 23:37:47,950 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 157 [2020-11-29 23:37:48,066 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 149 [2020-11-29 23:37:48,358 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 144 [2020-11-29 23:38:21,620 WARN L193 SmtUtils]: Spent 33.20 s on a formula simplification. DAG size of input: 150 DAG size of output: 45 [2020-11-29 23:38:52,890 WARN L193 SmtUtils]: Spent 31.27 s on a formula simplification. DAG size of input: 151 DAG size of output: 44 [2020-11-29 23:39:13,787 WARN L193 SmtUtils]: Spent 20.89 s on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2020-11-29 23:39:32,850 WARN L193 SmtUtils]: Spent 19.06 s on a formula simplification. DAG size of input: 150 DAG size of output: 72 [2020-11-29 23:40:18,941 WARN L193 SmtUtils]: Spent 46.09 s on a formula simplification. DAG size of input: 149 DAG size of output: 45 [2020-11-29 23:40:32,218 WARN L193 SmtUtils]: Spent 13.28 s on a formula simplification. DAG size of input: 126 DAG size of output: 46 [2020-11-29 23:41:06,131 WARN L193 SmtUtils]: Spent 33.91 s on a formula simplification. DAG size of input: 139 DAG size of output: 44 [2020-11-29 23:41:44,372 WARN L193 SmtUtils]: Spent 38.24 s on a formula simplification. DAG size of input: 129 DAG size of output: 75 [2020-11-29 23:41:44,375 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 23:41:44,375 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-29 23:41:44,375 INFO L274 CegarLoopResult]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2020-11-29 23:41:44,375 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2020-11-29 23:41:44,376 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 23:41:44,376 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 23:41:44,376 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 23:41:44,376 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 23:41:44,376 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-29 23:41:44,376 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-29 23:41:44,376 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 23:41:44,376 INFO L270 CegarLoopResult]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse8 (<= 1 ULTIMATE.start_main_~y~0)) (.cse9 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (* ULTIMATE.start_main_~y~0 2))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (or (and .cse8 (= ULTIMATE.start_main_~a~0 1) .cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse8 (= ULTIMATE.start_main_~a~0 2) .cse9 (= ULTIMATE.start_main_~b~0 .cse3))))) (let ((.cse4 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse2 (or (and .cse8 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 4)) .cse9 (= ULTIMATE.start_main_~a~0 4) .cse0) (and .cse0 .cse1))) (.cse5 (<= ULTIMATE.start_main_~x~0 50)) (.cse6 (<= 0 ULTIMATE.start_main_~x~0))) (or (and (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (or (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse1) (and (= ULTIMATE.start_main_~q~0 2) .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse3)) (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0))) .cse4) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) .cse5 .cse4 .cse6 .cse2) (and .cse5 (or (let ((.cse7 (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0))) (and (= (mod .cse7 2) 0) .cse8 (= ULTIMATE.start_main_~b~0 (* .cse7 2)) .cse9 .cse0 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (and .cse2 (= (mod ULTIMATE.start_main_~b~0 2) 0))) .cse6) (and .cse8 .cse5 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~q~0) .cse6 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse0 (= ULTIMATE.start_main_~b~0 0)))))) [2020-11-29 23:41:44,376 INFO L274 CegarLoopResult]: For program point L38-3(lines 38 62) no Hoare annotation was computed. [2020-11-29 23:41:44,376 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 23:41:44,377 INFO L270 CegarLoopResult]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~a~0 1)) (.cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse7 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse1 (<= ULTIMATE.start_main_~x~0 50)) (.cse9 (<= 0 ULTIMATE.start_main_~x~0)) (.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse8 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (* ULTIMATE.start_main_~y~0 2)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) (or (and .cse0 (= ULTIMATE.start_main_~q~0 8) .cse1 .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 8))) .cse3 .cse4 .cse5) (and (or (and .cse1 (or (and .cse0 (= ULTIMATE.start_main_~q~0 2) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse6))) (and (= ULTIMATE.start_main_~q~0 1) .cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse2 .cse3 .cse4))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 4))) (= ULTIMATE.start_main_~q~0 4))) .cse5))) (and .cse0 .cse7 .cse8 .cse1 .cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse9 .cse4 .cse5) (and .cse7 .cse1 .cse9 (or (let ((.cse10 (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0))) (and (= (mod .cse10 2) 0) .cse0 .cse8 (= ULTIMATE.start_main_~b~0 (* .cse10 2)) .cse4 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0))) (and .cse0 .cse8 (= ULTIMATE.start_main_~a~0 2) .cse3 (= ULTIMATE.start_main_~b~0 .cse6) .cse4))))) [2020-11-29 23:41:44,377 INFO L274 CegarLoopResult]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2020-11-29 23:41:44,377 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 23:41:44,377 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-29 23:41:44,377 INFO L270 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~a~0 1)) (.cse4 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse5 (<= ULTIMATE.start_main_~x~0 50)) (.cse6 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse7 (<= 0 ULTIMATE.start_main_~x~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (or (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse3) (and (= ULTIMATE.start_main_~q~0 2) .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2))) (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0))) .cse4) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) .cse0 .cse5 .cse1 .cse6 .cse4 .cse7 .cse2 .cse3) (and .cse0 .cse5 .cse6 .cse7 .cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (= (mod ULTIMATE.start_main_~b~0 2) 0)))) [2020-11-29 23:41:44,377 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-29 23:41:44,377 INFO L270 CegarLoopResult]: At program point L15-3(lines 42 43) the Hoare annotation is: (let ((.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse11 (= ULTIMATE.start_main_~a~0 1)) (.cse12 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse5 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (let ((.cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse3 (= (mod ULTIMATE.start_main_~b~0 2) 0)) (.cse1 (or (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse4 .cse11 .cse5 .cse6 .cse12) (and (= ULTIMATE.start_main_~q~0 2) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse5 .cse6 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2))) (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)))) (.cse7 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse0 (<= ULTIMATE.start_main_~x~0 50)) (.cse8 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse10 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse9 (<= 0 ULTIMATE.start_main_~x~0))) (or (and (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 (= ULTIMATE.start_main_~q~0 8) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 8))) .cse5 (<= (* 8 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse6 .cse2 .cse3) (and .cse4 .cse0 .cse5 (<= (* 4 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse6 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 4))) .cse2 .cse3 (= ULTIMATE.start_main_~q~0 4))) (<= (+ (div (+ ULTIMATE.start_main_~b~0 (- 1)) 2) 1) ULTIMATE.start_main_~y~0) (< (+ (div (+ ULTIMATE.start_main_~r~0 (- 2)) 2) 1) ULTIMATE.start_main_~y~0)) (and .cse7 .cse4 .cse0 .cse8 .cse9 .cse6 .cse2 .cse3) (and (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse1 .cse10) (and .cse7 .cse4 .cse0 .cse11 .cse8 .cse10 .cse9 .cse6 .cse12)))) [2020-11-29 23:41:44,378 INFO L274 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-11-29 23:41:44,378 INFO L270 CegarLoopResult]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse3 (<= 1 ULTIMATE.start_main_~r~0)) (.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (<= ULTIMATE.start_main_~x~0 50)) (.cse2 (<= 0 ULTIMATE.start_main_~x~0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 .cse2 (let ((.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse7 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2)) .cse6 .cse7) (let ((.cse8 (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0))) (and .cse3 (= (mod .cse8 2) 0) .cse4 (= ULTIMATE.start_main_~b~0 (* .cse8 2)) .cse5 .cse6 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse7))))) (and .cse3 .cse0 .cse4 .cse1 (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2020-11-29 23:41:44,378 INFO L274 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-11-29 23:41:44,378 INFO L270 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: (let ((.cse2 (<= 1 ULTIMATE.start_main_~r~0)) (.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (<= ULTIMATE.start_main_~x~0 50)) (.cse7 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse8 (<= 0 ULTIMATE.start_main_~x~0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 (let ((.cse5 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and .cse2 .cse3 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2)) .cse4 .cse5) (let ((.cse6 (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0))) (and .cse2 (= (mod .cse6 2) 0) .cse3 (= ULTIMATE.start_main_~b~0 (* .cse6 2)) .cse4 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse5)))) .cse7 .cse8) (and .cse2 .cse0 .cse3 .cse1 (= ULTIMATE.start_main_~a~0 1) .cse7 .cse8 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2020-11-29 23:41:44,378 INFO L274 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-11-29 23:41:44,378 INFO L270 CegarLoopResult]: At program point L15-9(lines 52 53) the Hoare annotation is: (let ((.cse3 (<= 1 ULTIMATE.start_main_~r~0)) (.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (<= ULTIMATE.start_main_~x~0 50)) (.cse5 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 0 ULTIMATE.start_main_~x~0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 .cse2 (let ((.cse7 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2)) .cse6 .cse7) (let ((.cse8 (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0))) (and .cse3 (= (mod .cse8 2) 0) .cse4 (= ULTIMATE.start_main_~b~0 (* .cse8 2)) .cse5 .cse6 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse7))))) (and .cse3 .cse0 .cse4 .cse1 (= ULTIMATE.start_main_~a~0 1) .cse5 .cse2 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2020-11-29 23:41:44,378 INFO L274 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-11-29 23:41:44,379 INFO L270 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= ULTIMATE.start_main_~x~0 50) (<= 0 ULTIMATE.start_main_~x~0) (let ((.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2)) .cse3 .cse4) (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (let ((.cse5 (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0))) (and (= (mod .cse5 2) 0) .cse0 .cse1 (= ULTIMATE.start_main_~b~0 (* .cse5 2)) .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse4))))) [2020-11-29 23:41:44,379 INFO L274 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-11-29 23:41:44,379 INFO L277 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-11-29 23:41:44,379 INFO L277 CegarLoopResult]: At program point L65(lines 22 66) the Hoare annotation is: true [2020-11-29 23:41:44,379 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 23:41:44,379 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 23:41:44,379 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-29 23:41:44,379 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-29 23:41:44,379 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-11-29 23:41:44,379 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-11-29 23:41:44,379 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-11-29 23:41:44,379 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-11-29 23:41:44,379 INFO L274 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-11-29 23:41:44,380 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 23:41:44,380 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 23:41:44,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:41:44 BoogieIcfgContainer [2020-11-29 23:41:44,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:41:44,422 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:41:44,422 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:41:44,423 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:41:44,423 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:34:44" (3/4) ... [2020-11-29 23:41:44,425 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:41:44,445 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-29 23:41:44,445 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 23:41:44,446 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:41:44,446 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:41:44,511 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_229ca425-ddc2-47c4-848f-bc936c3702fb/bin/uautomizer/witness.graphml [2020-11-29 23:41:44,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:41:44,513 INFO L168 Benchmark]: Toolchain (without parser) took 420753.60 ms. Allocated memory was 125.8 MB in the beginning and 192.9 MB in the end (delta: 67.1 MB). Free memory was 99.8 MB in the beginning and 116.6 MB in the end (delta: -16.7 MB). Peak memory consumption was 50.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:41:44,513 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:41:44,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.08 ms. Allocated memory is still 125.8 MB. Free memory was 99.5 MB in the beginning and 103.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:41:44,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.86 ms. Allocated memory is still 125.8 MB. Free memory was 103.5 MB in the beginning and 101.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:41:44,514 INFO L168 Benchmark]: Boogie Preprocessor took 24.00 ms. Allocated memory is still 125.8 MB. Free memory was 101.8 MB in the beginning and 100.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:41:44,514 INFO L168 Benchmark]: RCFGBuilder took 533.19 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 84.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:41:44,515 INFO L168 Benchmark]: TraceAbstraction took 419834.41 ms. Allocated memory was 125.8 MB in the beginning and 192.9 MB in the end (delta: 67.1 MB). Free memory was 83.4 MB in the beginning and 120.8 MB in the end (delta: -37.4 MB). Peak memory consumption was 100.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:41:44,515 INFO L168 Benchmark]: Witness Printer took 89.46 ms. Allocated memory is still 192.9 MB. Free memory was 120.8 MB in the beginning and 116.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:41:44,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 212.08 ms. Allocated memory is still 125.8 MB. Free memory was 99.5 MB in the beginning and 103.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.86 ms. Allocated memory is still 125.8 MB. Free memory was 103.5 MB in the beginning and 101.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.00 ms. Allocated memory is still 125.8 MB. Free memory was 101.8 MB in the beginning and 100.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 533.19 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 84.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 419834.41 ms. Allocated memory was 125.8 MB in the beginning and 192.9 MB in the end (delta: 67.1 MB). Free memory was 83.4 MB in the beginning and 120.8 MB in the end (delta: -37.4 MB). Peak memory consumption was 100.4 MB. Max. memory is 16.1 GB. * Witness Printer took 89.46 ms. Allocated memory is still 192.9 MB. Free memory was 120.8 MB in the beginning and 116.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((x == r + q * y && x <= 50) && 0 <= x) && ((((((1 <= r && 1 <= y) && 1 == cond) && b == y * 2) && cond == 1) && b == a * y) || (((((((1 <= r && a * -1 / -2 * y % 2 == 0) && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 == cond) && cond == 1) && a % -2 == 0) && b == a * y))) || ((((((((1 <= r && x == r + q * y) && 1 <= y) && x <= 50) && a == 1) && 1 <= cond) && 0 <= x) && cond == 1) && b == y) - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((x == r + q * y && x <= 50) && 0 <= x) && ((((((1 <= r && 1 <= y) && 1 <= cond) && b == y * 2) && cond == 1) && b == a * y) || (((((((1 <= r && a * -1 / -2 * y % 2 == 0) && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 <= cond) && cond == 1) && a % -2 == 0) && b == a * y))) || ((((((((1 <= r && x == r + q * y) && 1 <= y) && x <= 50) && a == 1) && 1 <= cond) && 0 <= x) && cond == 1) && b == y) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((x <= 50 && (((((((q == 1 && x == r + y) && 1 <= y) && a == 1) && 1 <= cond) && cond == 1) && b == y) || (((((q == 2 && 2 * r < x) && 1 <= cond) && cond == 1) && x == r + y * 2) && 2 * y <= x))) && b == a * y) && b % 2 == 0) || ((((((((1 <= y && x <= 50) && q == 8) && x == r + y * 8) && 1 <= cond) && 8 * y <= x) && cond == 1) && b == a * y) && b % 2 == 0)) || ((((((((1 <= y && x <= 50) && 1 <= cond) && 4 * y <= x) && cond == 1) && x == r + y * 4) && b == a * y) && b % 2 == 0) && q == 4)) && (b + -1) / 2 + 1 <= y) && (r + -2) / 2 + 1 < y) || (((((((x == r + q * y && 1 <= y) && x <= 50) && 1 == cond) && 0 <= x) && cond == 1) && b == a * y) && b % 2 == 0)) || ((b <= y && (((((((q == 1 && x == r + y) && 1 <= y) && a == 1) && 1 <= cond) && cond == 1) && b == y) || (((((q == 2 && 2 * r < x) && 1 <= cond) && cond == 1) && x == r + y * 2) && 2 * y <= x))) && r < y)) || ((((((((x == r + q * y && 1 <= y) && x <= 50) && a == 1) && 1 == cond) && r < y) && 0 <= x) && cond == 1) && b == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((r < 2 * b && ((((((((1 <= r && q == 8) && x <= 50) && a == 1) && x == r + y * 8) && 1 <= cond) && cond == 1) && b == y) || (((x <= 50 && ((((((1 <= r && q == 2) && a == 1) && 1 <= cond) && cond == 1) && x == r + y * 2) || (((((q == 1 && 1 <= r) && x == r + y) && a == 1) && 1 <= cond) && cond == 1))) || ((((((1 <= r && x <= 50) && a == 1) && 1 <= cond) && cond == 1) && x == r + y * 4) && q == 4)) && b == y))) || ((((((((1 <= r && x == r + q * y) && 1 <= y) && x <= 50) && a == 1) && 1 == cond) && 0 <= x) && cond == 1) && b == y)) || (((x == r + q * y && x <= 50) && 0 <= x) && ((((((a * -1 / -2 * y % 2 == 0 && 1 <= r) && 1 <= y) && b == a * -1 / -2 * y * 2) && cond == 1) && a % -2 == 0) || (((((1 <= r && 1 <= y) && a == 2) && 1 <= cond) && b == y * 2) && cond == 1))) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((x == r + q * y && x <= 50) && (((((1 <= r && 1 <= y) && b == y * 2) && cond == 1) && b == a * y) || ((((((1 <= r && a * -1 / -2 * y % 2 == 0) && 1 <= y) && b == a * -1 / -2 * y * 2) && cond == 1) && a % -2 == 0) && b == a * y))) && 1 == cond) && 0 <= x) || ((((((((1 <= r && x == r + q * y) && 1 <= y) && x <= 50) && a == 1) && 1 == cond) && 0 <= x) && cond == 1) && b == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((b <= y && (((((((q == 1 && x == r + y) && 1 <= y) && a == 1) && 1 <= cond) && cond == 1) && b == y) || (((q == 2 && cond == 1) && x == r + y * 2) && 2 * y <= x))) && r < y) || ((((((((x == r + q * y && 1 <= y) && x <= 50) && a == 1) && 1 == cond) && r < y) && 0 <= x) && cond == 1) && b == y)) || ((((((1 <= y && x <= 50) && 1 == cond) && 0 <= x) && cond == 1) && b == a * y) && b % 2 == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((x == r + q * y && x <= 50) && 0 <= x) && (((((((1 <= r && 1 <= y) && 1 == cond) && b == y * 2) && cond == 1) && b == a * y) || (((((1 <= r && 1 <= y) && a == 1) && 1 <= cond) && cond == 1) && b == y)) || (((((((a * -1 / -2 * y % 2 == 0 && 1 <= r) && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 == cond) && cond == 1) && a % -2 == 0) && b == a * y)) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((b <= y && ((((q == 1 && x == r + y) && cond == 1) && ((((1 <= y && a == 1) && 1 <= cond) && b == y) || (((1 <= y && a == 2) && 1 <= cond) && b == y * 2))) || (((q == 2 && (((((1 <= y && b == y * 4) && 1 <= cond) && a == 4) && cond == 1) || (cond == 1 && ((((1 <= y && a == 1) && 1 <= cond) && b == y) || (((1 <= y && a == 2) && 1 <= cond) && b == y * 2))))) && x == r + y * 2) && 2 * y <= x))) && r < y) || ((((x == r + q * y && x <= 50) && r < y) && 0 <= x) && (((((1 <= y && b == y * 4) && 1 <= cond) && a == 4) && cond == 1) || (cond == 1 && ((((1 <= y && a == 1) && 1 <= cond) && b == y) || (((1 <= y && a == 2) && 1 <= cond) && b == y * 2)))))) || ((x <= 50 && (((((((a * -1 / -2 * y % 2 == 0 && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 <= cond) && cond == 1) && a % -2 == 0) && b == a * y) || ((((((1 <= y && b == y * 4) && 1 <= cond) && a == 4) && cond == 1) || (cond == 1 && ((((1 <= y && a == 1) && 1 <= cond) && b == y) || (((1 <= y && a == 2) && 1 <= cond) && b == y * 2)))) && b % 2 == 0))) && 0 <= x)) || (((((((1 <= y && x <= 50) && a == q) && 0 <= x) && r == x) && q == 0) && cond == 1) && b == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 182.6s, OverallIterations: 17, TraceHistogramMax: 5, AutomataDifference: 157.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 237.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 515 SDtfs, 1201 SDslu, 1232 SDs, 0 SdLazy, 2578 SolverSat, 348 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 39.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 658 GetRequests, 492 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 132.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 416 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 86 NumberOfFragments, 1388 HoareAnnotationTreeSize, 10 FomulaSimplifications, 801725 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 217948 FormulaSimplificationTreeSizeReductionInter, 235.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 603 NumberOfCodeBlocks, 529 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 586 ConstructedInterpolants, 0 QuantifiedInterpolants, 279275 SizeOfPredicates, 125 NumberOfNonLiveVariables, 1967 ConjunctsInSsa, 297 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 207/432 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...